[Users] New features added to OpenSer - BLA support and XMPP presence gateway
anca at voice-system.ro
Wed Apr 4 12:57:52 CEST 2007
Two new modules were just introduced to SVN -- both are related to
1) pua_bla - implements Bridged Line Appearances according to the
specifications in draft-anil-sipping-bla-03.txt. BLA, aka Shared
Call/Line Appearance, comes from old telephony, where many devices share
same line. Translated to SIP, means that many SIP devices share same
AoR, but only one call can be established at a time, either addressed or
initiated from the line. The call can be put on hold, and the others
devices are notified so that they can pick up the call (the typical
example is that with the secretary answering the call and putting it on
hold to be picked up by the boss).
The SIP devices must have client-side support for BLA as well. In out
tests we used POLYCOM SoundPoint IP 430 SIP phones. The behaviour for
this specific device: when picking up the handset form one phone a red
light appears at the other phones. If attempting to call from a second
phone using the same line, you get the message "Resources full". If a
call is established, when putting it on hold, the light starts to
flicker at the other phones and it is possible to pick it up.
2) pua_xmpp - is a presence gateway between SIMPLE and XMPP. It comes to
complete the IM gateway, by enabling presence state information exchange
between SIP/SIMPLE and Jabber/XMPP clients. For testings we used Gaim
2.0.0beta5, Psi v0.10 for XMPP and Xlite v3.0 for SIP.
Some sample config file to implement above features will be published
soon on dokuwiki.
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