Duplex VoIP?

[andyfram]

Is there a setting somewhere to duplex VoIP?

I have to offices with a 16 channel VoIP card in a TDA600 and TDA200. Both sides also have the echo canceller installed.

If both parties are talking at the same time, they can't hear each other because the audio cuts out.

 

[rivet]

maby you have the codec set too low or set diferent on each site.set both sites to G711 and work backwards.

peter

 

[andyfram]

Both sides are set for G.711A as priority 1 and G.729A as priority 2.

(Probably not related but home offices using an IP-EXT card work OK when talking at the same time).

 

[Mike_K]

Do you set echo canceller on both KX-TDA0490 in 1.3.5?
And try set low gain in 1.3.6 for PCM -> LAN and LAN -> PCM on both sides.

 

[andyfram]

Echo canceller is set to 48ms on both sides.
Gain levels are set to 0 on both sides.

 

[Trotski]

Are you using a private LAN between PABX

 

[dampa]

Hello !
Remove ( disable ) one of echo-canceller . If it is work two of them they may cause a loop and then you have noise .