Fax send/receive procedures

"Andre Rosa Stefanini" <[email protected]>
Newsgroups gmane.ietf.megaco
Message-ID <[email protected]>
People,

 

Could you help us in solving a question?

 

The scenario is the following:

 

Side A - Fax machine 1 -----> MG1 -----> MGC -----> MG2 -----> Side B -
Fax Machine 2

 

We are testing with 2 MGs controlled by an MGC via H.248 text (according
H.248.2)

 

First, the common voice call is setup by one side, not mattering if A or
B.

 

After that, let's suppose Fax Machine 1 initializes a fax sending,
pressing Snd/Rcv button. As soon as this occur, Fax Machine 2 presses
Snd/Rcv button.

Then, both MGs are reporting V.21Flag to MGC. Is it correct? 

 

Is there any possibility to distinguish which of fax machines are
sending the fax and which is receiving it? This is for avoiding the
other side (fax receiving side - Fax Machine 2) to send V.21Flag toward
the MGC.

 

It's not clear on IETF H.248.2 document whether is correct or not both
sides sending V.21flag toward MGC. Could you please clarify this?

 

Thanks for your attention,

ANDRE

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