Calls soft

paul.qsource

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Nov 16, 2010
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#1
Hi there

I have the latest elastix intallation with sip and 4 meg line.

When making or receiving a call i van hear the people 100% loud etc, but everybody complains that they are unable to hear us, too soft? whe use goldstream gxp 285 sip phones.

Please help.

regards

Paul
 

telecomtechnician

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#2
Hi there, please check and verify the following:

1) What codec are you using?
2) Are you calling to a land line or another sip line?
3) Are you calling to a local or remote extension?
4) What trunks are you using?

There is not one solution to a problem, it really depends specificly in what situation you are.

Waiting for your comments

David Medina
 

paul.qsource

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#3
1) What codec are you using? G729
2) Are you calling to a land line or another sip line? land, cell or sip
3) Are you calling to a local or remote extension?
4) What trunks are you using? sip trunks -vox telecom
 

telecomtechnician

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#4
It seems a problem from the sip provider to the local pstn operator.

Do the following: Configure a softphone (I suggest xlite) with the sip trunk and try to make and receive calls. This means isolate completely the elastix server.

What happens from this tests, will tell you more about the problem.

Waiting for you comments

David Medina
 

jgutierrez

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#5
This seems to me a volume issue on your analog lines, what you can do is to edit /etc/asterisk/chan_dahdi.conf, and edit txgain, set it up to 2.0 instead of 0.0.
Then execute from console: asterisk -rx "module reload"

The txgain field is related to audio transmited out of asterisk
The rxgain field is related to the audio received in asterisk

So if you are thinking to just increase those values... take it easy... If you set them too high, they will cause echo, basically there is no default value, since there are many aspect that changes across analog providers, you will just need to do several tests and use the best value for your implementation.
 

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