Voice Calls are to silent on the PSTN

[markusp]

Hi,

I´m having a problem with my calls going to the PSTN.

Our curtomers complain that the sound level is very low and they can´t hear us properly.

We are using CM 3.0(11), 3640 with E1 (NM-HDV1E1-30).

The IOS is 12.2.2T ( we also have tested a few other)

voice-port 1/0:15

translate called 1

output attenuation 12

echo-cancel coverage 24

no vad

cptone AT

description Voice E1 Line

The problem could be that the output attenuation 12 doesn´t have any effects - no changes if we change the dB value.

Has someone a solution for that ?

Thanks

Markus

[ciscomoderator]

Since there has been no response to your post, it appears to be too complex for other forum members to assist you. There are a number of variables in troubleshooting voice quality issues.

You may wish to review these documents: http://www.cisco.com/warp/public/788/index.shtml

Should you require further assistance and you don't get a suitable response to your post, you may wish to review our resources at the online Technical Assistance Center (http://www.cisco.com/tac) or speak with a TAC engineer. You can open a TAC case online at http://www.cisco.com/tac/caseopen

If anyone else in the forum has some advice, please reply to this thread.

Thank you for posting.