[SIP Beyond VoIP] Re-registration of number with Avaya IP office software

[Madis-Karli Koppel]

Hi

Is it possible to use python-sipsimple with Avaya IP office.

I have managed to set it up a small system and everything else works
perfectly except registration. When a registration refresh is sent mid-call
the call drops (from Avaya side).

I might be wrong, but according to my investigations the reason is
mismatched FROM-tag in registration: registration uses _core.request that
uses pjsip_endpt_create_request from sip_util.h that adds a new tag to the
request and not the tag of old registration that Avaya would like. All of
this means that Avaya treats the registration as a new registration and not
refresh of old one.

Unfortunately enabling GRUU is not possible on Avaya side.

Is there anything to do in this situation?

All the best
Madis-Karli Koppel
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