[Asterisk-Dev] Sound Problem

[Helmut Adams]

I need a hint, how to debug this to find the source of the Problem:

Grandstream/SIP/ULAW <-NAT-> Asterisk <-IAX2/GSM-> Asterisk <- ISDN/CAPI -> 
POTS

A Call from Grandstream to POTS leads to: POTS can speak to Grandstream, but 
can't hear Grandstream.

Calling from POTS to Grandstream works well.

Also it works well in both Calling-Directions, if i replace Grandstream with 
XTEN-Lite...

Every other Call-Combination works well, too...

Strange, that.

So if anybody has a hint, how to debug this, its welcome. ( Sorry, i really 
dont know, where to start debugging... )


-- 
Mit freundlichen Gruessen / Regards

Helmut Adams
Ipcon Informationssysteme oHG
Kontakt: http://www.ipcon.de/kontakt.php