[asterisk-users] Attempting to get BLF working with linphone

Joshua C. Colp jcolp at sangoma.com
Wed Mar 25 09:12:10 CDT 2020

On Wed, Mar 25, 2020 at 11:07 AM John Hughes <john at calva.com> wrote:

> On 23/03/2020 18:51, Joshua C. Colp wrote:
> On Mon, Mar 23, 2020 at 2:45 PM John Hughes <john at calva.com> wrote:
>> Why is asterisk giving an error 500? I can find no reason, there is
>> nothing in any log.
> The sequence number is from the past. The first SUBSCRIBE is sequence
> number 22 (check the CSeq header). The second is 20. The third is 21. It
> appears as though this is from the past, so it receives a 500.
> Ok, I've had some back and forth with the linphone developers and they
> contend that although the sequence number on the 2nd and 3rd SUBSCRIBE
> messages start a new sequence this is legal as it is a new conversation --
> the "tag=" on the From has changed.
> Are they right?  (Notice that the tag= from asterisk also changes).

It's possible. If I recall chan_sip is extremely forgiving with matching
things, so it may not have taken that into account.

Joshua C. Colp
Asterisk Technical Lead
Sangoma Technologies
Check us out at www.sangoma.com and www.asterisk.org
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