[Megaco] [Fwd: EBCP Flag ON-OFF transition]

-------- Original Message --------
Subject: EBCP Flag ON-OFF transition
Date: Mon, 30 Jun 2003 15:57:10 +0530
From: bvswamy@hss.hns.com
To: megaco-admin@ietf.org

Hi All
       Needed a clarification on the behaviour of MG wrt to the EBCP flag
transition from ON to OFF.
The scenario is as follows:

1) Modify
TermId = T10
CtxId = null
Media
{
TerminationState { Buffer = LockStep}
},
Events = 1 { dd/d0,dd/d1,dd/d2,al/hf},
EventBuffer { dd/d4, dd/d5, dd/d6, dd/d7 }

2) After the  notification of any event in the event descriptor,
eventbuffer descriptor is activated and buffering is done by MG.

3) MGC modifies the EBCP flag to OFF.
Modify
TermId = T10
CtxId = null
Media
{
TerminationState { Buffer = OFF}
}
       Now according to the protocol, the events that are buffered shall be
discarded,
(draft-ietf-megaco-3015corr-01>>
" If the MG receives a command instructing it to set the value of
EventBufferControl to Off, all events in the EventBuffer SHALL be
    discarded"
)

however there is no mention whether the old event  descriptor shall get
activated or not. That is if any event in the old event
descriptor is detected then whether it should be reported to MGC  or
whether it should be discarded.

Regards
Venkat
www.hssworld.com
Hughes Software Systems

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