[SIPForum-discussion] Sip Problem

[Martijn Pik]

Hello,

I have a problem.

RTP Streaming does not work when i connect my SIP device to my PBX.
I cant make internal calls. (the phone is ringing, but i have no audio)

External calls however are working fine.
i use an Aastra PBX and a Zywall 2+ with ALG support.

It seems my local network is not handeling RTP streaming as it should be

can you help me with this problem?

Best regards
Martijn.
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