[OpenSIPS-Users] Opensips and 100rel

Iñaki Baz Castillo ibc at aliax.net
Mon Jun 28 11:30:19 CEST 2010

2010/6/28 Jon Bonilla <manwe at aholab.ehu.es>:
>> > - Nortel uses "Allow" instead of "Supported", so the 100rel string must be
>> >  erased in that header also.
>> "100rel" in the Allow header ????:
> No. PRACK in the "Allow" header. I was mistaken on that. I had to erase PRACK
> from there.

PRACK in the Allow header just means that the UA supports PRACK
method, but PRACK method only makes sense after the negociation of the
100rel extension success.

>> > - Some vendors use "PRACK" instead of "100rel", so I had to find that string
>> >  also to completely disable this beahaviour.
>> PRACK is the name of the SIP method, 100rel is the name of the whole
>> extension including the mechanism to negociate the usage (or not) of
>> PRACK method to confirm provisional responses.
> I have seen different gw using "100rel" or "PRACK" in the "Supported" header.

"PRACK" in "Supported" header is outrageous. Which stupid gw is using
such value?

Iñaki Baz Castillo
<ibc at aliax.net>

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