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Cisco IOS Voice Command Reference
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About Cisco IOS Software Documentation
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Using Cisco IOS Software
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Commands: A
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Commands: B
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Commands:cac master through call application stats
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Commands: call application voice through call-denial
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Commands: call fallback through called-number (dial-peer)
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Commands: caller-id (dial peer) through ccm-manager switchover-to-backup
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Commands: ccs connect (controller) through clear vsp statistics
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Commands: clid through cptone
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Commands: default (MGCP profile) through direct-inward-dial
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Commands: disable-early-media 180 through dualtone
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Commands: E
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Commands: F
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Commands: G
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Commands: H
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Commands: icpif through irq global-request
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Commands: isdn bind-l3 through ixi transport http
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Commands: K
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Commands: L
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Commands: map q850-cause through mgcp package-capability
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Commands: mgcp persistent through mmoip aaa send-id secondary
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Commands: mode (ATM/T1/E1 controller) through mwi-server
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Commands: N
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Commands: O
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Commands: package through pattern
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Commands: permit hostname through proxy h323
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Commands: Q
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Commands: R
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Commands: sccp through service-type call-check
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Commands: session through sgcp tse payload
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Commands: show aal2 profile through show call filter match-list
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Commands: show call history fax through show debug condition
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Commands: show dial-peer video through show gatekeeper zone status
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Commands: show gateway through show modem relay statistics
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Commands: show mrcp client session active through show sgcp statistics
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Commands: show sip service through show trunk hdlc
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Commands: show vdev through show voice statistics memory-usage
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Commands: show voice translation-profile through shutdown (voice-port)
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Commands: signal through srv version
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Commands: ss7 mtp2-variant through switchover method
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Commands: target carrier-id through threshold noise
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Commands: timeout (auto-config application) through timing clear-wait
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Commands:timing delay-duration through type (voice)
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Commands: U
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Commands: vad (dial peer) through voice class dualtone-detect-params
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Commands: voice class h323 through vxml tree memory
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Commands: W
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Commands: Z
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Feedback
Table Of Contents
voice call capacity timer interval
voice call convert-discpi-to-prog
voice call csr recording interval
voice call csr reporting interval
voice call trigger percent-change
voice-class called-number (dial peer)
voice-class called-number-pool
voice class dualtone-detect-params
Cisco IOS Voice Commands:
V
This chapter contains commands to configure and maintain Cisco IOS voice applications. The commands are presented in alphabetical order. Some commands required for configuring voice may be found in other Cisco IOS command references. Use the command reference master index or search online to find these commands.
For detailed information on how to configure these applications and features, refer to the Cisco IOS Voice Configuration Guide.
vad (dial peer)
To enable voice activity detection (VAD) for the calls using a particular dial peer, use the vad command in dial peer configuration mode. To disable VAD, use the no form of this command.
vad [aggressive]
no vad [aggressive]
Syntax Description
aggressive
Reduces noise threshold from -78 to -62 dBm. Available only when session protocol multicast is configured.
Command Default
VAD is enabled
Aggressive VAD is enabled in multicast dial peers
Command Modes
Dial peer configuration
Command History
Usage Guidelines
Use this command to enable voice activity detection. With VAD, voice data packets fall into three categories: speech, silence, and unknown. Speech and unknown packets are sent over the network; silence packets are discarded. The sound quality is slightly degraded with VAD, but the connection monopolizes much less bandwidth. If you use the no form of this command, VAD is disabled and voice data is continuously sent to the IP backbone. When configuring voice gateways to handle fax calls, VAD should be disabled at both ends of the IP network because it can interfere with the successful reception of fax traffic.
When the aggressive keyword is used, the VAD noise threshold is reduced from -78 to -62 dBm. Noise that falls below the -62 dBm threshold is considered to be silence and is not sent over the network. Additionally, unknown packets are considered to be silence and are discarded.
Examples
The following example enables VAD for a Voice over IP (VoIP) dial peer, starting from global configuration mode:
dial-peer voice 200 voipvadRelated Commands
vbd-playout-delay maximum
To enable maximum ATM adaptation layer 2 (AAL2) voice-band-detection playout-delay buffer on a Cisco router, use the vbd-playout-delay command in voice-service configuration mode. To reset to the default, use the no form of this command.
vbd-playout-delay maximum time
no vbd-playout-delay maximum
Syntax Description
Command Default
200 milliseconds
Command Modes
Voice-service configuration
Command History
12.2(8)T
This command was introduced on Cisco 2600 series and Cisco 3660 routers.
Examples
The following example sets the AAL2 voice-band-detection playout-buffer delay to a maximum of 202 milliseconds:
voice service voatm session protocol aal2vbd-playout-delay maximum 202Related Commands
voice-service
Specifies the voice encapsulation type and enters voice-service configuration mode.
vbd-playout-delay minimum
To enable minimum ATM adaptation layer 2 (AAL2) voice-band-detection playout-delay buffer on a Cisco router, use the vbd-playout-delay minimum command in voice-service configuration mode. To reset to the default, use the no form of this command.
vbd-playout-delay minimum time
no vbd-playout-delay minimum
Syntax Description
Command Default
4 milliseconds
Command Modes
Voice-service configuration
Command History
12.2(8)T
This command was introduced on Cisco 2600 series and Cisco 3660 routers.
Examples
The following example sets the AAL2 voice-band-detection playout-buffer delay to a minimum of 6 milliseconds:
voice service voatm session protocol aal2vbd-playout-delay minimum 6Related Commands
voice-service
Specifies the voice encapsulation type and enters voice-service configuration mode.
vbd-playout-delay mode
To configure voice-band-detection playout-delay adaptation mode on a Cisco router, use the vbd-playout-delay mode command in voice-service configuration mode. To disable this mode, use the no form of this command.
vbd-playout-delay mode [fixed | passthrough]
no vbd-playout-delay mode [fixed | passthrough]
Syntax Description
fixed
Sets jitter buffer to a constant delay, in milliseconds.
passthrough
Sets jitter buffer passthrough to DRAIN_FILL for clock compensation.
Command Default
Voice-band-detection playout-delay adaptation mode is disabled.
Command Modes
Voice-service configuration
Command History
12.2(8)T
This command was introduced on Cisco 2600 series and Cisco 3660 routers.
Usage Guidelines
Use this command to set the playout jitter buffer. When a voice band is detected, the call uses G.711 codec, and the playout delay values that you set are picked up. The original voice-call parameters are restored after the fax or modem call is completed.
Examples
The following example configures ATM adaptation layer 2 (AAL2) voice-band-detection playout-delay adaptation mode and sets the mode to fixed:
voice service voatmsession protocol aal2vbd-playout-delay mode fixedRelated Commands
voice-service
Specifies the voice encapsulation type and enters voice-service configuration mode.
vbd-playout-delay nominal
To enable nominal ATM adaptation layer 2 (AAL2) voice-band-detection playout-delay buffer on a Cisco router, use the vbd-playout-delay command in voice-service configuration mode. To reset to the default, use the no form of this command.
vbd-playout-delay nominal time
no vbd-playout-delay nominal
Syntax Description
Command Default
100 milliseconds
Command Modes
Voice-service configuration
Command History
12.2(8)T
This command was introduced on Cisco 2600 series and Cisco 3660 routers.
Examples
The following example sets the nominal AAL2 voice-band-detection playout-delay buffer to 202 milliseconds:
voice service voatm session protocol aal2vbd-playout-delay nominal 202Related Commands
voice-service
Specifies the voice encapsulation type and enters voice-service configuration mode.
vbr-rt
To configure the real-time variable bit rate (VBR) for VoATM voice connections, use the vbr-rt command in the appropriate configuration mode. To disable VBR for voice connections, use the no form of this command.
vbr-rt peak-rate average-rate burst
no vbr-rt
Syntax Description
Command Default
No real-time VBR settings are configured
Command Modes
For an ATM permanent virtual connection (PVC) or switched virtual circuit (SVC): Interface-ATM-VC configuration
For a virtual circuit (VC) class: VC-class configuration
For ATM VC bundle members: Bundle-vc configuration
Command History
Usage Guidelines
This command configures traffic shaping between voice and data PVCs. Traffic shaping is required so that the carrier does not discard calls. To configure voice and data traffic shaping, you must configure the peak, average, and burst options for voice traffic. Configure the burst value if the PVC will carry bursty traffic. Peak, average, and burst values are needed so that the PVC can effectively handle the bandwidth for the number of voice calls.
Calculate the minimum peak, average, and burst values for the number of voice calls as follows:
Peak Value
Peak value = (2 x the maximum number of calls) x 16K = _______________
Average Value
Calculate according to the maximum number of calls that the PVC will carry times the bandwidth per call. The following formulas give you the average rate in kbps:
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For VoIP:
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Average value = max calls x 128K = _______________
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Average value = max calls x 85K = _______________
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Average value = max calls x 85K = _______________
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Average value = max calls x 85K = _______________
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Average value = max calls x 43K = _______________
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Average value = max calls x 43K = _______________
If voice activity detection (VAD) is enabled, bandwidth usage is reduced by as much as 12 percent with the maximum number of calls in progress. With fewer calls in progress, bandwidth savings are less.
Burst Value
Set the burst size as large as possible, and never less than the minimum burst size. Guidelines are as follows:
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When you configure data PVCs that will be traffic shaped with voice PVCs, use aal5snap encapsulation and calculate the overhead as 1.13 times the voice rate.
Examples
The following example configures the traffic-shaping rate for ATM PVC 20. Peak, average, and burst rates are calculated based on a maximum of 20 calls on the PVC.
pvc 20encapsulation aal5mux voicevbr-rt 640 320 80Related Commands
encapsulation aal5
Configures the AAL and encapsulation type for an ATM PVC, SVC, or VC class.
vcci
To identify a permanent virtual circuit (PVC) to the call agent, use the vcci command in ATM virtual circuit (VC) configuration mode. To restore the default value, use the no form of this command.
vcci pvc-identifier
no vcci
Syntax Description
Command Default
No default behavior or values
Command Modes
ATM virtual circuit configuration mode
Command History
Usage Guidelines
The pvc-identifier argument is a unique 15-bit value for each PVC. The call agent sets up a call with the gateway by specifying the PVC using the pvc-identifier.
Examples
The following example shows how to assign a PVC identifier:
Router(config-if-atm-vc)# vcci 5278Related Commands
video codec (dial peer)
To assign a video codec to a VoIP dial peer, use the video codec command in dial peer configuration mode. To remove a video codec, use the no form of this command.
video codec {h261 | h263 | h263+ | h264}
no video codec
Syntax Description
Command Default
No video codec is configured.
Command Modes
Dial peer configuration
Command History
Usage Guidelines
Use this command to configure a video codec for a VoIP dial peer. If no video codec is configured, the default is transparent codec operation between the endpoints.
Examples
The following example shows configuration for video codec H.263+ on VoIP dial peer 30:
dial-peer voice 30 voipvideo codec h263+Related Commands
video codec (voice class)
To specify a video codec for a voice class, use the video codec command in voice class configuration mode. To remove the video codec, use the no form of this command.
video codec {h261 | h263 | h263+ | h264}
no video codec {h261 | h263 | h263+ | h264}
Syntax Description
h261
Apply this preference to video codec H.261
h263
Apply this preference to video codec H.263
h263+
Apply this preference to video codec H.263+
h264
Apply this preference to video codec H.264
Command Default
No video codec is configured.
Command Modes
Voice class configuration
Command History
Usage Guidelines
Use this command to specify one or more video codecs for a voice class.
Examples
The following example shows configuration for voice class codec 10 with two audio codec preferences and three video codec preferences:
voice class codec 10codec preference 1 g711alawcodec preference 2 g722video codec h261video codec h263video codec h264Related Commands
vofr
To enable Voice over Frame Relay (VoFR) on a specific data-link connection identifier (DLCI) and to configure specific subchannels on that DLCI, use the vofr command in frame relay DLCI configuration mode. To disable VoFR on a specific DLCI, use the no form of this command.
Switched Calls
vofr [data cid] [call-control [cid]]
no vofr [data cid] [call-control [cid]]
Switched Calls to Cisco MC3810 Multiservice Concentrators Running Cisco IOS Releases Release Before 12.0(7)XK and Release 12.1(2)T
vofr [cisco]
no vofr [cisco]
Cisco-Trunk Permanent Calls
vofr data cid call-control cid
no vofr data cid call-control cid
FRF.11 Trunk Calls
vofr [data cid] [call-control cid]
no vofr [data cid] [call-control cid]
Syntax Description
Command Default
Disabled
Command Modes
Frame relay DLCI configuration
Command History
Usage Guidelines
Table 239 lists the different options of the vofr command and which combination of options is used beginning in Cisco IOS Release 12.0(7)XK and Release 12.1(2)T.
Table 239 Combinations of the vofr Command
Switched call
(user dialed or auto-ringdown) to other routers supporting VoFRvofr [data cid]
[call-control [cid]]1Cisco-trunk permanent call
(private-line) to other routers supporting VoFRvofr data cid
call-control cidFRF.11 trunk call
(private-line) to other routers supporting VoFRvofr [data cid] [call-control cid]2
1 The recommended form of this command to use is vofr data 4 call-control 5.
2 For FRF.11 trunk calls, the call-control option is not required. It is required only if you mix FRF.11 trunk calls with other types of voice calls on the same PVC.
Examples
The following example, beginning in global configuration mode, shows how to enable VoFR on serial interface 1/1, DLCI 100. The example configures CID 4 for data; no call-control CID is defined.
interface serial 1/1frame-relay interface-dlci 100vofrTo configure CID 4 for data and CID 5 for call-control (both defaults), enter the following command:
vofr call-controlTo configure CID 10 for data and CID 15 for call-control, enter the following command:
vofr data 10 call-control 15To configure CID 4 for data and CID 15 for call-control, enter the following command:
vofr call-control 15To configure CID 10 for data and CID 5 for call-control, enter the following command:
vofr data 10 call-controlTo configure CID 10 for data with no call-control, enter the following command:
vofr data 10Related Commands
class
Assigns a VC class to a PVC.
frame-relay interface-dlci
Assigns a DLCI to a specified Frame Relay subinterface.
voice
To enable voice resource pool services for resource pool management, use the voice command in service profile configuration mode. To disable voice services, use the no form of this command.
voice
no voice
Syntax Description
This command has no arguments or keywords.
Command Default
Disabled
Command Modes
Service profile configuration mode
Command History
Examples
The following example shows that voice service is available and enables voice resource pool service using the voice command in service profile configuration mode:
Router(config)# resource-pool profile service voipRouter(config-service-profile)# ?Service Profile Configuration Commands:default Set a command to its defaultsexit Exit from resource-manager configuration modehelp Description of the interactive help systemmodem Configure modem service parametersno Negate a command or set in its defaultsvoice Configure voice service parametersRouter(config-service-profile)# voiceRelated Commands
resource-pool enable
Enables resource pool management.
resource-pool profile service voip
Defines the VoIP service profile for resource pool management.
voice call capacity mir
To set the value for the minimum interval between reporting (MIR), use the voice call capacity mir command in global configuration mode. To turn off these attributes, use the no form of this command.
voice call {carrier | trunk-group | prefix} capacity mir seconds
no voice call {carrier | trunk-group | prefix} capacity mir
Syntax Description
Command Default
10 seconds.
Command Modes
Global configuration.
Command History
Usage Guidelines
Because the available circuit (AC) attribute of a destination is very dynamic, reporting of this attribute should be handled carefully. AC should be reported as frequently as possible so that the location server has better information about the resources. However, the location server should not be overwhelmed with too many updates.
All of the AC reporting, called the interesting point of AC, is performed when the specified event happens within the minimum interval between reporting (MIR) time since last reporting. This command sets the amount of time used for the interval to control the number of interesting points that are reported so not to overwhelm the location server with too many AC updates.
The seconds argument cannot be set higher than the time configured for the capacity update interval.
Examples
The following example shows the minimum interval between reporting for the carrier address family set to 25 seconds:
Router(config)# voice call carrier capacity mir 25Related Commands
voice call capacity reporting
To turn on the reporting of maxima (first derivative) or inflection (second derivative) points in available capacity, use the voice call capacity reporting command in global configuration mode. To turn off the reporting, use the no form of this command.
voice call {carrier | trunk-group | prefix} capacity reporting {maxima | inflection}
no voice call {carrier | trunk-group | prefix} capacity reporting {maxima | inflection}
Syntax Description
Command Default
The capacity reporting function is turned off.
Command Modes
Global configuration.
Command History
Usage Guidelines
The smoothed curve of the available circuits (AC) has maxima, minima, and inflection points. When the curve has reached these points, this represents a change in the call rate.
Maximum, minimum and inflection points are illustrated in Figure 5.
Figure 5 Maximum, Minimum, and Inflection Points for Available Capacity
Examples
The following example shows the reporting of the available capacity inflection point on the trunk group is turned on:
Router(config)# voice call trunk-group capacity reporting inflectionRelated Commands
voice call capacity stw
To set the value for smoothing transition time for weight (STW), use the voice call capacity stw command in global configuration mode. To turn off these attributes, use the no form of this command.
voice call {carrier | trunk-group | prefix} capacity stw seconds
no voice call {carrier | trunk-group | prefix} capacity stw seconds
Syntax Description
carrier
Carrier code address family
trunk-group
Trunk group address family
prefix
E.164 prefix
seconds
Transitions time can be from 0 to 60 seconds with a default of 10.
Command Default
10 seconds.
Command Modes
Global configuration.
Command History
Usage Guidelines
Because the available circuit (AC) attribute of a destination is very dynamic, reporting of this attribute should be handled carefully. AC should be reported as frequently as possible so that the location server has better information about the resources. However, the location server should not be overwhelmed with too many updates.
A smoothing algorithm is applied to the quantity of AC being reported. This algorithm eliminates reporting of noise. The degree of smoothing can be configured with the voice call capacity stw command. This command sets the smoothing transition time for weight, which is the time it takes for current smoothed value of AC to come half way between the current smoothed value and the current instantaneous value of AC. Lower stw values speed the smoothed value of AC as it approaches the instantaneous value of AC. When stw is set to 0, the smoothed value is always equal to the instantaneous value of AC.
Examples
The following example shows the smoothing time for weight for the carrier address family set to 25 seconds:
Router(config)# voice call carrier capacity stw 25Related Commands
voice call capacity timer interval
To set the periodic interval for reporting capacity from carrier, trunk group, or prefix databases, use the voice call capacity timer interval command in global configuration mode. To turn off the interval, use the no form of this command.
voice call {carrier | trunk-group | prefix} capacity timer interval seconds
no voice call {carrier | trunk-group | prefix} capacity timer interval seconds
Syntax Description
carrier
Carrier code address family
trunk-group
Trunk group address family
prefix
E.164 prefix
seconds
Value from 10 to 3600 seconds.
Command Default
25 seconds
Command Modes
Global configuration
Command History
Usage Guidelines
For the reporting interval, a periodic timer called the capacity update timer handles updates of available circuit (AC) information and can be configured using the voice call capacity timer interval command. For example, if AC has changed since the last reporting, the AC is again reported when the capacity update timer expires.
Examples
The following example sets the timer interval for the prefixes set at 15 seconds:
Router(config)# voice call prefix capacity timer interval 15Related Commands
voice call convert-discpi-to-prog
To convert a disconnect message with a progress indicator (PI) to a progress message, use the voice call convert-discpi-to-prog command in global configuration mode. To return to the default condition, use the no form of this command.
voice call convert-discpi-to-prog [tunnel-IEs | always [tunnel-IEs]]
no voice call convert-discpi-to-prog
Syntax Description
Command Default
A disconnect message with a PI is not converted to a progress message.
Command Modes
Global configuration
Command History
Usage Guidelines
The voice call convert-discpi-to-prog command turns an ISDN disconnect message into a progress message. If you use the tunnel-IEs keyword, the information elements are not dropped when the disconnect message is converted to a progress message.
Examples
The following example changes a disconnect with PI to a progress message containing information elements (IEs):
voice call convert-discpi-to-prog tunnel-IEsThe following example changes a disconnect with PI to a progress message in the preconnected and connected states:
voice call convert-discpi-to-prog alwaysRelated Commands
disc_pi_off
Enables an H.323 gateway to disconnect a call when it receives a disconnect message with a PI.
voice call csr data-points
To set the number of call success rate (CSR) data points, use the voice call csr data-points command in global configuration mode. To disable the setting of the CSR data points, use the no form of this command.
voice call {carrier | trunk-group | prefix} csr data-points value
no voice call {carrier | trunk-group | prefix} csr data-points value
Syntax Description
carrier
Carrier code address family
trunk-group
Trunk group address family
prefix
E.164 prefix
value
Value from 10 to 50 data points. Default is 30 data points.
Command Default
30 data points
Command Modes
Global configuration
Command History
Examples
The following example sets the CSR data points for trunk groups at 10:
Router(config)# voice call trunk-group csr data-points 10Related Commands
voice call csr recording interval
Sets the recording interval for CSR.
voice call csr reporting interval
Sets the reporting interval for CSR.
voice call csr recording interval
To set the recording interval for call success rates (CSR), use the voice call csr recording interval command in global configuration mode. To disable the CSR recording interval, use the no form of this command.
voice call {carrier | trunk-group | prefix} csr recording interval minutes
no voice call {carrier | trunk-group | prefix} csr recording interval minutes
Syntax Description
carrier
Carrier code address family.
trunk-group
Trunk group address family.
prefix
E.164 prefix.
minutes
Value from 10 to 1000 minutes with a default of 60.
Command Default
60 minutes
Command Modes
Global configuration
Command History
Examples
The following example sets the CSR recording interval for prefixes at 30 minutes:
Router(config)# voice call carrier csr recording interval 30Related Commands
voice call csr data-points
Sets the number of call success rate (CSR) data points.
voice call csr reporting interval
Sets the reporting interval for CSR.
voice call csr reporting interval
To set the reporting interval for call success rate (CSR), use the voice call csr reporting interval command in global configuration mode. To disable the CSR recording interval, use the no form of this command.
voice call {carrier | trunk-group | prefix} csr reporting interval seconds
no voice call {carrier | trunk-group | prefix} csr reporting interval seconds
Syntax Description
carrier
Carrier code address family.
trunk-group
Trunk group address family.
prefix
E.164 prefix.
seconds
Value from 10 to 10000 seconds with a default of 25.
Command Default
25 seconds
Command Modes
Global configuration
Command History
Examples
The following example sets the CSR reporting interval for trunk groups at 40 seconds:
Router(config)# voice call carrier csr reporting interval 40Related Commands
voice call csr data-points
Sets the number of CSR data points.
voice call csr recording interval
Sets the recording interval for CSR.
voice call debug
To debug a voice call, use the voice call debug command in global configuration mode. To display a full globally unique identifier (GUID) or header as explained in the Usage Guidelines section, use the no form of this command.
voice call debug full-guid | short-header
no voice call debug full-guid | short-header
Syntax Description
Command Default
The short 6-byte header displays.
Command Modes
Global configuration
Command History
Usage Guidelines
Despite its nontraditional syntax (trailing rather than preceding "debug"), this is a normal debug command.
You can control the contents of the standardized header. Display options for the header are as follows:
•
•
•
The format of the GUID headers is as follows:
//CallEntryID/GUID/Module-Dependent-List/Function-name:.The format of the short header is as follows:
//CallEntryID/Function-name:.When the voice call debug short-header command is entered, the header displays with no GUID or module-specific parameters. When the no voice call debug short-header command is entered, the header, the 6-byte GUID, and module-dependent parameter output displays. The default option is displaying the 6-byte GUID trace.
Note
Examples
The following is sample output when the full-guid keyword is specified:
Router# voice call debug full-guid!00:05:12: //1/0E2C8A90-BC00-11D5-8002-DACCFDCEF87D/VTSP:(0:D):0:0:4385/vtsp_insert_cdb: 00:05:12: //-1/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/CCAPI/cc_incr_if_call_volume: 00:05:12: //1/0E2C8A90-BC00-11D5-8002-DACCFDCEF87D/VTSP:(0:D):0:0:4385/vtsp_open_voice_and _set_params:00:05:12: //1/0E2C8A90-BC00-11D5-8002-DACCFDCEF87D/VTSP:(0:D):0:0:4385/vtsp_modem_proto_fr om_cdb:00:05:12: //1/0E2C8A90-BC00-11D5-8002-DACCFDCEF87D/VTSP:(0:D):0:0:4385/set_playout_cdb: 00:05:12: //1/0E2C8A90-BC00-11D5-8002-DACCFDCEF87D/VTSP:(0:D):0:0:4385/vtsp_dsp_echo_cance ller_control:
Note
Table 240 describes significant fields shown in the display.
The following is sample output when the short-header keyword is specified:
Router(config)# voice call debug short-header!00:05:12: //1/vtsp_insert_cdb:00:05:12: //-1/cc_incr_if_call_volume:00:05:12: //1/vtsp_open_voice_and_set_params:00:05:12: //1/vtsp_modem_proto_from_cdb:00:05:12: //1/set_playout_cdb:00:05:12: //1/vtsp_dsp_echo_canceller_control:
Note
Related Commands
voice call disc-pi-off
To enable the gateway to treat a disconnect message with progress indicator (PI) like a standard disconnect without a PI, use the voice call disc-pi-off command in global configuration mode. To reset to the default, use the no form of this command.
voice call disc-pi-off
no voice call disc-pi-off
Syntax Description
This command has no keywords or arguments.
Command Default
Gateway disconnects incoming call leg when it receives a disconnect message with PI.
Command Modes
Global configuration
Command History
12.3(5)
This command was introduced.
12.3(7)T
This command was integrated into Cisco IOS Release 12.3(7)T.
Usage Guidelines
Use this command if the gateway is connected to a switch that sends a release immediately after it receives a Disconnect with PI. To properly handle the call, the switch should open a backward voice path and keep the call active. Otherwise the rotary dial peer feature does not work because the incoming call leg is disconnected. Using this command enables the gateway to handle a disconnect with PI like a regular disconnect message so that you can use the rotary dial peer feature.
Examples
The following example enables the gateway to properly handle a disconnect with PI:
voice call disc-pi-offRelated Commands
voice call send-alert
To enable the terminating gateway to send an alert message instead of a progress message after it receives a call setup message, use the voice call send-alert command in global configuration mode. To reset to the default, use the no form of this command.
voice call send-alert
no voice call send-alert
Syntax Description
This command has no arguments or keywords.
Command Default
The terminating gateway sends a progress message after it receives a call Setup message.
Command Modes
Global configuration
Command History
Usage Guidelines
In Cisco IOS Release 12.1(3)XI and later, the terminating gateway sends a Progress message with a progress indicator (PI) after it receives a Setup message. Previously, the gateway responded with an Alert message after receiving a call. In some cases, if the terminating switch does not forward the progress message to the originating gateway, the originating gateway does not cut-through the voice path until a Connect is received and the caller does not hear a ringback tone. In these cases, you can use the voice call send-alert command to make the gateway backward compatible with releases earlier than Cisco IOS Release 12.1(3)XI. If you configure the voice call send-alert command, the terminating gateway sends an Alert message after it receives a Setup message from the originating gateway.
To complete calls from a PRI to an FXS interface, configure the voice call send-alert command on the FXS device.
Examples
The following example configures the gateway to send an Alert message:
voice call send-alertRelated Commands
progress_ind
Sets a specific PI in call Setup, Progress, or Connect messages from an H.323 VoIP gateway.
voice call trigger hwm
To set the value for high water mark in the available capacity in the trunk group or prefix databases, use the voice call trigger hwm command in global configuration mode. To disable the trigger point, use the no form of this command.
voice call {carrier | trunk-group | prefix} trigger hwm percent
no voice call {carrier | trunk-group | prefix} trigger hwm percent
Syntax Description
Command Default
80 percent
Command Modes
Global configuration.
Command History
Usage Guidelines
Available circuits are reported when the value of AC goes above a threshold, called the high water mark. This can be configured with the voice call trigger hwm command. When the hwm option is selected and the value is set to 100, no update is sent due to high water mark.
Examples
The following example sets the trigger for available capacity on trunk groups to send at a high water mark of 75%:
Router(config)# voice call trunk-group trigger hwm 75Related Commands
voice call trigger lwm
To set the value for low water mark in the available capacity in the trunk group or prefix databases, use the voice call trigger lwm command in global configuration mode. To disable the trigger point, use the no form of this command.
voice call {carrier | trunk-group | prefix} trigger lwm percent
no voice call {carrier | trunk-group | prefix} trigger lwm percent
Syntax Description
carrier
Carrier code address family
trunk-group
Trunk group address family
prefix
E.164 prefix
percent
Value can be 0 to 30 percent with a default of 10. If set to 0, this trigger will be turned off.
Command Default
10 percent
Command Modes
Global configuration
Command History
Usage Guidelines
Available circuits are reported when the value of AC falls below a threshold, called the low water mark. When the lwm option is selected and the value is set to 0, no update is sent due to low water mark.
Examples
The following example sets the trigger for available capacity for E.164 prefixes to send at a low water mark of 25%:
Router(config)# voice call prefix trigger lwm 25Related Commands
voice call trigger percent-change
To set the value for percentage change, low water mark and high water mark in the available capacity in the trunk group or prefix databases, use the voice call trigger command in global configuration mode. To disable the trigger point, use the no form of this command.
voice call {carrier | trunk-group | prefix} trigger percent-change percent
no voice call {carrier | trunk-group | prefix} trigger percent-change percent
Syntax Description
Command Default
30 percent
Command Modes
Global configuration.
Command History
Usage Guidelines
Available circuits are reported when the absolute percent change is above a threshold. When the percent-change option is selected and the value is set to 0, no update for percent change is sent
Examples
The following example sets the trigger for available capacity on the carrier codes to send at a percentage change of 15%:
Router(config)# voice call carrier trigger percent-change 15Related Commands
voicecap configure
To apply a voicecap on NextPort platforms, use the voicecap configure command in voice-port configuration mode. To remove a voicecap, use the no form of this command.
voicecap configure {name}
no voicecap configure {name}
Syntax Description
Command Default
No default values or behavior
Command Modes
Voice-port configuration
Command History
Usage Guidelines
The character value for the name argument must be identical to the value entered when you created the voicecap using the voicecap entry command.
Examples
The following example configures a voicecap with the name qualityERL:
Router> enableRouter# configure terminalRouter(config)# voicecap entry qualityERL v270=120Router(config)# voice-port 3/0:DRouter(config-voiceport)# voicecap configure qualityERLRelated Commands
voicecap entry
To create a voicecap, use the voicecap entry command in global configuration mode. To disable a voicecap, use the no form of this command.
voicecap entry [name string]
no voicecap entry [name string]
Syntax Description
Command Default
No voice caps can be applied to configure firmware.
Command Modes
Global configuration
Command History
Usage Guidelines
This command configures firmware through voicecap strings. This command allows you to assign values to specific registers. Voicecaps are applied to specific voice ports at system startup.
The voicecap values can be entered in a DSP-recognizable format called raw format. They can also be entered in standard format, which allows you to use commonly accessible values, such as decibels.
Starting with Cisco IOS Release 12.4(4)XC, this command can be used to configure GSMAMR-NB codecs on Cisco AS5350XM and Cisco AS5400XM platforms. The register values for GSMAMR-NB are shown in Table 241.
Examples
The following example creates a voicecap string for a GSMAMR-NB codec named gsmamrnb-ctrl with V register 0 set to 1:
Router> enableRouter# configure terminalRouter(config)# voicecap entry gsmamrnb-ctrl v0=1Related Commands
voice-card
To enter voice-card configuration mode and configure a voice card, use the voice-card command in global configuration mode. There is no no form of this command.
voice-card slot
Syntax Description
Command Default
No default behavior or values
Command Modes
Global configuration
Command History
Usage Guidelines
Voice-card configuration mode is used for commands that configure the use of digital signal processing (DSP) resources, such as codec complexity and DSPs. DSP resources can be found in digital T1/E1 packet voice trunk network modules on Cisco 2600 series, Cisco 3600 series, and Cisco 3700 series.
Codec complexity is configured in voice-card configuration mode and has the following platform-specific usage guidelines:
•
DSP resource sharing is also configured in voice-card configuration mode. On the Cisco 2600 series, Cisco 2600XM, Cisco 3660, Cisco 3725, and Cisco 3745 under specific circumstances, configuration of the dspfarm command enters DSP resources on a network module or AIM into a DSP resource pool. Those DSP resources are then available to process voice traffic on a different network module or voice/WAN interface card (VWIC). See the dspfarm (voice-card) command reference for more information about DSP resource sharing.
Note
This command does not have a no form.
Examples
The following example enters voice-card configuration mode to configure resources on the network module in slot 1:
voice-card 1The following example shows how to enter voice-card configuration mode and load high-complexity DSP firmware on voice-card 0. The dspfarm command enters the DSP resources on the AIM specified in the voice-card command into the DSP resource pool.
voice-card 0codec complexity highdspfarmRelated Commands
voice class aaa
To enable dial-peer-based VoIP AAA configurations, use the voice class aaa command in global configuration mode. To disable dial-peer-based VoIP AAA configurations, use the no form of this command.
voice class aaa tag
no voice class aaa tag
Syntax Description
tag
A number used to identify voice class AAA. The range is from 1 to 10000. There is no default value.
Command Default
No default behaviors or values
Command Modes
Global configuration
Command History
12.2(11)T
This command was introduced on the Cisco 3660, Cisco AS5300, Cisco AS5350, Cisco AS5400, Cisco AS5800, and Cisco AS5850.
Usage Guidelines
The voice class aaa configuration command sets up a voice service class that allows you to perform dial-peer-based AAA configurations.
The command activates voice class AAA configuration mode. Commands that are configured in voice class AAA configuration mode are listed in the "Related Commands" section.
Examples
The following example shows AAA configurations in voice class AAA configuration mode. The number assigned to the tag is 1.
voice class aaa 1authentication method dpauthorization method dpaccounting method dpin-boundaccounting template temp-dpThe following example shows accounting configurations in voice class AAA configuration mode:
voice class aaa 2accounting method dp-out out-boundaccounting template temp-dp out-boundRelated Commands
voice-class aaa (dial peer)
To apply properties defined in the voice class to a dial peer, use the voice-class aaa command in dial peer configuration mode. This command does not have a no form.
voice-class aaa tag
Syntax Description
Command Default
No default behaviors or values
Command Modes
Dial peer configuration
Command History
12.2(11)T
This command was introduced on the Cisco 3660, Cisco AS5300, Cisco AS5350, Cisco AS5400, Cisco AS5800, and Cisco AS5850.
Usage Guidelines
Properties that are configured in voice class AAA configuration mode can be applied to a dial peer by using this command.
Examples
The following example shows redirecting AAA requests using Digital Number Identification Service (DNIS). You define a voice class to specify the AAA methods and then use this command.
voice class aaa 1authentication method kzauthorization method kzaccounting method kz!dial-peer voice 100 voipincoming called-number 50..session target ipv4:1.5.31.201voice-class aaa 1Related Commands
voice class busyout
To create a voice class for local voice busyout functions, use the voice class busyout command in global configuration mode. To delete the voice class, use the no form of this command.
voice class busyout tag
no voice class busyout tag
Syntax Description
Command Default
No voice class is configured for busyout functions.
Command Modes
Global configuration
Command History
12.1(3)T
This command was introduced on the Cisco 2600 series, Cisco 3600 series, and Cisco MC3810.
Usage Guidelines
You can apply a busyout voice class to multiple voice ports. You can assign only one busyout voice class to a voice port. If a second busyout voice class is assigned to a voice port, the second voice class replaces the one previously assigned.
If you assign a busyout voice class to a voice port, you may not assign separate busyout commands directly to the voice port, such as busyout monitor serial, busyout monitor ethernet, or busyout monitor probe.
Examples
The following example configures busyout voice class 20, in which the connections to two remote interfaces are monitored by a response time reporter (RTR) probe with a G.711ulaw profile, and voice ports are busied out whenever both links have a packet loss exceeding 10 percent and a packet delay time exceeding 2 seconds:
voice class busyout 20busyout monitor probe 171.165.202.128 g711u loss 10 delay 2000busyout monitor probe 171.165.202.129 g711u loss 10 delay 2000The following example configures busyout voice class 30, in which voice ports are busied out when serial ports 0/0, 1/0, 2/0, and 3/0 go out of service.
voice class busyout 30busyout monitor serial 0/0busyout monitor serial 1/0busyout monitor serial 2/0busyout monitor serial 3/0Related Commands
voice-class called-number (dial peer)
To assign a previously defined voice class called number to an inbound or outbound POTS dial peer, use the voice-class called-number command in dial peer configuration mode. To remove a voice class called number from the dial peer, use the no form of this command.
voice-class called-number [inbound | outbound] tag
no voice-class called-number
Syntax Description
Command Default
No voice class called number is configured on the dial peer.
Command Modes
Dial peer configuration
Command History
Usage Guidelines
Use this command to assign a previously defined voice class called number to a dial peer for a static H.320 secondary call dial plan. Use the inbound keyword for inbound POTS dial peers, and the outbound keyword for outbound POTS dial peers.
Note
Examples
The following example shows configuration for an outbound voice class called number outbound on POTS dial peer 22:
dial-peer voice 22 potsvoice-class called-number inbound 300Related Commands
voice class called number
To define a voice class called number or range of numbers, use the voice class called number command in global configuration mode. To remove a voice class called number, use the no form of this command.
voice class called number {inbound | outbound | pool} tag
no voice class called number
Syntax Description
Command Default
No voice class called number is configured.
Command Modes
Global configuration
Command History
Usage Guidelines
Use this command to define one or more static voice class called numbers for inbound and outbound POTS dial peers or a dynamic voice class called number pool. The indexes for a voice class called number are defined with the index (voice class) command.
Note
Examples
The following example shows configuration for an outbound voice class called number:
voice class called number outbound 30index 1 5550100index 2 5550101index 3 5550102index 4 5550103The following example shows configuration for a voice class called number pool:
voice class called number pool 1index 1 5550100 - 5550199Related Commands
voice-class called-number-pool
To assign a previously defined voice class called number pool to a voice port, use the voice-class called-number-pool command in voice class configuration mode. To remove a voice class called number pool from the voice port, use the no form of this command.
voice-class called-number-pool tag
no voice-class called-number-pool
Syntax Description
Command Default
No voice class called number pool is assigned to the voice port.
Command Modes
Voice class configuration
Command History
Usage Guidelines
Use this command to assign a voice class called number pool to a voice port for a dynamic H.320 secondary call dial plan.
Examples
The following example shows configuration for voice class called number pool 100 on voice port 1/0/0:
voice-port 1/0/0voice-class called-number-pool 100Related Commands
voice class codec
To enter voice-class configuration mode and assign an identification tag number for a codec voice class, use the voice class codec command in global configuration mode. To delete a codec voice class, use the no form of this command.
voice class codec tag
no voice class codec tag
Syntax Description
tag
Unique number that you assign to the voice class. Range is from 1 to 10000. There is no default.
Command Default
No default behavior or values
Command Modes
Global configuration
Command History
Usage Guidelines
This command only creates the voice class for codec selection preference and assigns an identification tag. Use the codec preference command to specify the parameters of the voice class, and use the voice-class codec dial-peer command to apply the voice class to a VoIP dial peer.
Note
Examples
The following example shows how to enter voice-class configuration mode and assign a voice class tag number starting from global configuration mode:
voice class codec 10After you enter voice-class configuration mode for codecs, use the codec preference command to specify the parameters of the voice class.
The following example creates preference list 99, which can be applied to any dial peer:
voice class codec 99codec preference 1 g711alawcodec preference 2 g711ulaw bytes 80codec preference 3 g723ar53codec preference 4 g723ar63 bytes 144codec preference 5 g723r53codec preference 6 g723r63 bytes 120codec preference 7 g726r16codec preference 8 g726r24codec preference 9 g726r32 bytes 80codec preference 10 g728codec preference 11 g729br8codec preference 12 g729r8 bytes 50Related Commands
voice-class codec (dial peer)
To assign a previously configured codec selection preference list (codec voice class) to a Voice over IP (VoIP) dial peer, enter the voice-class codec command in dial peer configuration mode. To remove the codec preference assignment from the dial peer, use the no form of this command.
voice-class codec tag
no voice-class codec tag
Syntax Description
tag
Unique number assigned to the voice class. Range is from 1 to 10000. The tag number maps to the tag number created using the voice class codec global configuration command.
Command Default
Dial peers have no codec voice class assigned.
Command Modes
Dial peer configuration
Command History
Usage Guidelines
You can assign one voice class to each VoIP dial peer. If you assign another voice class to a dial peer, the last voice class assigned replaces the previous voice class.
Note
Examples
The following example shows how to assign a previously configured codec voice class to a dial peer:
dial-peer voice 100 voipvoice-class codec 10Related Commands
voice class custom-cptone
To create a voice class for defining custom call-progress tones to be detected, use the voice class custom-cptone command in global configuration mode. To delete the voice class, use the no form of this command.
voice class custom-cptone cptone-name
no voice class custom-cptone cptone-name
Syntax Description
cptone-name
Descriptive identifier for this class of custom call-progress tones that associates this set of custom call-progress tones with voice ports.
Command Default
No voice class of custom call-progress tones is created.
Command Modes
Global configuration
Command History
Usage Guidelines
After you create a voice class, you need to define custom call-progress tones for this voice class using the dualtone command.
Examples
The following example creates a voice class named country-x.
voice class custom-cptone country-xThe following example deletes the voice class named country-x.
no voice class custom-cptone country-xRelated Commands
voice class dualtone
To create a voice class for Foreign Exchange Office (FXO) supervisory disconnect tone detection parameters, use the voice class dualtone command in global configuration mode. To delete the voice class, use the no form of this command.
voice class dualtone tag
no voice class dualtone tag
Syntax Description
Command Default
No voice class is configured for tone detection parameters.
Command Modes
Global configuration
Command History
12.1(3)T
This command was introduced on the Cisco 2600 series, Cisco 3600, and the Cisco MC3810.
Usage Guidelines
Use this command first to create the voice class. Then use the supervisory disconnect dualtone voice-class command to assign the voice class to a voice port.
A voice class can define any number of tones to be detected. You need to define a matching tone for each supervisory disconnect tone expected from a PBX or from the public switched telephone network (PSTN).
Examples
The following example configures voice class dualtone 70, which defines one tone with two frequency components, and does not configure a cadence list:
voice class dualtone 100freq-pair 1 350 440freq-max-deviation 10freq-max-power 6freq-min-power 25freq-power-twist 15freq-max-delay 16cadence-min-on-time 50cadence-max-off-time 400cadence-variation 8exitThe following example configures voice class dualtone 100, which defines one tone with two frequency components, and configures a cadence list:
voice class dualtone 100freq-pair 1 350 440freq-pair 2 480 850freq-max-deviation 10freq-max-power 6freq-min-power 25freq-power-twist 15freq-max-delay 16cadence-min-on-time 50cadence-max-off-time 400cadence-list 1 100 100 300 300cadence-variation 8exitThe following example configures voice class dualtone 90, which defines three tones, each with two frequency components, and configures two cadence lists:
voice class dualtone 90freq-pair 1 350 440freq-pair 2 480 850freq-pair 3 1000 1250freq-max-deviation 10freq-max-power 6freq-min-power 25freq-power-twist 15freq-max-delay 16cadence-min-on-time 50cadence-max-off-time 500cadence-list 1 100 100 300 300 100 200cadence-list 2 100 200 100 400cadence-variation 8exitRelated Commands
supervisory disconnect dualtone voice-class
Assigns a previously configured voice class for FXO supervisory disconnect tone to a voice port.
voice class dualtone-detect-params
To create a voice class for defining a set of tolerance limits for the frequency, power, and cadence parameters of the tones to be detected, use the voice class dualtone-detect-params command in global configuration mode. To delete the voice class, use the no form of this command.
voice class dualtone-detect-params tag
no voice class dualtone-detect-params tag
Syntax Description
Command Default
No voice class is configured for defining answer-supervision tolerance limits.
Command Modes
Global configuration
Command History
Usage Guidelines
Use this command to create a voice class in which you can define maximum and minimum call-progress tone tolerance parameters that you can apply to any voice port. These parameters further define the call-progress tones defined by the voice class custom-cptone command. Use the supervisory dualtone-detect-params command to apply these tolerance parameters to a voice port.
Examples
The following example creates voice class 70, in which you can specify modified boundaries and limits for call-progress tone detection.
voice class dualtone-detect-params 70freq-max-deviation 25freq-max-power -5freq-min-power -20freq-power-twist 10freq-max-delay 50cadence-variation 80exitRelated Commands
