[OpenSIPS-Users] RV: Very Strange Case

Jorge Luis Ortea darham at hotmail.com
Tue Sep 19 05:14:40 EDT 2017

Hi all,

I've been using OpenSIPS for a long time and I have never seen anything like it.

The schema is very simple, OpenSIPS exchanges SIP traffic between SBC and Asterisk PBX, during a fax call in response a REINVITE packet a 200 Ok is ignore by OpenSIPS, not even writes in log, as if this packet did not exist. OpenSIPS always ignores the same SIP packet and its retries.

The sniffer on the Opensips interfaces shows that the packets are arriving correctly.

Network diagram:

Traffic capture:

Does anyone think it might be happening?

Very Thanks.

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