Subject: [Megaco] A Question about SDP

From: [email-masked]
Date: Thu, 14 Jul 2005 16:10:19 +0800

Hello all:

I came across such a problem this days:

The MGC send such a local descriptor to MG :

L{
  v=0
  c=IN IP4 $
  m=audio $ RTP/AVP 0 4 /*G711u, G723*/
}

The MG support both G711u and G723 ,

but the supported Package time of G711u and G723 is different:

G711u's package time is 20, and G723's package time is 30.

IS the MGC's Local descriptor right?

If the MGC's Local descriptor is right,

what should the MG reply?
what should the  Local Descriptor be?
L{
 v=0
 c=IN IP4 xxxx
 m=audio yyyy RTP/AVP 0 4
 a=ptime:20
}

or
L{
 v=0
 c=IN IP4 xxxx
 m=audio yyyy RTP/AVP 0
 a=ptime:20
 v=0
 c=IN IP4 xxxx
 m=audio yyyy RTP/AVP 0 4
 a=ptime:30
}

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