Subject: RE: [Megaco] announcment(MGCp/MEGACO)

From: "David Cromwell" <[email-masked]>
Date: Thu, 2 Aug 2001 10:57:52 -0400

Comments embedded below.

Regards,
David
--
[email-masked]                   Nortel Networks Cable
Telephony Solutions, Inc. 
Tel:   919-991-8870  (esn 351)                     35 Davis Dr
Fax:  919-991-4088                                    RTP, NC 27709

> -----Original Message-----
> From:	kris [SMTP:[email-masked]]
> Sent:	Thursday, August 02, 2001 3:46 AM
> To:	megaco
> Subject:	[Megaco] announcment(MGCp/MEGACO)
> 
> hi all,
>  
> i want some clarification regarding playing announcements
>  
> 1.Can we play a announcement segment, an alias and also a flat file
> announcement all in one play signal.
>  
>    S: pa(an=5, /welcome/, <file://audio/welcome>)    Is this possible.?
> 
	[<dcc>]  No.  The proposed H.248 Annex M.1 does not have aliases.
RFC 2897 does not support URIs. See the respective ABNFs for details.  With
the MGCP package you could play segment 5 and the alias.  With the H.248
package you could play segment 5 and the file URL.
>  
> 2.Can we play an announcement and display text in one paly signal?
>  
> S:pa(an=5 , dt(hello))   is it possible?
> 
	[<dcc>]  This is possible with the MGCP package.  The H.248 package
does not support display text.  We felt that display text belonged in a
separate package, however no package has been defined.
>  
> 3. Can we play a tone variable in announcement.In basic audio package
> there is a mention of this ,but there is no sysntax given 
> and it is mentioned as tbd(to be discussed).
>  
>  S:pa(an=to(1))    with a tone ID
> S: pa(an=to(rbt))  with a Tone name.
>  
> is it possible?
>  
> or is this possible like
>  
> S: pa(an=vb(ton , name, rbt)   ?????
> 
	[<dcc>]  In the MGCP package tones were not well defined (tbd), and
in the H.248 package tones are not defined at all.  There has been a
proposal for a tones package to extend the PacketCable Audio Server Protocol
(ASP) base audio package.  (The ASP is based on the MGCP package and
contains functional elements of the H.248 package).  This proposal does use
standard tone names as defined in either MGCP tone packages or H.248 tone
packages, I forget which.  This package could be proposed as an H.248
package to extend the H.248 audio base package.
>  
> 4. How do we embed a date variable in an announcement.
> should we mention just the date as
>  
> S:pa(an=5 <02082001>)   OR
> 
	[<dcc>]  This is correct for the MGCP package.  You can do the same
thing with the H.248 package, but of course the syntax would be different.
>  
> CAN WE give like this as 
>  
> S:pa(an=5 <dat ame 02082001>)    where dat is variable ame is for american
> format and then number.
>  
	[<dcc>]  You can't do this in MGCP since that package does not
support subtype for the date variable.  You can do something similar in the
H.248 package (again different syntax) using subtypes, however "ame" is not
a valid subtype.  See the section in Annex M.1 on the date variable and the
ABNF for the set of valid subtypes. 
>  
> Are the above sysntax possible both  in Megaco and MGCP ?
> 
	[<dcc>]  The above syntax seems to be mainly the MGCP syntax.  The
H.248 syntax is different.
>  
> please help me with details if and where possible.
>  
>  
>  
>  
> regards
> kris
>  
>