[Asterisk-Users] Cisco 5350 One Way Sound

[NetOne Admin]

Hello All!

I have successfully set up my Cisco 5350 for use with *!

Through direct-inward-dial i have all my users dialing my number placed 
in Asterisk.

But I have a problem - one way sound (it IS NOT a codec issue):
When I call the 5350, it connects to the Asterisk, and then to the 
destination. I can hear the other party, but they can't hear me.
I tried all codecs possible (G.711a/u, G729). I've done the tests with 
ATA-186 connectedto my Asterisk, using the same codec as the 5350.

Any ideas?

Thank you for your time in advance!

Greetings,
Doichin Dokov
NetOne - Silistra