Bridged ext SIP call between different systems

[jeadavis]

We have multiple locations using SIP between locations.  The issue is that when calling from a CISCO system extension to an extension on a 3COM there is no issue.  When calling from CISCO to 3COM extension that has bridged extension (does not matter if it is the host or slave) when the phones are ringing no problem, when the call is attempted to be answered from either 3COM phone, the call is not completed and the CISCO phone hears a busy tone.

3COM ext 1 is host, ext 2 is slave

Cisco phone calls ext 1, both ext 1 and 2 ring.  When either ext 1 or 2 attempt to answer, Cisco phone hears busy tone.

This message was edited by jeadavis on 4-5-10 @ 10:50 AM

[merlin_1]

NBX  V5000 to a Cisco telephone system ?

Not sure if any testing has ever been done on that ...

[donbru01]

When incoming call ( SIP TRUNK) go to bridged extension NBX , there are problem:

- after extension answer , return to  caller abnormal IP audio path normaly default gateway NBX

- few second and NBX return refresh session with correct IP audio path

This problem create :

- no audio between device

- return busy tone

Try to verify on router and switch off "SIP INSPECT"

Thanks