Voice Port Configuration Guide, Cisco IOS Release 15M&T
Verifying Analog and Digital Voice-Port Configurations
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Verifying Analog and Digital Voice-Port Configurations

This chapter describes some basic procedures and specific CLI commands you can use to verify the set up and configuration of the analog and digital voice ports on the routers in your voice network.

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/​go/​cfn. An account on Cisco.com is not required.

Information About Verifying Voice-Port Configurations

After configuring the voice ports on your router, there are two simple verifications you can use to check the operation of the telephony handset. There are also eight CLI commands you can use to verify proper operation of the configuration.

How to Verify Voice-Port Configurations

To verify the operability of the analog and digital voice-port configurations on your voice network, complete the following tasks.

SUMMARY STEPS

    1.    Check for a dial tone.

    2.    Check for Dual-Tone Multifrequency (DTMF) detection.

    3.    show voice port summary

    4.    show voice port

    5.    show running-config

    6.    show controller

    7.    show voice dsp

    8.    show voice call summary

    9.    show call active voice

    10.    show call history voice


DETAILED STEPS
    Step 1   Check for a dial tone.

    Pick up the handset of an attached telephony device and check for a dial tone.

    Step 2   Check for Dual-Tone Multifrequency (DTMF) detection.

    If you have dial tone, check for DTMF detection. If the dial tone stops when you dial a digit, then the voice port is probably configured properly.

    Step 3   show voice port summary

    Use this command to identify the port numbers of voice interfaces installed in your router. For examples of the output, see the "Examples" section.

    Step 4   show voice port

    Use this command to verify voice-port parameter settings. Refer to the table below for the appropriate syntax for your platform. For sample output, see the show voice port Command Examples.

    Table 1 Show Voice Port Command Syntax

    Platform

    Voice Port Type

    Command Syntax

    Cisco 1750

    Analog

    show voice port [slot / port | summary]

    Cisco 2600 series Cisco 3600 series Cisco 3700 series

    Analog

    show voice port [slot / port | summary]

    Digital

    show voice port [slot / port : ds0-group-number | summary]

    Cisco MC3810

    Analog

    show voice port [slot / port | summary]

    Digital

    show voice port [slot : ds0-group-number | summary]

    Cisco AS5300

    Digital

    show voice port [controller :{ds0-group-number | D}] [summary]

    Cisco AS5350 Cisco AS5400 Cisco AS5850

    Digital

    show voice port [slot/controller :{ds0-group-number | D}] [summary]

    Cisco AS5800

    Digital

    show voice port {shelf / slot/port : ds0-group-number}

    Cisco 7200 series

    Digital

    show voice port {slot / port-adapter : ds0-group-number}

    Cisco 7500 series

    Digital

    show voice port {slot / port-adapter / slot : ds0-group-number}

    Step 5   show running-config

    Use this command to verify the codec complexity setting for digital T1/E1 connections. If medium complexity is specified for the voice card, the codec complexity command is not displayed. If high complexity is specified, the codec complexity high command is displayed. The following example shows output when high complexity is specified:



    Example:
    Router# show running-config
.
.
.
hostname router-alpha 
 
voice-card 0
 codec complexity high 
.
.
.
    Step 6   show controller

    Use this command to verify that the digital T1/E1 controller is up and that no alarms have been reported, and to display information about clock sources and other controller settings. For output examples, see the show controller Command Examples.



    Example:
    Router# show controller
 {t1
 | e1
} 
controller-number
    Step 7   show voice dsp

    Use this command to display voice-channel configuration information for all DSP channels. For output examples, see the show voice dsp Command Examples.



    Example:
    Router# show voice dsp
    Step 8   show voice call summary

    Use this command to verify the call status for all voice ports. For output examples, see the show voice call summary Command Examples.



    Example:
    Router# show voice call summary
    Step 9   show call active voice

    Use this command to display the contents of the active call table, which shows all of the calls currently connected through the router or concentrator. For output examples, see the show call active voice Command Example.



    Example:
    Router# show call active voice
    Step 10   show call history voice

    Use this command to display the contents of the call history table. To limit the display to the most recent calls connected through this router, use the last keyword and define the number of calls to display with the numberargument. To limit the display to a shortened version of the call history table, use the brief keyword. For output examples, see the show call history voice Command Example.



    Example:
    Router# show call history voice 
[last
 | number
 | brief

    Examples

    This section contains output examples for the following commands on different platforms and for different configurations:

    show voice port summary Command Examples

    Cisco 3640 Router Analog Voice Port

    The following output is from a Cisco 3640 router:

    Router# show voice port summary
                                  IN      OUT
PORT   CH SIG-TYPE   ADMIN OPER STATUS   STATUS   EC
====== == ========== ===== ==== ======== ======== ==
2/0/0  -- e&m-wnk    up    dorm idle     idle     y 
2/0/1  -- e&m-wnk    up    dorm idle     idle     y 
2/1/0  -- fxs-ls     up    dorm on-hook  idle     y 
2/1/1  -- fxs-ls     up    dorm on-hook  idle     y
    Cisco MC3810 Digital Voice Port

    The following output is from a Cisco MC3810:

    Router# show voice port summary
                                  IN      OUT
PORT   CH SIG-TYPE   ADMIN OPER STATUS   STATUS   EC
====== == ========== ===== ==== ======== ======== ==
0:17   18 fxo-ls     down  down idle     on-hook  y
0:18   19 fxo-ls     up    dorm idle     on-hook  y
0:19   20 fxo-ls     up    dorm idle     on-hook  y
0:20   21 fxo-ls     up    dorm idle     on-hook  y
0:21   22 fxo-ls     up    dorm idle     on-hook  y
0:22   23 fxo-ls     up    dorm idle     on-hook  y
0:23   24 e&m-imd    up    dorm idle     idle     y
1/1    -- fxs-ls     up    dorm on-hook  idle     y
1/2    -- fxs-ls     up    dorm on-hook  idle     y
1/3    -- e&m-imd    up    dorm idle     idle     y
1/4    -- e&m-imd    up    dorm idle     idle     y
1/5    -- fxo-ls     up    dorm idle     on-hook  y
1/6    -- fxo-ls     up    dorm idle     on-hook  y

    show voice port Command Examples

    Cisco 3600 Series Router Analog EandM Voice Port

    The following output is from a Cisco 3600 series router analog E&M voice port:

    Router# show voice port
 
1/0
E&M Slot is 1, Sub-unit is 0, Port is 0
 Type of VoicePort is E&M
 Operation State is unknown
 Administrative State is unknown
 The Interface Down Failure Cause is 0
 Alias is NULL
 Noise Regeneration is disabled
 Non Linear Processing is disabled
 Music On Hold Threshold is Set to 0 dBm
 In Gain is Set to 0 dB
 Out Attenuation is Set to 0 dB
 Echo Cancellation is disabled
 Echo Cancel Coverage is set to 16ms
 Connection Mode is Normal
 Connection Number is 
 Initial Time Out is set to 0 s
 Interdigit Time Out is set to 0 s
 Analog Info Follows:
 Region Tone is set for northamerica
 Currently processing none
 Maintenance Mode Set to None (not in mtc mode)
 Number of signaling protocol errors are 0
 
 Voice card specific Info Follows:
 Signal Type is wink-start
 Operation Type is 2-wire
 Impedance is set to 600r Ohm
 E&M Type is unknown
 Dial Type is dtmf
 In Seizure is inactive
 Out Seizure is inactive
 Digit Duration Timing is set to 0 ms
 InterDigit Duration Timing is set to 0 ms
 Pulse Rate Timing is set to 0 pulses/second
 InterDigit Pulse Duration Timing is set to 0 ms
 Clear Wait Duration Timing is set to 0 ms
 Wink Wait Duration Timing is set to 0 ms
 Wink Duration Timing is set to 0 ms
 Delay Start Timing is set to 0 ms
 Delay Duration Timing is set to 0 ms
    Cisco 3600 Series Router Analog FXS Voice Port

    The following output is from a Cisco 3600 series router analog Foreign Exchange Service (FXS) voice port:

    Router# show voice port
 1
/2
Voice port 1/2 Slot is 1, Port is 2
 Type of VoicePort is FXS
 Operation State is UP
 Administrative State is UP
 No Interface Down Failure
 Description is not set
 Noise Regeneration is enabled
 Non Linear Processing is enabled
 In Gain is Set to 0 dB
 Out Attenuation is Set to 0 dB
 Echo Cancellation is enabled
 Echo Cancel Coverage is set to 8 ms
 Connection Mode is normal
 Connection Number is not set
 Initial Time Out is set to 10 s
 Interdigit Time Out is set to 10 s
 Coder Type is g729ar8
 Companding Type is u-law
 Voice Activity Detection is disabled
 Ringing Time Out is 180 s
 Wait Release Time Out is 30 s
 Nominal Playout Delay is 80 milliseconds
 Maximum Playout Delay is 160 milliseconds
 Analog Info Follows:
 Region Tone is set for northamerica
 Currently processing Voice
 Maintenance Mode Set to None (not in mtc mode)
 Number of signaling protocol errors are 0
 Impedance is set to 600r Ohm
 Analog interface A-D gain offset = -3 dB 
 Analog interface D-A gain offset = -3 dB 
 Voice card specific Info Follows:
 Signal Type is loopStart
 Ring Frequency is 20 Hz
 Hook Status is On Hook
 Ring Active Status is inactive
 Ring Ground Status is inactive
 Tip Ground Status is active
 Digit Duration Timing is set to 100 ms
 InterDigit Duration Timing is set to 100 ms
 Ring Cadence are [20 40] * 100 msec
 InterDigit Pulse Duration Timing is set to 500 ms
    Cisco 3600 Series Router Digital EandM Voice Port

    The following output is from a Cisco 3600 series router digital E&M voice port:

    Router# show voice port 1
/0:1
 
receEive and transMit Slot is 1, Sub-unit is 0, Port is 1
 Type of VoicePort is E&M
 Operation State is DORMANT
 Administrative State is UP
 No Interface Down Failure
 Description is not set
 Noise Regeneration is enabled
 Non Linear Processing is enabled
 Music On Hold Threshold is Set to -38 dBm
 In Gain is Set to 0 dB
 Out Attenuation is Set to 0 dB
 Echo Cancellation is enabled
 Echo Cancel Coverage is set to 8 ms
 Connection Mode is normal
 Connection Number is not set
 Initial Time Out is set to 10 s
 Interdigit Time Out is set to 10 s
 Region Tone is set for US
    Cisco AS5300 T1 CAS Voice Port

    The following output is from a Cisco AS5300 T1 channel-associated signaling (CAS) voice port:

    Router# show voice port
 
DS0 Group 1:0 - 1:0
 Type of VoicePort is CAS
 Operation State is DORMANT
 Administrative State is UP
 No Interface Down Failure
 Description is not set
 Noise Regeneration is enabled
 Non Linear Processing is enabled
 Music On Hold Threshold is Set to -38 dBm
 In Gain is Set to 0 dB
 Out Attenuation is Set to 0 dB
 Echo Cancellation is enabled
 Echo Cancel Coverage is set to 8 ms
 Playout-delay Mode is set to default
 Playout-delay Nominal is set to 60 ms
 Playout-delay Maximum is set to 200 ms
 Connection Mode is normal
 Connection Number is not set
 Initial Time Out is set to 10 s
 Interdigit Time Out is set to 10 s
 Call-Disconnect Time Out is set to 60 s
 Ringing Time Out is set to 180 s
 Companding Type is u-law
 Region Tone is set for US
 Wait Release Time Out is 30 s
 Station name None, Station number None
 
 Voice card specific Info Follows:
 
 DS0 channel specific status info:
                                IN      OUT
    PORT   CH SIG-TYPE   OPER STATUS   STATUS    TIP     RING
    Cisco 7200 Series Router Digital EandM Voice Port

    The following output is from a Cisco 7200 series router digital E&M voice port:

    Router# show voice port 1
/0:1
receEive and transMit Slot is 1, Sub-unit is 0, Port is 1  << voice-port 1/0:1
 Type of VoicePort is E&M
 Operation State is DORMANT
 Administrative State is UP
 No Interface Down Failure
 Description is not set
 Noise Regeneration is enabled
 Non Linear Processing is enabled
 Music On Hold Threshold is Set to -38 dBm
 In Gain is Set to 0 dB
 Out Attenuation is Set to 0 dB
 Echo Cancellation is enabled
 Echo Cancel Coverage is set to 8 ms
 Connection Mode is normal
 Connection Number is not set
 Initial Time Out is set to 10 s
 Interdigit Time Out is set to 10 s
 Region Tone is set for US

    show controller Command Examples

    Cisco 3600 Series Router T1 Controller

    The following output is from a Cisco 3600 series router with a T1 controller:

    Router# show controller T1 1/1/0
T1 1/0/0 is up.
  Applique type is Channelized T1
  Cablelength is long gain36 0db
  No alarms detected.
  alarm-trigger is not set
  Framing is ESF, Line Code is B8ZS, Clock Source is Line.
  Data in current interval (180 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
    Cisco MC3810 E1 Controller

    The following output is from a Cisco MC3810 with an E1 controller:

    Router# show controller e1 1/0
E1 1/0 is up.
  Applique type is Channelized E1
  Cablelength is short 133
  Description: E1 WIC card Alpha
  No alarms detected.
  Framing is CRC4, Line Code is HDB3, Clock Source is Line Primary.
  Data in current interval (1 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
    Cisco AS5800 T1 Controller

    The following output is from a Cisco AS5800 with a T1 controller:

    Router# show controller t1 2
 T1 2 is up.
   No alarms detected.
   Version info of slot 0:  HW: 2, Firmware: 16, PLD Rev: 0
 
 Manufacture Cookie Info:
  EEPROM Type 0x0001, EEPROM Version 0x01, Board ID 0x42,
  Board Hardware Version 1.0, Item Number 73-2217-4,
  Board Revision A0, Serial Number 06467665,
  PLD/ISP Version 0.0, Manufacture Date 14-Nov-1997.
 
   Framing is ESF, Line Code is B8ZS, Clock Source is Internal.
   Data in current interval (269 seconds elapsed):
    0 Line Code Violations, 0 Path Code Violations
      0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
      0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

    show voice dsp Command Examples

    Digital Voice Port on a Cisco 3640

    The following output is from a Cisco 3640 router when a digital voice port is configured:

    Router# show voice dsp
TYPE DSP CH CODEC    VERS STATE STATE   RST AI PORT    TS ABORT   TX/RX-PAK-CNT
==== === == ======== ==== ===== ======= === == ======= == ===== ===============
C549 010 00 g729r8    3.3 busy  idle      0  0 1/015   1     0     67400/85384
         01 g729r8     .8 busy  idle      0  0 1/015   7     0     67566/83623
         02 g729r8        busy  idle      0  0 1/015  13     0     65675/81851
         03 g729r8        busy  idle      0  0 1/015  20     0     65530/83610
C549 011 00 g729r8    3.3 busy  idle      0  0 1/015   2     0     66820/84799
         01 g729r8     .8 busy  idle      0  0 1/015   8     0     59028/66946
         02 g729r8        busy  idle      0  0 1/015  14     0     65591/81084
         03 g729r8        busy  idle      0  0 1/015  21     0     66336/82739
C549 012 00 g729r8    3.3 busy  idle      0  0 1/015   3     0     59036/65245
         01 g729r8     .8 busy  idle      0  0 1/015   9     0     65826/81950
         02 g729r8        busy  idle      0  0 1/015  15     0     65606/80733
         03 g729r8        busy  idle      0  0 1/015  22     0     65577/83532
C549 013 00 g729r8    3.3 busy  idle      0  0 1/015   4     0     67655/82974
         01 g729r8     .8 busy  idle      0  0 1/015  10     0     65647/82088
         02 g729r8        busy  idle      0  0 1/015  17     0     66366/80894
         03 g729r8        busy  idle      0  0 1/015  23     0     66339/82628
C549 014 00 g729r8    3.3 busy  idle      0  0 1/015   5     0     68439/84677
         01 g729r8     .8 busy  idle      0  0 1/015  11     0     65664/81737
         02 g729r8        busy  idle      0  0 1/015  18     0     65607/81820
         03 g729r8        busy  idle      0  0 1/015  24     0     65589/83889
C549 015 00 g729r8    3.3 busy  idle      0  0 1/015   6     0     66889/83331
         01 g729r8     .8 busy  idle      0  0 1/015  12     0     65690/81700
         02 g729r8        busy  idle      0  0 1/015  19     0     66422/82099
         03 g729r8        busy  idle      0  0 1/015  25     0     65566/83852
Router# show voice dsp
TYPE DSP CH CODEC    VERS STATE STATE   RST AI PORT    TS ABORT   TX/RX-PAK-CNT
==== === == ======== ==== ===== ======= === == ======= == ===== ===============
C549 007 00 {medium}  3.3 IDLE  idle      0  0 1/0:1    4     0             0/0
                      .13
C549 008 00 {medium}  3.3 IDLE  idle      0  0 1/0:1    5     0             0/0
                      .13
C549 009 00 {medium}  3.3 IDLE  idle      0  0 1/0:1    6     0             0/0
                      .13
C549 010 00 {medium}  3.3 IDLE  idle      0  0 1/0:1    7     0             0/0
                      .13
C549 011 00 {medium}  3.3 IDLE  idle      0  0 1/0:1    8     0             0/0
                      .13
C549 012 00 {medium}  3.3 IDLE  idle      0  0 1/0:1    9     0             0/0
                      .13
C542 001 01 g711ulaw  3.3 IDLE  idle      0  0 2/0/0          0         512/519
                      .13
C542 002 01 g711ulaw  3.3 IDLE  idle      0  0 2/0/1          0         505/502
                      .13
C542 003 01 g711alaw  3.3 IDLE  idle      0  0 2/1/0          0     28756/28966
                      .13
C542 004 01 g711ulaw  3.3 IDLE  idle      0  0 2/1/1          0         834/838
                      .13

    show voice call summary Command Examples

    Cisco MC3810 Analog Voice Port

    The following output is from a Cisco MC3810:

    Router# show voice call summary
PORT      CODEC    VAD VTSP STATE            VPM STATE
========= ======== === ===================== ========================
1/1       g729r8    y  S_CONNECT             FXSLS_CONNECT            
1/2       -         -  -                     FXSLS_ONHOOK             
1/3       -         -  -                     EM_ONHOOK                
1/4       -         -  -                     EM_ONHOOK                
1/5       -         -  -                     FXOLS_ONHOOK             
1/6       -         -  -                     FXOLS_ONHOOK
    Cisco 3600 Series Router Digital Voice Port

    The following output is from a Cisco 3600 series router:

    Router# show voice call summary
PORT      CODEC    VAD VTSP STATE            VPM STATE
========= ======== === ===================== ========================
1/015.1  g729r8    y  S_CONNECT             S_TSP_CONNECT            
1/015.2  g729r8    y  S_CONNECT             S_TSP_CONNECT            
1/015.3  g729r8    y  S_CONNECT             S_TSP_CONNECT            
1/015.4  g729r8    y  S_CONNECT             S_TSP_CONNECT            
1/015.5  g729r8    y  S_CONNECT             S_TSP_CONNECT            
1/015.6  g729r8    y  S_CONNECT             S_TSP_CONNECT            
1/015.7  g729r8    y  S_CONNECT             S_TSP_CONNECT            
1/015.8  g729r8    y  S_CONNECT             S_TSP_CONNECT            
1/015.9  g729r8    y  S_CONNECT             S_TSP_CONNECT            
1/015.10 g729r8    y  S_CONNECT             S_TSP_CONNECT            
1/015.11 g729r8    y  S_CONNECT             S_TSP_CONNECT            
1/015.12 g729r8    y  S_CONNECT             S_TSP_CONNECT

    show call active voice Command Example

    Cisco 7200 Series Router

    The following output is from a Cisco 7200 series router:

    Router# show call active voice
GENERIC:
SetupTime=94523746 ms
Index=448
PeerAddress=##73072
PeerSubAddress=
PeerId=70000
PeerIfIndex=37
LogicalIfIndex=0
ConnectTime=94524043
DisconectTime=94546241
CallOrigin=1
ChargedUnits=0
InfoType=2
TransmitPackets=6251
TransmitBytes=125020
ReceivePackets=3300
ReceiveBytes=66000
VOIP:
ConnectionId[0x142E62FB 0x5C6705AF 0x0 0x385722B0]
RemoteIPAddress=172.16.235.18
RemoteUDPPort=16580
RoundTripDelay=29 ms
SelectedQoS=best-effort
tx_DtmfRelay=inband-voice
SessionProtocol=cisco
SessionTarget=ipv4:172.16.235.18
OnTimeRvPlayout=63690
GapFillWithSilence=0 ms
GapFillWithPrediction=180 ms
GapFillWithInterpolation=0 ms
GapFillWithRedundancy=0 ms
HiWaterPlayoutDelay=70 ms
LoWaterPlayoutDelay=30 ms
ReceiveDelay=40 ms
LostPackets=0 ms
EarlyPackets=1 ms
LatePackets=18 ms
VAD = disabled
CoderTypeRate=g729r8
CodecBytes=20
cvVoIPCallHistoryIcpif=0
SignalingType=cas

    show call history voice Command Example

    Cisco 7200 Series Router

    The following output is from a Cisco 7200 series router: 

    Router# show call history voice
GENERIC:
SetupTime=94893250 ms
Index=450
PeerAddress=##52258
PeerSubAddress=
PeerId=50000
PeerIfIndex=35
LogicalIfIndex=0
DisconnectCause=10
DisconnectText=normal call clearing.
ConnectTime=94893780
DisconectTime=95015500
CallOrigin=1
ChargedUnits=0
InfoType=2
TransmitPackets=32258
TransmitBytes=645160
ReceivePackets=20061
ReceiveBytes=401220
VOIP:
ConnectionId[0x142E62FB 0x5C6705B3 0x0 0x388F851C]
RemoteIPAddress=172.16.235.18
RemoteUDPPort=16552
RoundTripDelay=23 ms
SelectedQoS=best-effort
tx_DtmfRelay=inband-voice
SessionProtocol=cisco
SessionTarget=ipv4:172.16.235.18
OnTimeRvPlayout=398000
GapFillWithSilence=0 ms
GapFillWithPrediction=1440 ms
GapFillWithInterpolation=0 ms
GapFillWithRedundancy=0 ms
HiWaterPlayoutDelay=97 ms
LoWaterPlayoutDelay=30 ms
ReceiveDelay=49 ms
LostPackets=1 ms
EarlyPackets=1 ms
LatePackets=132 ms
VAD = disabled
CoderTypeRate=g729r8
CodecBytes=20
cvVoIPCallHistoryIcpif=0