[asterisk-bugs] [JIRA] (ASTERISK-20976) Asterisk 11.2.1 RTP packetization setting ignored in RTP output

[i2045 (JIRA)]

i2045 created ASTERISK-20976:
--------------------------------

             Summary: Asterisk 11.2.1 RTP packetization setting ignored in RTP output
                 Key: ASTERISK-20976
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20976
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: . I did not set the category correctly.
    Affects Versions: 11.2.1
         Environment: Ubuntu 12.04 LTS server
            Reporter: i2045
         Attachments: Asterisk_11_2_1_RTP_packetization.pcap

The setup:

192.168.178.250 Endpoint: Zoiper softphone (initiates the call)
192.168.178.31 Endpoint: Asterisk (answerers the call)
192.168.178.30 Asterisk 11.2.1 (between Zoiper and other Asterisk) + make samples + these changes:

sip.conf

114a115
> canreinvite=no
309,310c310,311
< ;disallow=all                   ; First disallow all codecs
< ;allow=ulaw                     ; Allow codecs in order of preference
---
> disallow=all                   ; First disallow all codecs
> allow=ulaw:30                     ; Allow codecs in order of preference

extensions.conf

656a657
> exten => 666,1,dial(SIP/${EXTEN}@192.168.178.31)



Zoiper calls .30 (Asterisk 11.2.1 box in the middle).
.30 dials .31.
.31 answerers the call and plays the demo-congrats.

Now Asterisk 11.2.1 should send RTP packets each 30ms to Zoiper.
This is also announced in the signalling:

U 2013/01/23 15:50:08.419046 192.168.178.30:5060 -> 192.168.178.250:5060
SIP/2.0 200 OK.
...
v=0.
o=root 983949886 983949886 IN IP4 192.168.178.30.
s=Asterisk PBX 11.2.1.
c=IN IP4 192.168.178.30.
t=0 0.
m=audio 13074 RTP/AVP 0 101.
a=rtpmap:0 PCMU/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-16.
a=silenceSupp:off - - - -.
a=ptime:30.
a=sendrecv.

But the RTP packets are send each 20ms not 30ms.
I have a packet capture attached.

Is the RTP packetization setting supported in Asterisk 11?

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