Re: echo from voip to pstn via vg200

jfrelin · ‎12-31-2001

I'm getting echo back to the voip caller of his own voice only when calls are to the pstn through my vg200/pri. I used to have a email from a tac engineer on what I have to change but I have since lost it. Currently my config is:

voice-port 1/0:23

input gain -3

output attenuation 6

playout-delay maximum 140

Any advice would be great!

Thanks!

-jjf-

mimckee · ‎12-31-2001

What version of code are you running on the vg200? With this config does the voice sound softer or just as loud?

Thank you,

-Mckee

jfrelin · ‎12-31-2001

Seems just as loud...

The ios on the vg200 was a special release to fix some other problems I was having with jitter and the bug with any latency above 150ms the packet gets dropped...

vg200-01#sho ver

Cisco Internetwork Operating System Software

IOS (tm) VG200 Software (VG200-I6S-M), Experimental Version 12.2(20010928:060219

) [jmuir-v122_5 160]

Compiled Mon 19-Nov-01 23:01 by jmuir

Image text-base: 0x80008088, data-base: 0x80810C4C

ROM: System Bootstrap, Version 12.1(1r) [phanguye 1r], RELEASE SOFTWARE (fc1)

vg200-01 uptime is 2 weeks, 3 days, 19 hours, 54 minutes

System returned to ROM by reload

System image file is "flash:vg200-i6s-mz-case149647.bin"

ppoulin · ‎12-31-2001

Do you have the following command on the dial-peer voip:

incoming called-number .

We had echo on our config. before and we have solved our problems using that command.

jfrelin · ‎12-31-2001

that command caused echo?!

ppoulin · ‎12-31-2001

You are right ... it was not echo problem ... We had codec mismatch one way g711ulaw and the other way g729r8. We had voice quality problem.