4 Jan
2010
4 Jan
'10
2:54 p.m.
On 1/4/10 1:43 PM, Antonio Goméz Soto wrote:
[...]
What is it exactly that a UA must support? Do regular VoIP phones
support it?
for call transfer the phones should support REFER and most of them do.
For call pickup you need dialoginfo presence modules loaded on proxy and
the phones to support the SIP extension rfc4235:
http://kamailio.org/docs/modules/3.0.x/modules_k/presence_dialoginfo.html
http://kamailio.org/docs/modules/3.0.x/modules_k/pua_dialoginfo.html
Not many phones support it now, but I guess more will do it in near
future. Snom does it now pretty good.
Cheers,
Daniel
--
Daniel-Constantin Mierla
* http://www.asipto.com/
And I
currently have no clue on how to do attended transfer, or call
pickup
on such a system, both of which seem pretty basic to me in a corporate
environment.
Eint ¿? ... an attended transfer it's no more than two calls A call
B, B puts
A on hold, B calls C, C accept the transfer, B transfer A to C ... it
just
work with the basic example .cfg of kamailio, because it's a work of
the UA's
involved on that calls, not a task of the proxy.
Call-pickup could also be done at proxy level, if your UA's support that
supplementary services, if not .. a B2BUA must be used.