Subject: [Megaco] media descriptor for physical terminations in Null context

From: "Dominic Walker" <[email-masked]>
Date: Tue, 10 Dec 2002 11:14:44 -0000

Hi all,
If an MG receives the following Add/Modify command to create or modify a
physical termination (tp) in a null context:

MEGACO/1 [a.b.c.d]:port_no
    Transaction=trans_no {
        Context= - { 
             Modify=tp  { 
                 Media {
		      LocalControl {Mode=ReceiveOnly}
                           },
                  Signals { bcg/bdt { 
                                             NotifyCompletion={
Timeout,OtherReason}
                                            }
                               },
                   Events= event_id {g/sc}
                }
            }
       }

How should an MG treat the LocalControl descriptor within the Media
descriptor in the above example?( Note the above null context only has a
Physical Termination)
   a) should the MG simply ignore the Media descriptor, thus playing out the
appropriate signals on the physical? 
   b) In the case an MG should apply whatever is in the Media descriptor
then if mode setting contradicts (as shown above) should the MG NACK or
ignore?

Regards,
Dominic

____________________________________________
Dominic Walker
PVG Systems Architecture Group
Passport Packet Voice Gateway
Carrier Voice over IP 
Nortel Networks
London Road, 
Harlow, Essex, CM17 9NA, UK

   Tel: (direct) +44 (0)1279 403379
ESN (Internal): 742-3379 
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mailto:[email-masked]
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