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Cisco MC3810 Command Reference Guide
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Global Configuration Commands
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EXEC Commands
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T1/E1 Controller Commands
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Frame Relay Commands
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FR - ATM Interworking Command
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ATM Commands
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HDLC Command
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UIO Serial Port Commands
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Voice Port Configuration Commands
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Dial-Peer Configuration Commands
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PBX Signaling Format Commands
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Cisco MC3810-IGX Interworking Commands
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CDR Command
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Router Memory Commands
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Table Of Contents
Voice Port Configuration Commands
Voice Port Configuration Commands
This chapter describes the commands used to configure voice ports. lists the voice port configuration commands and maps which commands are supported on which voice call signaling types.
Table 9-1 Voice Port Commands
auto-cut-through
To enable the Cisco MC3810 to complete a call when a PBX does not provide an M-lead response, use the auto-cut-through voice-port configuration command. Use the no form of this command to disable the auto-cut-through operation.
auto-cut-through
no auto-cut-throughSyntax Description
This command has no arguments or keywords.
Defaults
Enabled
Command Mode
Voice-port configuration
Command History
Usage Guidelines
The auto-cut-through command applies to E&M voice ports only on the Cisco MC3810.
Examples
The following example enables the Cisco MC3810 to complete a call when a PBX does not provide an M-lead response:
voice-port 1/1auto-cut-throughbusyout forced
To force a voice port into busyout state, use the busyout forced voice-port configuration command. To remove a voice port from busyout state, use the no form of this command.
busyout forced
no busyout forced
Syntax Description
This command has no arguments or keywords.
Defaults
The voice-port is not in busyout state.
Command Mode
Voice-port configuration
Command History
Usage Guidelines
If you have forced a voice port into busyout state, you must enter the no busyout forced command if you wish remove the busyout state from the voice port.
Examples
The following example configures the voice port on the Cisco MC3810 into forced busyout state:
voice-port 1/1busyout forcedRelated Commands
busyout-monitor
To place a voice port into busyout monitor state, use the busyout-monitor voice-port configuration command. To remove the busyout monitor state on the voice-port, use the no form of this command.
busyout-monitor interface
no busyout-monitor interface
Syntax Description
interface
The interface associated with the voice port that will be monitored for events that would trigger a voice-port busyout. Choices are the following:
•
Serial 0
•
•
Defaults
The voice port is not in busyout monitor state.
Command Mode
Voice-port configuration
Command History
Usage Guidelines
This command is only supported on the Cisco MC3810.
When you place the voice port in busyout monitor state, the voice port monitors the serial interface for events that would trigger the voice port to enter busyout state.
Examples
The following example configures the voice port to monitor serial port 0:0 for events that would trigger a busyout state on the voice port:
voice-port 1/1busyout-monitor serial 0:0Related Commands
busyout-seize
To specify the busyout seize procedure for a voice port, use the busyout-seize voice-port configuration command. To restore the default busyout seize state on the voice-port, use the no form of this command.
busyout-seize {ignore | repeat}
no busyout-seize {ignore | repeat}
Syntax Description
Defaults
On busyout, the loop is closed and remains in the busyout state.
Command Mode
Voice-port configuration
Command History
Usage Guidelines
This command is only supported on the Cisco MC3810.
Examples
The following example configures the busyout seize to the ignore state:
voice-port 1/1busyout-seize ignoreRelated Commands
codec
To configure voice compression on the Cisco MC3810 voice port, use the codec voice-port configuration command. Use the no form of this command to restore the default value.
codec {g729r8 | g729ar8 | g726r32 | g711alaw | g711ulaw}
no codecSyntax Description
Defaults
g729ar8 compression mode is enabled.
Command Mode
Voice-port configuration
Command History
11.3 MA
This command was first introduced.
12.0
The g726r32, g711alaw, and g711ulaw options were added.
Usage Guidelines
The g729ar8 compression mode can support a maximum of 24 simultaneously active on-net voice calls and has a nominal data rate of 8 kbps.
The g729r8 compression mode can support a maximum of 12 simultaneously active on-net voice calls and has a nominal data rate of 8 kbps.
The g726r32 compression mode has a nominal data rate of 32 kbps.
The g711alaw compression mode has a nominal data rate of 64 kbps.
The g711ulaw compression mode has a nominal data rate of 64 kbps.
This command applies to both analog and digital voice ports on the Cisco MC3810.
Examples
The following example configures voice port 1/1 on the Cisco MC3810 to support g729r8 compression:
voice-port 1/1codec g729r8Related Commands
Specifies the companding standard used to convert between analog and digital signals in PCM systems.
comfort-noise
To generate background noise to fill silent gaps during calls if VAD is activated, use the comfort-noise voice-port configuration command. Use the no form of this command to provide silence when the remote party is not speaking and VAD is enabled at the remote end of the connection.
comfort-noise
no comfort-noiseSyntax Description
This command has no arguments or keywords.
Defaults
Enabled
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Use the comfort-noise command to generate background noise to fill silent gaps during calls if VAD is activated. If comfort-noise is not enabled, and VAD is enabled at the remote end of the connection, the user will hear dead silence when the remote party is not speaking.
The configuration of comfort-noise only affects the silence generated at the local interface; it does not affect the use of VAD on either end of the connection or the silence generated at the remote end of the connection.
Note
Examples
The following example enables background noise on the Cisco MC3810:
voice-port 1/1comfort-noiseRelated Commands
compand-type
To specify the companding standard used to convert between analog and digital signals in PCM systems on the Cisco MC3810, use the compand-type voice-port configuration command. Use the no form of this command to disable the compand type.
compand-type {u-law | a-law}
no compand-type {u-law | a-law}Syntax Description
u-law
Specifies the North American mu-law ITU-T PCM encoding standard.
a-law
Specifies the European a-law ITU-T PCM encoding standard.
Defaults
u-law (T1 digital)
a-law (E1 digital)Command Mode
Voice-port configuration
Command History
Usage Guidelines
This command applies only to the Cisco MC3810.
Examples
The following example configures a-law encoding on voice port 1/1 on the Cisco MC3810:
voice-port 1/1compand-type a-lawRelated Commands
condition
To manipulate the signaling bit-pattern for all voice signaling types on the Cisco MC3810, use the condition command. Use the no form of this command to turn off conditioning on the voice-port.
condition {[tx-a-bit | tx-b-bit | tx-c-bit | tx-d-bit] [rx-a-bit | rx-b-bit | rx-c-bit | rx-d-bit]}
{on | off | invert}
no condition {[tx-a-bit | tx-b-bit | tx-c-bit | tx-d-bit] [rx-a-bit | rx-b-bit | rx-c-bit | rx-d-bit]}
{on | off | invert}Syntax Description
Defaults
No bit state conditions are manipulated.
Command Mode
Voice-port configuration
Command History
Usage Guidelines
This command applies to the Cisco MC3810 only.
Use the condition command to manipulate the bit patterns sent or received by the Cisco MC3810 to match expected patterns on a connected device. Be careful not to destroy the information content of the bit pattern. For example, forcing the A-bit on or off will prevent FXO interfaces from being able to generate both an on-hook and off-hook state.
If conditioning is required, it typically is applied to both transmit and receive bits; however, conditioning can be applied to only transmit or receive bits, as required.
Examples
The following example inverts the signaling format bit-pattern on voice port 1/1 on the Cisco MC3810:
voice-port 1/1condition tx-a-bit invertcondition rx-a-bit invertRelated Commands
Defines the transmit and receive bits for E&M and E&M Melcas voice signaling.
Configures an E&M or E&M Melcas voice port on the Cisco MC3810 to ignore specific receive bits.
connection
To specify a connection mode for a voice port, use the connection voice-port configuration command. Use the no form of this command to disable a connection mode.
connection {plar | tie-line | plar-opx} string
no connection {plar | tie-line | plar-opx} stringSyntax Description
Defaults
No connection mode is specified.
Command Mode
Voice-port configuration
Command History
11.3(1) T
This command was first introduced.
11.3(1) MA5 and 12.0(2) T
The plar-opx keyword was added.
Usage Guidelines
Use the connection command to specify a connection mode for a specific interface. For example, use the connection plar command to specify a PLAR interface. The string you configure for this command is used as the called number for all calls coming in over this connection. The destination dial peer is determined by called number.
If the connection command is not configured, the standard session application outputs a dial tone when the interface goes off-hook until enough digits are collected to match a dial peer and complete the call.
The connection tie-line command is used on the Cisco MC3810 when a dial plan requires that additional digits be added in front of any digits dialed by the PBX, and that the combined set of digits be used to route the call via the dial peers and into the network. The operation is similar to the connection plar command operation, but in this case the tie-line port also waits to collect digits from the PBX. The tie-line digits are also automatically stripped by a terminating port.
Examples
The following example selects tie-line as the connection mode on the Cisco MC3810, with a destination telephone number of 555-9262:
voice-port 1/1connection tie-line 5559262Related Commands
cptone
To configure a voice call progress tone locale, use the cptone voice-port configuration command. Use the no form of this command to restore the default value.
cptone locale
no cptone localeSyntax Description
Defaults
northamerica.
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Use the cptone command to specify a regional analog voice interface-related tone, ring, and ring cadence setting for a specified voice port.
Examples
The following example configures Singapore as the call progress tone locale on the Cisco MC3810:
voice-port 1/1cptone singaporeRelated Commands
define
To define the transmit and receive bits for E&M and E&M Melcas voice signaling on the Cisco MC3810, use the define voice-port configuration command. Use the no form of this command to restore the default value.
define {Tx-bits | Rx-bits} {seize | idle} {0000 | 0001 | 0010 | 0011 | 0100 | 0101 |
0110 | 0111 | 1000 | 1001 | 1010 | 1011 | 1100 | 1101 | 1110 | 1111}no define {Tx-bits | Rx-bits} {seize | idle} {0000 | 0001 | 0010 | 0011 | 0100 | 0101 |
0110 | 0111 | 1000 | 1001 | 1010 | 1011 | 1100 | 1101 | 1110 | 1111}Syntax Description
Defaults
The default is to use the preset signaling patterns as defined in ANSI and CEPT standards, as follows:
For E&M:
Tx-bits idle 0000 (0001 if on E1 trunk)
Tx-bits seize 1111
Rx-bits idle 0000
Rx-bits seize 1111For E&M Melcas:
Tx-bits idle 1101
Tx-bits seize 0101
Rx-bits idle 1101
Rx-bits seize 0101Command Mode
Voice-port configuration
Command History
Usage Guidelines
This command applies to digital voice ports associated with T1/E1 controllers on the Cisco MC3810 only.
Use the define command to match the E&M bit patterns with the attached telephony device. Be careful not to define invalid configurations, such as all 0000 on E1, or identical seized and idle states. Use this command with the ignore command.
Examples
To configure a voice-port sending traffic in North American E&M signaling format to convert the signaling to Mercury Exchange Limited (MEL) CAS format, enter the following commands:
voice-port 1/1define rx-bits idle 1101define rx-bits idle 0101define tx-bits seize 1101define tx-bits seize 0101Related Commands
Manipulate the signaling bit-pattern for all voice signaling types.
Configures an E&M or E&M Melcas voice port on the Cisco MC3810 to ignore specific receive bits.
description
To include a description of what this voice port is connected to, use the description voice-port configuration command. Use the no form of this command to disable this feature.
description string
no descriptionSyntax Description
Defaults
Enabled with a null string
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Use the description command to include descriptive text about this voice-port connection. This information is displayed when you issue a show command and does not affect the operation of the interface in any way.
Examples
The following example identifies voice port 1/1 on the Cisco MC3810 as being connected to the Marketing department:
voice-port 1/1description marketing_deptdial-type
To specify the type of out-dialing for voice port interfaces, use the dial-type voice-port configuration command. Use the no form of this command to disable the selected type of dialing.
dial-type {dtmf | pulse}
no dial-typeSyntax Description
Defaults
dtmf
Command Mode
Voice-port configuration
Command History
11.3(1) T
This command was first introduced.
11.3(1) MA3
The pulse-dialer option was added.
Usage Guidelines
Use the dial-type command to specify an out-dialing type for an FXO or E&M voice port interface; this command is not applicable to FXS voice ports because they do not generate out-dialing. Voice ports can always detect dtmf and pulse signals. This command does not affect voice port dialing detection.
The dial-type command affects out-dialing as configured for the dial peer.
Examples
The following example configures a voice port on the Cisco MC3810 to support a rotary (pulse tone) dialer:
voice-port 1/1dial-type pulseecho-cancel coverage
To adjust the size of the echo canceller, use the echo-cancel coverage voice-port configuration command. Use the no form of this command to reset this command to the default value.
echo-cancel coverage milliseconds
no echo-cancel coverage millisecondsSyntax Description
milliseconds
Number of milliseconds the echo-canceller will cover on a given signal. Valid values are 16, 24, and 32.
Defaults
16 milliseconds
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Use the echo-cancel coverage command to adjust the coverage size of the echo canceller. This command enables cancellation of voice that is sent out the interface and received back on the same interface within the configured amount of time. If the local loop (the distance from the analog interface to the connected equipment producing the echo) is longer, the configured value of this command should be extended.
If you configure a longer value for this command, it will take the echo canceller longer to converge; in this case, the user might hear slight echo when the connection is initially set up. If the configured value for this command is too short, the user might hear some echo for the duration of the call because the echo canceller is not cancelling the longer delay echoes.
There is no echo or echo cancellation on the network (for example, non-POTS) side of the connection.
Note
Examples
The following example adjusts the size of the echo canceller to 16 milliseconds on the Cisco MC3810:
voice-port 1/1echo-cancel enableecho-cancel coverage 16Related Commands
echo-cancel enable
To enable the cancellation of voice that is sent out the interface and is received back on the same interface, use the echo-cancel enable voice-port configuration command. Use the no form of this command to disable echo cancellation.
echo-cancel enable
no echo-cancel enableSyntax Description
This command has no arguments or keywords.
Defaults
Enabled for all interface types.
Command Mode
Voice-port configuration
Command History
Usage Guidelines
The echo-cancel enable command enables cancellation of voice that is sent out the interface and is received back on the same interface; sound that is received back in this manner is perceived by the listener as an echo. Disabling echo cancellation might cause the remote side of a connection to hear an echo. Because echo cancellation is an invasive process that can minimally degrade voice quality, this command should be disabled if it is not needed.
The echo-cancel enable command does not affect the echo heard by the user on the analog side of the connection.
There is no echo path for a 4-wire E&M interface. The echo canceller should be disabled for that interface type.
Note
Examples
The following example enables the echo cancellation feature and adjusts the size of the echo canceller to 16 milliseconds on the Cisco MC3810:
voice-port 1/1echo-cancel enableecho-cancel coverage 16Related Commands
Sets the echo-cancel coverage duration in milliseconds.
Enables non-linear processing in the echo canceller.
idle voltage
To change the idle state voltage presented to the line by an FXS voice port on a Cisco MC3810, use the idle voltage voice-port configuration command. Use the no form of this command to restore the default value.
idle voltage {low | high}
no idle voltage {low | high}Syntax Description
low
Sets the idle voltage to 24-volt battery feed.
high
Sets the idle voltage to 48-volt battery feed.
Defaults
Idle voltage is low (24-volt battery feed).
Command Mode
Voice-port configuration
Command History
Usage Guidelines
This command applies only to analog FXS voice ports on the Cisco MC3810. If the idle voltage is set to high, the battery feed voltage reverts to 24V whenever any device connected to the port is active (off hook).
Set the idle voltage to high when connecting to devices that monitor the line voltage to determine if a parallel load has already answered calls.
Examples
To set the idle voltage to high on voice port 1/1, enter the following commands:
voice-port 1/1idle voltage highignore
To configure the E&M or E&M Melcas voice port on the Cisco MC3810 to ignore specific receive bits, use the ignore voice-port configuration command. Use the no form of this command to restore the default value.
ignore {rx-a-bit | rx-b-bit | rx-c-bit | rx-d-bit}
no ignore {rx-a-bit | rx-b-bit | rx-c-bit | rx-d-bit}Syntax Description
rx-a-bit
Ignores the receive A bit.
rx-b-bit
Ignores the receive B bit.
rx-c-bit
Ignores the receive C bit.
rx-d-bit
Ignores the receive D bit.
Defaults
The default is mode-dependent:
E&M:
no ignore rx-a-bit
ignore rx-b-bit, rx-c-bit, rx-d-bitE&M Melcas:
no ignore rx-b-bit, rx-c-bit, rx-d-bit
Command Mode
Voice-port configuration
Command History
Usage Guidelines
This command applies only to digital voice ports on the Cisco MC3810.
Use this command with the define command.
Examples
To configure voice-port 1/1 to ignore receive bits b, c, and d, enter the following commands:
voice-port 1/1ignore rx-b-bitignore rx-c-bitignore rx-d-bitRelated Commands
Manipulates the signaling bit-pattern for all voice signaling types.
Defines the transmit and receive bits for E&M and E&M Melcas voice signaling.
impedance
To specify the terminating impedance of an FXS voice port interface, use the impedance voice-port configuration command. Use the no form of this command to restore the default value. This command applies to analog voice ports only.
impedance {600c | 600r | 900c | 900r | complex1 | complex2}
no impedanceSyntax Description
Defaults
Impedance is 600 ohms resistive.
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Use the impedance command to specify the terminating impedance of an FXS voice-port interface. The impedance value selected needs to match the specifications from the specific telephony system to which it is connected.
If the impedance is set incorrectly, gain settings might not work correctly, and there will be a significant amount of echo generated (which could be masked if the echo-cancel command has been enabled).
A voice port must be shut down and reopened for a new impedance value to take effect.
Caveats
This command has no effect if it is entered for an FXO or E&M voice port (the impedance of FXO and E&M voice ports is not configurable). However, if the command is inadvertently entered for a nonconfigurable voice port, the show voice port command will return a false impedance value.
Examples
The following example configures an FXS voice port on the Cisco MC3810 for a terminating impedance of 900 ohms (complex):
voice-port 1/1impedance 900cinput gain
To configure a receive gain value, use the input gain voice-port configuration command. Use the no form of this command to disable the selected amount of inserted gain.
input gain dB gain
no input gain dB gainSyntax Description
dB gain
Receive dB gain to be inserted at the receiver side of the interface. Acceptable value is any integer from -6 to 14.
Defaults
No gain is inserted.
Command Mode
Voice-port configuration
Command History
Usage Guidelines
A system-wide loss plan must be implemented using both input gain and output attenuation commands. Other equipment (including PBXs) in the system must be taken into account when creating a loss plan. This default value for this command assumes that a standard transmission loss plan is in effect, meaning that normally, there must be -6dB attenuation between phones. Connections are implemented to provide -6dB of attenuation when the input gain and output attenuation commands are configured with the default value of 0.
You can't increase the gain of a signal going out into the PSTN, but you can decrease it. Therefore, if the voice level is too high, you can decrease the volume by either decreasing the input gain value or by increasing the output attenuation.
You can increase the gain of a signal coming in to the router. If the voice level is too low, you can increase the input gain.
Examples
The following example configures a 3-dB gain to be inserted at the receiver side of the interface in the Cisco MC3810:
port 1/1input gain 3Related Commands
non-linear
To enable non-linear processing in the echo canceller, use the non-linear voice-port configuration command. Use the no form of this command to disable non-linear processing.
non-linear
no non-linearSyntax Description
This command has no arguments or keywords.
Defaults
Non-linear processing is enabled for all voice-port types.
Command Mode
Voice-port configuration
Command History
Usage Guidelines
The function enabled by the non-linear command is also generally known as residual echo suppression. This command is associated with the echo canceller operation. The echo-cancel enable command must be enabled for the non-linear command to take effect. Use the non-linear command to shut off any signal if no near-end speech is detected.
Enabling the non-linear command normally improves performance, although some users might perceive truncation of consonants at the end of sentences when this command is enabled.
Examples
The following example enables non-linear call processing on the Cisco MC3810:
voice-port 1/1non-linearRelated Commands
Enables the cancellation of voice that is sent out the interface and is received back on the same interface.
operation
To select a cabling scheme for an E&M voice port, use the operation voice-port configuration command. Use the no form of this command to restore the default.
operation {2-wire | 4-wire}
no operation {2-wire | 4-wire}Syntax Description
Defaults
E&M ports are set for 2-wire operation.
Command Mode
Voice-port configuration
Command History
Usage Guidelines
The operation command only affects voice traffic. Signaling is independent of 2-wire versus 4-wire settings. If the wrong cable scheme is specified, the user might get voice traffic in only one direction.
Configuring the operation command on a voice port changes the operation of both voice ports on a voice interface card (VIC) in a Cisco 2600 or 3600 series router. In the Cisco MC3810 this command applies only to the analog voice module (AVM), and it affects the operation of the E&M voice port on each analog personality module (APM) individually.
This command is not applicable to FXS or FXO interfaces, because they are always 2-wire interfaces.
The voice port must be shut down and then opened again for the new value to take effect.
Examples
The following example specifies a 2-wire cabling scheme for an E&M port on the Cisco MC3810:
voice-port 1/1operation 2-wireRelated Commands
Specifies the type of signaling for a voice port.
Specifies the E&M interface type.
output attenuation
To configure a transmit attenuation value, use the output attenuation voice-port configuration command. Use the no form of this command to disable the selected output attenuation value.
output attenuation dB attenuation
no output attenuationSyntax Description
dB attenuation
Attenuation in dB at the transmit side of the interface. Acceptable value is any integer from 0 to 14.
Defaults
No transmit attenuation is inserted.
Command Mode
Voice-port configuration
Command History
Usage Guidelines
A system-wide loss plan must be implemented using both input gain and output attenuation commands. Other equipment (including PBXs) in the system must be taken into account when creating a loss plan. This default value for this command assumes that a standard transmission loss plan is in effect, meaning that there is 6 dB of attenuation between phones. Connections are implemented to provide 6 dB of attenuation when the input gain and output attenuation commands are configured with the default value of 0.
You cannot increase the gain of a signal transmitted to the PSTN, but you can decrease it. Therefore, if a voice level is too high, you can decrease the volume by either decreasing the receive gain or by increasing the transmit attenuation.
Examples
The following example on the Cisco MC3810 inserts 6 dB of attenuation on at the transmit side of the voice port:
voice-port 1/1output attenuation 6Related Commands
playout-delay
To tune the playout buffer on the Cisco MC3810 to accommodate packet jitter caused by switches in the WAN, use the playout-delay voice-port configuration command. Use the no form of this command to restore the default value.
playout-delay {maximum | nominal} milliseconds
no playout-delay {maximum | nominal} millisecondsSyntax Description
Defaults
The maximum playout delay is 160 milliseconds.
The nominal playout delay is 80 milliseconds.Command Mode
Voice-port configuration
Command History
Usage Guidelines
This command applies only to the Cisco MC3810.
Examples
The following example configures a nominal playout delay of 80 milliseconds and a maximum playout delay of 160 milliseconds on voice-port 1/1 on the Cisco MC3810:
voice-port 1/1playout-delay nominal 80playout-delay maximum 160ring cadence
To specify the ring cadence for an FXS voice port on the Cisco MC3810, use the ring cadence voice-port configuration command. Use the no form of this command to restore the default value.
ring cadence [on1 | off1] [on2 | off2] [on3 | off3] [on4 | off4] [on5 | off5] [on6 | off6]
no ring cadenceSyntax Description
Defaults
on2 off4 (default North American ring pattern)
Command Mode
Voice-port configuration
Command History
Usage Guidelines
This command applies only to the Cisco MC3810.
Examples
The following example configures the ring cadence for 0.4 second on and 0.2 second off on voice port 1/1 on the Cisco MC3810, enter the following:
voice-port 1/1 ring cadence on4 off2Related Commands
Specifies the ring frequency for an FXS voice port.
Specifies the number of rings for an FXO voice port.
ring frequency
To specify the ring frequency for a specified FXS voice port, use the ring frequency voice-port configuration command. Use the no form of this command to restore the default value for this command.
ring frequency frequency
no ring frequencySyntax Description
frequency
Ring frequency (Hertz) used in the FXS interface. Valid entries on the Cisco MC3810 are 20 and 30.
Defaults
20 Hz
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Use the ring frequency command to select a specific ring frequency for an FXS voice port. Use the no form of this command to reset the default value for this command. The ring frequency you select must match the connected equipment. If set incorrectly, the attached phone might not ring or might buzz. In addition, the ring frequency is usually country-dependent and you should take into account the appropriate ring frequency for your area before configuring this command.
This command does not affect ringback, which is the ringing a user hears when placing a remote call.
Examples
The following example configures the ring frequency on the Cisco MC3810 for 20 Hz:
voice-port 1/1ring frequency 20Related Commands
Specifies the ring cadence for an FXS voice port.
Specifies the number of rings for an FXO voice port.
ring number
To specify the number of rings for a specified FXO voice port, use the ring number voice-port configuration command. Use the no form of this command to restore the default value.
ring number number
no ring number numberSyntax Description
number
Number of rings detected before answering the call. Valid entries are numbers from 1 to 10. The default is 1.
Defaults
One ring
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Use the ring number command to set the maximum number of rings to be detected before answering a call over an FXO voice port. Use the no form of this command to reset the default value, which is one ring.
Normally, this command should be set to the default so that incoming calls are answered quickly. If you have other equipment available on the line to answer incoming calls, you might want to set the value higher to give the equipment sufficient time to respond. In that case, the FXO interface would answer if the equipment on line did not answer the incoming call in the configured number of rings.
This command is not applicable to FXS or E&M interfaces because they do not receive ringing to receive a call.
Examples
The following example on the Cisco MC3810 sets five rings as the maximum number of rings to be detected before closing a connection over this voice port:
voice-port 1/1ring number 5Related Commands
shutdown
To take the voice port offline, use the shutdown voice-port configuration command. Use the no form of this command to put the port back in service.
shutdown
no shutdownSyntax Description
This command has no arguments or keywords.
Command Mode
Voice-port configuration
Command History
Usage Guidelines
When you enter the shutdown command, all ports on the voice interface card are disabled. When you enter the no shutdown command, all ports on the voice interface card are enabled. A telephone connected to an interface will hear dead silence when a port is shut down.
Examples
The following example takes voice port 1/1 on the Cisco MC3810 series offline:
configure terminalvoice-port 1/1shutdownsignal
To specify the type of signaling for a voice port, use the signal voice-port configuration command. Use the no form of this command to restore the default value for this command. This command applies to analog voice ports only.
For FXO and FXS:
signal {loop-start | ground-start}
no signalFor E&M:
signal {wink-start | immediate | delay-dial}
no signalSyntax Description
Defaults
Loop-start for FXO and FXS interfaces; wink-start for E&M interfaces
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Configuring this command for an E&M voice port changes only the signal value for the selected voice port. In either case, the voice port must be shut down and then activated before the configured values will take effect.
Some PBXs will miss initial digits if the E&M voice port is configured for Immediate signaling. If this occurs, use Delay-Dial signaling instead. Some non-Cisco devices have a limited number of DTMF receivers. This type of equipment must delay the calling side until a DTMF receiver is available.
Examples
The following example configures ground start signaling on voice port 1/1:
configure terminalvoice-port 1/1signal ground-startRelated Commands
snmp trap link-status
To enable Simple Network Management Protocol (SNMP) trap messages to be generated when this voice port is brought up or down, use the snmp trap link-status voice-port configuration command. Use the no form of this command to stop generating these trap messages.
snmp trap link-status
no snmp trap link-statusSyntax Description
This command has no arguments or keywords.
Defaults
The default for this command is enabled.
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Use the snmp trap link-status command to enable SNMP trap messages (linkup and linkdown) to be generated whenever this voice port is brought online or offline.
If you are managing the equipment with an SNMP manager, this command should be enabled. Enabling link-status messages allows the SNMP manager to learn of a status change without polling the equipment. If you are not using an SNMP manager, this command should be disabled to avoid unnecessary network traffic.
Examples
The following example enables SNMP trap messages for voice port 1/1 on the Cisco MC3810:
voice-port 1/1snmp trap link-statsupervisory disconnect
To enable a supervisory disconnect signal on FXO ports, use the supervisory disconnect voice-port configuration command. Use the no form of this command to disable the supervisory disconnect signal.
supervisory disconnect
no supervisory disconnectSyntax Description
This command has no arguments or keywords.
Defaults
Enabled
Command Mode
Voice-port configuration
Command History
Usage Guidelines
This command indicates whether or not supervisory disconnect signaling is available on the FXO port. Supervisory disconnect signaling is a power denial from the switch lasting at least 350 milliseconds. When this condition is detected, the system interprets this as a disconnect indication from the switch and clears the call.
You should configure no supervisory disconnect on the voice port if there is no supervisory disconnect available from the switch.
Note
Examples
The following example configures supervisory disconnect on a Cisco MC3810 voice-port:
voice-port 1/1supervisory disconnecttimeouts initial
To configure the initial digit timeout value for a specified voice port, use the timeouts initial voice-port configuration command. Use the no form of this command to restore the default value.
timeouts initial seconds
no timeouts initial secondsSyntax Description
Defaults
10 seconds
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Use the timeouts initial command to specify the number of seconds the system will wait for the caller to input the first digit of the dialed digits. The timeouts initial timer is activated when the call is accepted and is deactivated when the caller inputs the first digit. If the configured timeout value is exceeded, the caller is notified through the appropriate tone and the call is terminated.
To disable the timeouts initial timer, set the seconds value to 0.
Examples
The following example sets the initial digit timeout value on the Cisco MC3810 to 10 seconds:
voice-port 1/1timeouts initial 10Related Commands
Configures the interdigit timeout value for a voice port.
Configures the timeout value for releasing voice ports.
timeouts interdigit
To configure the interdigit timeout value for a specified voice port, use the timeouts interdigit voice-port configuration command. Use the no form of this command to restore the default value.
timeouts interdigit seconds
no timeouts interdigit secondsSyntax Description
Defaults
10 seconds
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Use the timeouts interdigit command to specify the number of seconds the system will wait (after the caller has input the initial digit) for the caller to input a subsequent digit of the dialed digits. The timeouts interdigit timer is activated when the caller inputs a digit and restarted each time the caller inputs another digit until the destination address is identified. If the configured timeout value is exceeded before the destination address is identified, the caller is notified through the appropriate tone and the call is terminated.
To disable the timeouts interdigit timer, set the seconds value to 0.
Examples
The following example sets the interdigit timeout value on the Cisco MC3810 for 10 seconds:
voice-port 1/1timeouts interdigit 10Related Commands
Configures the initial-digit timeout value for a voice port.
Configures the timeout value for releasing voice ports.
timeouts wait-release
To configure the timeout value for releasing voice ports on the Cisco MC3810, use the timeouts wait-release voice-port configuration command. Use the no form of this command to restore the default value.
timeouts wait-release {seconds | infinity}
no timeouts wait-release {seconds | infinity}Syntax Description
Defaults
30 seconds
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Examples
The following example configures voice port 1/1 on the Cisco MC3810 to stay in the call-failure state for 180 seconds while a busy tone, reorder tone, or out-of-service tone is sent to the voice port.
voice-port 1/1timeouts wait-release 180Related Commands
Configures the initial-digit timeout value for a voice port.
Configures the interdigit timeout value for a voice port.
timing clear-wait
To indicate the minimum amount of time between the inactive seizure signal and the call being cleared for a specified voice port, use the timing clear-wait voice-port configuration command. Use the no form of this command to reset the default value.
timing clear-wait milliseconds
no timing clear-wait millisecondsSyntax Description
Defaults
400 milliseconds
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Examples
The following example configures the clear-wait duration on a Cisco MC3810 voice port to 300 milliseconds:
voice-port 1/1timing clear-wait 300Related Commands
timing delay-duration
To specify the delay signal duration for a voice port, use the timing delay-duration voice-port configuration command. Use the no form of this command to reset the default value.
timing delay-duration milliseconds
no timing delay-duration millisecondsSyntax Description
milliseconds
Delay signal duration for delay dial signaling, in milliseconds. Valid entries are numbers from 100 to 5000. Supported on E&M ports only.
Defaults
2000 milliseconds
Command Mode
Voice-port configuration
Command History
Usage Guidelines
The call direction for the timing delay-duration command is out.
Examples
The following example configures the delay signal duration on a Cisco MC3810 voice port to 3000 milliseconds:
voice-port 1/1timing delay-duration 3000Related Commands
timing delay-start
To specify the minimum delay time from outgoing seizure to outdial address for a voice port, use the timing delay-start voice-port configuration command. Use the no form of this command to reset the default value.
timing delay-start milliseconds
no timing delay-start millisecondsSyntax Description
milliseconds
Minimum delay time in milliseconds from outgoing seizure to outdial address. Valid entries are numbers from 20 to 2000. Supported on E&M ports only.
Defaults
150 milliseconds
Command Mode
Voice-port configuration
Command History
Usage Guidelines
The call direction for the timing delay-start command is outgoing.
Examples
The following example configures the delay-start duration on a Cisco MC3810 voice port to 250 milliseconds:
voice-port 1/1timing delay-start 250Related Commands
timing delay-with-integrity
To specify the duration of the wink pulse for the delay dial for a specified voice port on the Cisco MC3810, use the timing delay-with-integrity voice-port configuration command. Use the no form of this command to restore the default value.
timing delay-with-integrity milliseconds
no delay-with-integrity millisecondsSyntax Description
milliseconds
Duration of the wink pulse for the delay dial, in milliseconds. Valid entries are numbers from 0 to 5000. Supported on E&M ports only.
Defaults
0 milliseconds
Command Mode
Voice-port configuration
Command History
Examples
The following example configures the duration of the wink pulse for the delay dial on a Cisco MC3810 voice port to 10 milliseconds:
voice-port 1/1timing delay-with-integrity 10Related Commands
timing dialout-delay
To specify the dialout delay for the sending digit on a specified voice port on the Cisco MC3810, use the timing dialout-delay voice-port configuration command. Use the no form of this command to reset the default value.
timing dialout-delay milliseconds
no timing dialout-delay millisecondsSyntax Description
milliseconds
Dialout delay in milliseconds for the sending digit or cut-through on an FXO trunk or an E&M immediate trunk. Valid entries are 100 to 5000.
Defaults
300 milliseconds
Command Mode
Voice-port configuration
Command History
Usage Guidelines
This command applies to only the Cisco MC3810.
Examples
The following example configures the dialout delay on a Cisco MC3810 voice port to 350 milliseconds:
voice-port 1/1timing dialout-delay 350Related Commands
timing digit
To specify the DTMF digit signal duration for a specified voice port, use the timing digit voice-port configuration command. Use the no form of this command to reset the default value.
timing digit milliseconds
no timing digit millisecondsSyntax Description
milliseconds
The DTMF digit signal duration in milliseconds. Valid entries are numbers 50 to 100. Supported on FXO, FXS and E&M ports.
Defaults
100 milliseconds
Command Mode
Voice-port configuration
Command History
Usage Guidelines
The call signal direction for the timing digit command is outgoing.
Examples
The following example configures the DTMF digit signal duration on a Cisco MC3810 voice port to 50 milliseconds:
voice-port 1/1timing digit 50Related Commands
timing guard-out
To specify the guard-out duration of an FXO voice port, use the timing guard-out voice-port configuration command. Use the no form of this command to restore the default value.
timing guard-out milliseconds
no timing guard-out millisecondsSyntax Description
Defaults
2000 milliseconds
Command Mode
Voice-port configuration
Command History
Usage Guidelines
This command is supported on FXO voice ports only
Examples
The following example configures the timing guard-out duration on a Cisco MC3810 voice port to 1000 milliseconds:
voice-port 1/1timing guard-out 1000timing interdigit
To specify the DTMF inter-digit duration for a specified voice port, use the timing interdigit voice-port configuration command. Use the no form of this command to reset the default value.
timing interdigit milliseconds
no timing interdigit millisecondsSyntax Description
milliseconds
DTMF inter-digit duration in milliseconds. Valid entries are numbers 50 to 500. Supported on FXO, FXS and E&M ports.
Defaults
100 milliseconds
Command Mode
Voice-port configuration
Command History
Usage Guidelines
The call signal direction for the timing interdigit command is outgoing.
Examples
The following example configures the DTMF inter-digit duration on a Cisco MC3810 voice port to 150 milliseconds:
voice-port 1/1timing interdigit 150Related Commands
timing percentbreak
To specify the percentage of the break period for dialing pulses for a specified voice port on the Cisco MC3810, use the timing percentbreak voice-port configuration command. Use the no form of this command to reset the default value.
timing percentbreak percent
no timing percentbreak percentSyntax Description
percent
Percentage of the break period for dialing pulses. Valid entries are numbers 20 to 80. Supported on FXO and E&M ports only.
Defaults
50 percent
Command Mode
Voice-port configuration
Command History
Examples
The following example configures the break period percentage on a Cisco MC3810 voice port to 30 milliseconds:
voice-port 1/1timing percentbreak 30Related Commands
Configures the pulse dialing rate for a voice port.
Configures the pulse inter-digit timing for a voice port.
timing pulse
To specify the pulse dialing rate for a specified voice port, use the timing pulse voice-port configuration command. Use the no form of this command to reset the default value.
timing pulse pulses-per-second
no timing pulse pulses-per-secondSyntax Description
pulses-per-second
Pulse dialing rate, in pulses per second. Valid entries are numbers 10 to 20. Supported on FXO and E&M ports only.
Defaults
20 pulses per second
Command Mode
Voice-port configuration
Command History
Usage Guidelines
The call signal direction for the timing pulse command is outgoing.
Examples
The following example configures the pulse dialing rate on a Cisco MC3810 voice port to 15 pulses per second:
voice-port 1/1timing pulse 15Related Commands
Configures the percentage of the break period for dialing pulses on a voice port.
Configures the pulse inter-digit timing for a voice port.
timing pulse-interdigit
To specify the pulse inter-digit timing for a specified voice port, use the timing pulse-interdigit voice-port configuration command. Use the no form of this command to reset the default value.
timing pulse-interdigit milliseconds
no timing pulse-interdigit millisecondsSyntax Description
milliseconds
Pulse dialing inter-digit timing in milliseconds. Valid entries are numbers 100 to 1000. Supported on FXO and E&M ports only.
Defaults
500 milliseconds
Command Mode
Voice-port configuration
Command History
Usage Guidelines
The call signal direction for the timing pulse-interdigit command is outgoing.
Examples
The following example configures the pulse-dialing inter-digit timing on a Cisco MC3810 voice port to 300 milliseconds:
voice-port 1/1timing pulse-interdigit 300Related Commands
Configures the percentage of the break period for dialing pulses on a voice port.
Configures the pulse dialing rate for a voice port.
timing wink-duration
To specify the maximum wink signal duration for a voice port, use the timing wink-duration voice-port configuration command. Use the no form of this command to restore the default value.
timing wink-duration milliseconds
no timing wink-duration millisecondsSyntax Description
milliseconds
Maximum wink signal duration in milliseconds for a wink-start signal. Valid entries are numbers 100 to 400. Supported on E&M ports only.
Defaults
200 milliseconds
Command Mode
Voice-port configuration
Command History
Usage Guidelines
The call signal direction for the timing wink-duration command is outgoing.
Examples
The following example configures the wink signal duration on a Cisco MC3810 voice port to 300 milliseconds:
voice-port 1/1timing wink-duration 300Related Commands
timing wink-wait
To specify the maximum wink-wait duration for a voice port, use the timing wink-wait voice-port configuration command. Use the no form of this command to reset the default value.
timing wink-wait milliseconds
no timing wink-wait millisecondsSyntax Description
milliseconds
Maximum wink-wait duration in milliseconds for a wink start signal. Valid entries are numbers 100 to 5000. Supported on E&M ports only
Defaults
200 milliseconds
Command Mode
Voice-port configuration
Command History
Usage Guidelines
The call signal direction for the timing wink-wait command is out.
Examples
The following example configures the wink-wait duration on a Cisco MC3810 voice port to 300 milliseconds:
voice-port 1/1timing wink-wait 300Related Commands
type
To specify the E&M interface type, use the type voice-port configuration command. Use the no form of this command to reset the default value.
type {1 | 2 | 3 | 5}
no typeSyntax Description
Defaults
Lead configuration type is 1.
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Use the type command to specify the E&M interface for a particular voice port. With type 1, the tie-line equipment generates the E-signal to the PBX type grounding the E-lead. The tie-line equipment detects the M-signal by detecting current flow to ground. If you select 1, a common ground must exist between the line equipment and the PBX.
With type 2, the interface requires no common ground between the equipment, thereby avoiding ground loop noise problems. The E-signal is generated toward the PBX by connecting it to SG. The M-signal is indicated by the PBX connecting it to SB. While Type 2 interfaces do not require a common ground, they do have the tendency to inject noise into the audio paths because they are asymmetrical with respect to the current flow between devices.
Note
With type 3, the interface operates the same as Type 1 interfaces with respect to the E-signal. The M-signal, however, is indicated by the PBX connecting it to SB on assertion and alternately connecting it to SG during inactivity. If you select 3, a common ground must be shared between equipment.
With type 5, the Type 5 line equipment indicates E-signal to the PBX by grounding the E-lead. The PBX indicates M-signal by grounding the M-lead. A Type 5 interface is quasi-symmetrical in that while the line is up, current flow is more or less equal between the PBX and the line equipment, but noise injection is a problem.
Examples
The following example selects Type 3 as the interface type for your voice port on the Cisco MC3810:
voice-port 1/1type 3Related Commands
Selects a cabling scheme for an E&M analog voice port.
Specifies the signaling type for a voice port.
vad
To enable voice activity detection (VAD) for the calls using this voice port, use the vad voice-port configuration command. Use the no form of this command to disable VAD.
vad
no vadSyntax Description
This command has no arguments or keywords.
Defaults
VAD is not enabled
Command Mode
Voice-port configuration
Command History
Usage Guidelines
Use the vad command to enable voice activity detection. With VAD, silence is not transmitted over the network, only audible speech. If you enable VAD, the sound quality will be slightly degraded but the connection will monopolize much less bandwidth. If you use the no form of this command, VAD is disabled on the voice-port.
Examples
The following example enables VAD on voice-port 1/1:
voice-port 1/1vadRelated Commands
Generates background noise to fill silent gaps during calls if VAD is activated.
voice confirmation-tone
To enable the two-beep confirmation tone for PLAR or PLAR Off Premises eXtension (OPX) connections, use the voice confirmation-tone voice-port command. Use the no form of this command to disable the two-beep confirmation tone.
voice confirmation-tone
no voice confirmation-toneSyntax Description
This command has no arguments or keywords.
Defaults
The two-beep confirmation tone is enabled on the PLAR or PLAR OPX connection.
Command Mode
Voice-port configuration
Command History
11.3(1) MA5
This command was first introduced as the voice-confirmation-tone-disable command.
12.0(3) T
This command was changed to voice confirmation-tone.
Usage Guidelines
Use this command to enable the two-beep confirmation tone that a caller hears when picking up the handset for PLAR and PLAR OPX connections. This command is only valid if the voice port connection command is set to PLAR or PLAR OPX.
Examples
The following example enables the two-beep confirmation tone on voice port 1/1 on the Cisco MC3810:
voice-port 1/1connection plar-opxvoice confirmation-toneRelated Commands
voice-port busyout
To place all voice ports associated with a serial or ATM interface into a busyout state, use the voice-port busyout interface configuration command. To remove the busyout state on the voice ports associated with this interface, use the no form of this command.
voice-port busyout
no voice-port busyout
Syntax Description
This command has no arguments or keywords.
Defaults
The voice port(s) on the interface are not in busyout state.
Command Mode
Interface configuration
Command History
Usage Guidelines
This command is supported on the Cisco MC3810 only.
This command busies out all voice port associated with the interface, except any voice ports configured to busyout under specific conditions using the busyout monitor and busyout-seized commands.
Examples
The following example turns the voice-port(s) associated with serial interface 1 into busyout state:
interface serial 1voice-port busyoutThe following example turns the voice-port(s) associated with ATM interface 0 into busyout state:
interface atm 0voice-port busyoutRelated Commands
