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New Member

VIC-2BRI card voice quality problems

Has anyone setup VIC-2BRI-S/T cards successfully?

I have 2 brand new cards, each in a NM-2V.

The voice quality is so poor that its unusable.

These have been tried on different ISDN lines at different locations, with different cables, different 3660s, different version of sofware in 12.1 and 12.2!!

If I use an FXO port to the PSTN in the same routers, voice quality is fine.

Here's my config:

interface BRI2/0

no ip address

isdn switch-type basic-net3

isdn incoming-voice voice

dial-peer voice 1 pots

destination-pattern 9T

progress_ind alert enable 8

progress_ind progress enable 8

progress_ind connect enable 8

direct-inward-dial

port 2/0/0

thanks

Mark.

2 REPLIES
New Member

Re: VIC-2BRI card voice quality problems

Mark

You may want to have a look at the compand type (ALaw or uLaw) configured under your voice port.

Most non-North American countries use ALaw but the default configuration is uLaw. An incorrect compand type will cause voice distortion.

If you issue the command "show voice port" it will detail the current compand type along with alot of other voice port information.

Regards

Steve

New Member

Re: VIC-2BRI card voice quality problems

Steve,

That was the problem!

Many thanks for your help.

regards

Mark.

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