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Configuring Voice Ports

Release 12.0(7)XK

Validation Tips

You can check the validity of your voice-port conﬁguration by performing the following tasks:

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

• If you have dial tone, check for DTMF detection. If the dial tone stops when you dial a digit, the

voice port is most likely conﬁgured properly.

• Use the show voice port command to view the voice-port conﬁguration.

• Use the show voice dsp command to view the current status of all DSP voice channels.

• Use the show voice call summary command to view the call status for all voice ports.

Troubleshooting Tips

If you are havingtrouble connecting a call and you suspect the problem is associated with voice-port

conﬁguration, you can try to resolve the problem by performing the following tasks:

• Ping the associated IP address to conﬁrm connectivity. If you cannot successfully ping your

destination, refer to the Cisco IOS 12.0 Network Protocols Conﬁguration Guide, Part 1.

• Use the show voice port command to make sure that the port is enabled. If the port is ofﬂine,

enter the no shutdown command.

• Make sure that the values pertaining to your PBX setup, such as timing and type, are correct.

• Check to see if the analog personality module is correctly installed. For more information, refer

to the Cisco MC3810 Multiservice Concentrator Hardware Installation Guide.

Fine-Tuning E&M Voice Ports

Depending on the speciﬁcs of your particular network, you may need to adjust voice parameters

involving timing, input gain, and output attenuation. The commands for these parameters are

referred to as voice-port tuning commands.

Note In most cases, the default values for voice-port tuning commands will be sufﬁcient.

Task List

To ﬁne tune E&M voice ports, perform the following tasks:

1 Perform the voice-port tuning procedure for the voice port.

2 Verify the conﬁguration.

3 Troubleshoot and correct any conﬁguration errors.

Voice-Port Tuning Procedure

To ﬁne-tune E&M voice ports, perform the following steps, beginning in privileged EXEC mode.

Commands apply to both analog and digital voice ports unless otherwise indicated.

Note After you change voice-port parameters, Cisco recommends that you cycle the port by

entering the shutdown and no shutdown commands.

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Cisco MC3810 Guía de instalación Pagina 24