Re: H.248 Mode property vs. signals/events

Christian, Albrecht,

I've been thinking about this some more and have a question about the implementation of stream mode for RTP terminations in particular.

We've established so far that signals/events are unaffected by Mode: in my original example, if the Mode is RecvOnly and an external Signal is requested (e.g. a tone), it should be played; so we're sending RTP packets containing the tone waveform.

So what about RecvOnly/Inactive RTP terminations where there's no Signal requested? Should I be sending RTP packets (assuming I've a remote descriptor) or not? (And if I should, what do they contain?) Per my original trail, I'd assumed no packets should be sent...

Thanks,

Mark

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Christian Groves
Sent: 13 March 2013 10:14
To: Deepak Bissa
Cc: [email protected]
Subject: Re: [Megaco] H.248 Mode property vs. signals/events

Hello Deepak,

The spec says "Signals are unaffected by mode". This text has been there since 1999. I decided to have a look through the mail archives to see if it had been discussed previously. It had, in the context of TDM termination.
("Re: LocalControl Descriptor" 25/04/2000)[Attached].
"        1) Since the MG2 TDM termination mode is inactive, does a ct 
signal get send to CO?
      The answer should be yes since "Signals and Events are not affected by mode.".

The MGC is the master, so if it sets the mode to "Inactive" and it doesn't want a tone or announcement played out of the MG it shouldn't send the signal.

Regards, Christian

On 7/03/2013 5:00 PM, Deepak Bissa wrote:
> Hello Christian,
>
> The signal is played via media stream in this case and is dependent on local/remote descriptor.
> The stream mode should decide the flow of media stream in my view. The rules on media stream should apply here even if a signal is played via media stream.
> What if the stream mode is set as Inactive? Will the signal will still be played?
>
>
> Regards,
> Deepak Bissa
>
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On 
> Behalf Of Christian Groves
> Sent: Thursday, March 07, 2013 11:12 AM
> To: [email protected]
> Subject: Re: [Megaco] H.248 Mode property vs. signals/events
>
> Hello Mark,
>
> The main sentence here is from 7.1.7 "signals and events are not affected by the mode property". 6.1.1 just contrasts the behaviour of stream mode from the topology descriptor.
>
> Even if Streammode = recv is set, if a signal is applied on a Termination/Stream in the outgoing direction it will be sent (the tone will get played). Of course if you haven't set up media in the local/remote descriptor then nothing will get sent.
>
> Regards, Christian
>