[asterisk-users] PJSIP CCSS

Ludovic Gasc gmludo at gmail.com
Thu May 21 12:06:06 CDT 2015

2015-05-21 18:43 GMT+02:00 Joshua Colp <jcolp at digium.com>:

> Ludovic Gasc wrote:
>> 2015-05-21 17:59 GMT+02:00 Jean-Denis Girard <jd.girard at sysnux.pf
>> <mailto:jd.girard at sysnux.pf>>:
>>     Hash: SHA1
>>     Le 21/05/2015 00:16, Joshua Colp a écrit :
>>     >  If CCSS is needed then the only option is to use chan_sip. The
>>     >  chan_pjsip module does not implement CCSS in any way.
>>     Is CCSS support planned for PJSIP? chan_sip is in "extended" state in
>>     asterisk-13, so chan_pjsip should be preferred for new installations,
>> ri
>>     ght?
>> If you really want CCSS support and to be fancy with PJSIP, you can
>> easily implement a similar feature with AMI events, I already did that a
>> long time ago before the integration of CCSS in Asterisk.
>> I think it's possible to implement that only with dialplan and call files.
>> In my mind, chan_sip will be dropped after asterisk 13, is it true ?
> It won't be dropped. It still has features which are not available in
> PJSIP, and people still use it. The extended status refers to the support
> level. Per the support states wiki page[1]:
> This module is supported by the Asterisk community, and may or may not
> have an active developer. Some extended modules have active community
> developers; others do not. Issues reported against these modules may have a
> low level of support.

Joshua, come on, you know as me that you have few people around the world
to have the skills and the time to maintain a C module for Asterisk.
For a critical feature like SIP in Asterisk, at least to me, it means that
for a serious production with Asterisk 13, I won't use chan_sip but I'll
prefer chan_pjsip.
Personally, I don't care if it's pjsip or sip, I only want a telephony
stack that won't piss on my shoes under the fire of a big production.

However, I didn't know that some features are missing in chan_pjsip compare
to chan_sip. A list exists somewhere ?

Moreover, by curiosity, somebody has already benchmarked chan_sip
vs chan_pjsip ? Somebody has a noticed an efficiency issue with pjsip ?


> [1]
> https://wiki.asterisk.org/wiki/display/AST/Asterisk+Module+Support+States
> --
> Joshua Colp
> Digium, Inc. | Senior Software Developer
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - US
> Check us out at: www.digium.com & www.asterisk.org
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