= PJSIP FAQ =

Here you can find answers to some of the most frequently asked questions about PJSIP. If you have a question not answered on this page, you can ask it on the PJSIP mailing list. 

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== General Questions == #general

=== Why isn't PJSIP licensed as (LGPL|MPL|BSD|choose your OSS license here)? === #license

(Perry please explain)

=== What kind of testing do you do on PJSIP? === #testing

 - unit tests
 - test before release
 - by community
 - !Sipit

=== Where can I find the latest release of PJSIP? === #latest

SVN.


== Build and Installation Issues ==

=== I'm having problem building PJSIP === #build-problems

See Getting started page

=== Unable to open "DSound.h" === #dsound

Doh! See Getting Started page.


== Integration Issues ==

=== Can I use the SIP stack with my own media stack? ===

Yes

=== Can I use the media stack only with my own SIP stack? ===

Yes

=== How to port PJSIP to system XYZ? === #porting

See porting page.


== Audio Questions == #media

=== I'm having problems with no/poor audio (quality), please help! === #audio-problem

Please see BlahBlah for troubleshooting audio problems.

=== I'm having problems with echo! === #echo

AEC doesn't work all the time.

=== When I try to send DTMF, it fails === #dtmf

That's because remote doesn't support RFC 2833.

=== Outgoing RTP packets are not timed properly === #tx-timing

It's because of sound device's clock.

=== How to add new codec to PJMEDIA? === #adding-codec

See other codec files.

=== How can I manipulate audio samples directly? === #audio-man

Implement a media port..

=== I always get "Bad RTP pt error" === #bad-rtp-pt

The other endpoint is broken

=== How can I implement Secure RTP (SRTP)? === #srtp

Just implement it

== Video Questions ==

=== Does PJSIP support video? === #video

No

=== When can I expect PJSIP to support video? ===

It will be done when it's done.


== SIP Questions == #sip-questions

=== Does PJSIP support RFC XYZ? === #rfc

See the Features page.

=== I'm having problem with some SIP scenario === #general-sip

Let me see the log file!

=== Unable to authenticate === #authentication

Set your realm correctly, or use "*".

=== How can I reduce the SIP message size === #sip-msg-size

There are few settings to configure...

=== How can I do IMS authentication? === #ims-auth

We don't support this yet.

=== How can I instantiate multiple PJSIP stacks in my application? === #multi-stack

You don't need to!

== Performance ==

=== How can I reduce the CPU usage? === #cpu

Optimize it.

=== I want to build server with PJSUA-LIB === #pjsua-performance

Don't.

== Footprint ==

=== How can I reduce the footprint of my application? === #footprint

See config_site_sample.h


== Windows Specific Questions ==

=== Where can I have PJSIP as ActiveX control? === #activex

See Sasa Coh's page.

== Windows Mobile Specific Questions ==

=== I'm having problem with audio === #wm-audio

Please see [#audio-problem] above.

== Linux/uC-Linux Specific Questions ==

== MacOS X Specific Questions ==

== Symbian Specific Questions ==