[OpenSIPS-Users] Functional Difference B2B_Bridge between OpenSIP 1.8 and 2.4.2

[Louis Rochon]

Trying to upgrade my platform to OpenSIPS 2.4.2 (yea, about time, I know).



We use this to move established calls from one server to another:



/usr/local/sbin/opensipsctl fifo b2b_bridge <tupleID> sip:555 at 1.2.3.4 0



This works fine with OpenSIPS 1.8. The above causes this:

1. Invite (reinvite) to caller with no sdp.

2. RX of 200 OK with SDP from caller

3. Invite with SDP to 1.2.3.4

4. RX of 200 OK with SDP from 1.2.3.4

5. OpenSIPS send ACK WITH SDP to caller.



Call moved. All good.



With OpenSIPS 2.4.2:

1. Invite (reinvite) to caller with no sdp.

2. RX of 200 OK with SDP from caller

3. Invite with SDP to 1.2.3.4

4. RX of 200 OK with SDP from 1.2.3.4

5. OpenSIPS send ACK WITHOUT SDP to caller.



With 2.4.2, I get one way audio, very likely because of the lack of SDP in the ACK in point 5.



My research does not lead me anywhere on how why this behaviour changed between 1.8 and 2.4.2. I can't find any flags to set to get b2b_bridge command to have to old behaviour.



Help!



regards,

Louis

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