I'm glad that Freeswitch is fine with handover. And I'm relying on no specific features, so it should hopefully work with the others..

As for Asterisk (I think it is 1.8), It had troubles with processing re-Invite.
It ack'd it, while continued sending rtp to the old endpoint.
I played with configuration files, but without success. Might be just cause I don't like Asterisk :)
There were letters and traces somewhere at the first half of September.

As for freeswitch issues (w/o rtp-rewrite-timestamps), it was described in a letter dated Oct'22



Wed, 24 Oct 2012 03:57:35 -0400 от james jones <james@freedomnet.co.nz>:
Was it just the RTP the timers?

On Wed, Oct 24, 2012 at 3:37 AM, Alexander Chemeris <alexander.chemeris@gmail.com> wrote:
We're happy with Freeswitch for now. If somebody wants to make it
working with Asterisk - please do so. We're accepting patches and
configuration guidelines.

On Tue, Oct 23, 2012 at 2:18 PM, Kurtis Heimerl
<kheimerl@cs.berkeley.edu> wrote:
> Great news Dmitri, congrats.
>
> Not to be a downer, but does this mean you don't have it working with
> Asterisk? I implore you to test with the most recent version of
> asterisk, I understand they fixed a lot of these particular issues.
>
> On Mon, Oct 22, 2012 at 3:19 PM, Dmitri Soloviev <dmisol@mail.ru> wrote:
>> Hi list,
>>
>> the first completely successful handover (for the public release) is traced
>> here: http://opensigtran.org/20121022_handover_voice.pcap.gz
>> sources are git-ed at
>> https://github.com/dmisol/openbts-p2.8/commits/handover
>>
>> It is important to configure Freeswitch properly, setting
>> "rtp-rewrite-timestamps" to "true".
>>
>> All target-BTS procedures are implemented, while originating-side activities
>> are done as workaround, inside a CLI thread. They will be moved to a
>> dedicated thread (like at the target BTS) asap.
>>
>> UmTRX cards were used to eliminate the influence of improper clocking.
>> Meanwhile the handsets from Nokia are still not supported.
>> All mandatory parameters for non-synchronized handover seems to be set
>> properly.. So, real-life traces of non-synchronized handover are welcomed.
>>
>> Rgds,
>> Dmitri
>>
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--
Regards,
Alexander Chemeris.
CEO, Fairwaves LLC / ООО УмРадио
http://fairwaves.ru

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