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[Linphone-developers] Are PCMA and PCMU working in android version?
From: |
Konstantin.O |
Subject: |
[Linphone-developers] Are PCMA and PCMU working in android version? |
Date: |
Tue, 16 Jun 2015 18:00:31 +0300 |
Hi Linphone Developer!
Yesterday I cloned from Git and built latest Linphone for Android, exactly as
it is hinted in README.md.
It work fine but codecs only working (adevtised) are OPUS, iLBC, SILK and SPEEX.
I have enabled all codecs in settings, but I never seen PCMA/PCMU, GSM, G726,
G722 in list.
There are NO widely used codes like PCMA/PCMU, GSM, G726, G722 in SIP INVITE
message.
I used tcpdump to examine SIP dialogs with asterisk, here is example of INVITE
from Linphone to asterisk:
A.B.C.D.60191 > Q.W.E.R.5060: SIP, length: 1472
INVITE sip:address@hidden SIP/2.0
Via: SIP/2.0/UDP 192.168.2.2:60191;branch=z9hs4bK.YuOjUMR-c;rport
From: <sip:address@hidden>;tag=-GsMdk1kU
To: sip:address@hidden
CSeq: 21 INVITE
Call-ID: MFuoHrcVVt
Max-Forwards: 70
Supported: outbound
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE,
SUBSCRIBE, INFO, UPDATE
Content-Type: application/sdp
Content-Length: 1692
Contact:
<sip:address@hidden:60191>;+sip.instance="<urn:uuid:2523207c-9b19-3451-8a48-60bf318684eb>"
User-Agent: LinphoneIphone/X
Authorization: Digest realm="ASTASTAST", nonce="aa372dce",
algorithm=MD5, username="20029", uri="sip:address@hidden",
response="1eb25ee20e29e7f87be9542eed3d0e18"
v=0
o=20029 3033 2572 IN IP4 192.168.2.224
s=Talk
c=IN IP4 192.168.2.224
b=AS:512
t=0 0
a=rtcp-xr:rcvr-rtt=all:10000 stat-summary=loss,dup,jitt,TTL voip-metrics
m=audio 7078 RTP/AVP 96 97 98 99 0 8 3 9 100 102 103 104 105 106 107
101 108 109 110 111 112 113
a=rtpmap:96 opus/48000/2
a=fmtp:96 useinbandfec=1; stereo=0; sprop-stereo=0
a=rtpmap:97 SILK/16000
a=rtpmap:98 speex/16000
a=fmtp:98 vbr=on
a=rtpmap:99 speex/8000
a=fmtp:99 vbr=on
a=rtpmap:100 iLBC/8000
a=fmtp:100 mode=30
a=rtpmap:102 mpeg4-generic/16000
a=fmtp:102 config=F8EE2000; constantDuration=512; indexDeltaLength=3;
indexLength=3; mode=AAC-hbr; profile-level-id=76; sizeLength=13; streamType=5
a=rtpmap:103 mpeg4-generi[|sip]
My questions are:
1. How I can enable building and use of codecs PCMA, PCMU, GSM and G726 in
Android version of Linphone?
2. How can I add other codes, say, Codec2?
--
Konstantin
- [Linphone-developers] Are PCMA and PCMU working in android version?,
Konstantin.O <=