Subject: [Megaco] Negative transaction reply

From: [email-masked]
Date: Thu, 30 May 2002 16:00:51 +0300

Hello,

Suppose the MG does not support the codec sent by the MGC within Media
descriptor of ADD (ephemeral) command.

According to RFC 3015:
"The TransactionReply includes the return values for the Commands that were
executed successfully,and the Command and error descriptor for any Command
that failed"

What about the following example: Is it OK the send NACK for the whole
action without processing even the first ADD command?

MEGACO/1 [123.123.123.4]:55555
   Transaction = 50003 {
       Context = $ {
          Add = A5555  { Media {
               Stream = 1 {
                    LocalControl {Mode = SendReceive} }},
                Events=1234{al/of},
               Signals {al/ri}
               },
          Add  = $ {Media {
               Stream = 1 {
                    LocalControl {
                       Mode = SendReceive,
                       nt/jit=40 ; in ms
                    },
                    Local {
   v=0
   c=IN IP4 $
   m=audio $ RTP/AVP 4

   a=ptime:30
                    },
                    Remote {
   v=0
   c=IN IP4 124.124.124.222
   m=audio 2222 RTP/AVP 4
   a=ptime:30
                    } ; RTP profile for G.723 is 4
                }
             }
         }
      }
   }

Dana H.
SW Engineer
NGTS ECI Telecom

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