[Spce-user] Fwd: Packet Size

qabane me qabaneitsolutions at gmail.com
Tue Sep 11 06:31:04 EDT 2018


I have played a bit more with this and found in config.yml:

      enable: yes
      remove_line_startswith: [b]
 (I added the yes and the b)

This indeed filters out that line - sngrep shows that the lb does not pass
it to the proxy. However, the behaviour remains the same. When a call comes
in with a ptime of 60, sipwise sends it on to the peer with a ptime of 40.
My guess is that it picks 40 based on the max bandwidth of 80? I had hoped
that by filtering that line from the sdp it would not do this anymore but
no joy there.

Any ideas?

---------- Forwarded message ---------
From: qabane me <qabaneitsolutions at gmail.com>
Date: Thu, Sep 6, 2018 at 11:55 AM
Subject: Fwd: Packet Size
To: <spce-user at lists.sipwise.com>

Ok I am not entirely correct. It does seem to work - but not to one
carrier. The difference is that this carrier responds with b=AS:80. As a
result (and I am only assuming it is as a result of that flag) the packet
size we are sending out is 40 which results in one way audio. This is
despite the fact that have set the ptime to 20 and despite the fact that
there is a maxptime:20 in their response.

[image: image.png]

---------- Forwarded message ---------
From: qabane me <qabaneitsolutions at gmail.com>
Date: Thu, Sep 6, 2018 at 11:20 AM
Subject: Packet Size
To: <spce-user at lists.sipwise.com>


As part of our testing of MR6.4.1 we are playing with repackatisation. We
have set, on a peer level, a packet size of 20. Then we send a call from a
PBX with a ptime of 60. I had expected this to be repacketised to 20 going
upstream but that does not seem to work.

Am I misunderstanding this or is something not working?

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