Subject: RE: [MEGACO] Empty descriptor (Christer Holmberg (JO/LMF))

From: "Kevin Boyle" <[email-masked]>
Date: Mon, 7 Nov 2005 15:21:27 -0500

Actually, the syntax was altered by H.248.1 Version 2 Corrigendum 1
(03/2004).  Therefore, V2 has optional brackets for SG.
 
There was an attempt made to align all the empty descriptors to be
bracketless.  Clearly some were missed.  I do not believe it is worth
the effort and backwards-incompatibility to try to fix this again.  Call
it a quirk of the protocol.
 
Kevin

________________________________

	From: [email-masked] [mailto:[email-masked]]
On Behalf Of Christer Holmberg (JO/LMF)
	Sent: Tuesday, October 25, 2005 12:53 PM
	To: Stephen Mell
	Cc: [email-masked]
	Subject: RE: [MEGACO] Empty descriptor (Christer Holmberg
(JO/LMF))

	Hi,
	 
	In v3 the ABNF has been changed. I appologize for not mentioning
that.
	 
	Regards,
	 
	Christer

		-----Original Message-----
		From: Stephen Mell [mailto:[email-masked]]
		Sent: 25. lokakuuta 2005 19:30
		To: Christer Holmberg (JO/LMF)
		Cc: [email-masked]
		Subject: Re: [MEGACO] Empty descriptor (Christer
Holmberg (JO/LMF))

		The v2. ABNF for signalsDescriptor is: 
		
		signalsDescriptor                                  =
SignalsToken LBRKT [signalParm *(COMMA signalParm)] RBRKT 

		Where you thinking of Events? 

		Steve 

		
	[email-masked] 
Sent by: [email-masked] 

25/10/2005 17:12 
Please respond to megaco 

        To:        [email-masked] 
        cc:         
        Subject:        Megaco Digest, Vol 18, Issue 22	

		Send Megaco mailing list submissions to
		                [email-masked]
		
		To subscribe or unsubscribe via the World Wide Web,
visit
	
https://www1.ietf.org/mailman/listinfo/megaco
		or, via email, send a message with subject or body
'help' to
		                [email-masked]
		
		You can reach the person managing the list at
		                [email-masked]
		
		When replying, please edit your Subject line so it is
more specific
		than "Re: Contents of Megaco digest..."

		Today's Topics:
		
		  1. Empty descriptor (Christer Holmberg (JO/LMF))

----------------------------------------------------------------------
		
		Message: 1
		Date: Tue, 25 Oct 2005 16:13:14 +0200
		From: "Christer Holmberg (JO/LMF)"
<[email-masked]>
		Subject: [Megaco] Empty descriptor
		To: <[email-masked]>
		Message-ID:
	
<[email-masked]>
		Content-Type: text/plain;
charset="iso-8859-1"

		Hi,
		
		The ABNF currenty says:
		
		localDescriptor                                  =
LocalToken LBRKT octetString RBRKT
		
		remoteDescriptor                                  =
RemoteToken LBRKT octetString RBRKT
		
		signalsDescriptor                                  =
SignalsToken [LBRKT signalParm *(COMMA signalParm)
	
RBRKT]
		
		ISSUE:
		
		To me this means that an empty local (or remote)
descriptor looks like:
		
		Local {}
		
		...while an empty signals descriptor looks like:
		
		Signal

		QUESTION: 
		
		Why are curly brackets requried for an empty
local/remote descriptor, but not for an empty signals descriptor?

		Regards,
		
		Christer
		LM Ericsson

		------------------------------
		
		_______________________________________________
		Megaco mailing list
		[email-masked]
		https://www1.ietf.org/mailman/listinfo/megaco

		End of Megaco Digest, Vol 18, Issue 22
		**************************************

_______________________________________________
Megaco mailing list
[email-masked]
https://www1.ietf.org/mailman/listinfo/megaco