Re: Selection of media (m=) at MG

Raju,
> In fact, when a signal (tone/annc) is played on one termination 
> (signal going outside of the context),
> the termination is temporarily "disconnected oneway" (so it won't 
> receive any data, but can send) from
> the other terminations (as if the termination has "oneway" topology to 
> others).
>>
A more.

What document or Recommendation defines exactly this behavior of a 
termination for sending tones / announcements?

Regards,

Javi

>>> -----Original Message-----
>>> From: [email protected]
>>> [mailto:[email protected]] On Behalf Of Javi Muñoz
>>> Sent: Thursday, December 01, 2011 12:43 PM
>>> To: [email protected]
>>> Cc: Bhattacharjee, Arindam (Arindam)
>>> Subject: Re: [Megaco] Selection of media (m=) at MG
>>>
>>> Arindam,
>>>
>>>> You can use another option: have reserve value on and use
>>> both g711 and Clearmode on both remote and local SDP and MG
>>> will send in g711 only because that has higher preference
>>> when G711 appears before CLearMode codec in the list as follows:
>>>>    m=audio<puerto>    RTP/AVP 0 [8]<PT_dinámico>
>>>>    a=rtpmap:<PT_dinámico>    CLEARMODE/8000
>>> When the Remote descriptor has several audio codecs in the line "m=":
>>>
>>>    m=audio<puerto>    RTP/AVP 0 [8]<PT_dinámico>
>>>
>>>
>>> I understand that:
>>>
>>> 1º First codec in the line is used if it is possible.
>>>
>>> 2º In case that codec may not be used (for an error, for
>>> example), the
>>> second codec would be tried (I understand this is the reaseon why the
>>> Remote descriptor may have several audio codecs in the same line "m=).
>>>
>>>
>>> If it is so, and we use:
>>>
>>>    m=audio<puerto>    RTP/AVP 0 [8]<PT_dinámico>
>>>
>>>
>>> What would happen if when MG needs to send the tone/ann., the
>>> codecs "0"
>>> and "8" may not be used?. MG would try to send the tone/ann. to the
>>> terminal using CLEARMODE, when terminal is not ready to receive that.
>>>
>>> Javi
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>
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