Subject: [Sipping] I-D ACTION:draft-kotar-sipping-dss1-sip-iw-00.txt

From: [email-masked]
Date: Thu, 27 Feb 2003 07:43:30 -0500

A New Internet-Draft is available from the on-line Internet-Drafts directories.

	Title		: Interworking between Digital Subscriber Signalling 
                          System No. one (DSS1) and Session Initiation
	Author(s)	: P. Kotar
	Filename	: draft-kotar-sipping-dss1-sip-iw-00.txt
	Pages		: 36
	Date		: 2003-2-26
	
This document specifies the interworking between the Digital Subscriber Signalling System No.one (DSS1) as specified in [1] and the Session Initiation Protocol (SIP) as specified in [2]. 
SIP is an Internet application-layer control protocol for creating,     modifying, and terminating sessions with one or more participants. These sessions include, in particular, telephone calls. DSS1 is a signalling protocol for establishing, modifying and terminating circuit-switched calls, in particular telephone calls, within Public Integrated Services Digital Networks (ISDN)and between the Public network and Private Networks. DSS1 is specified in a number of ETSI Standards and published also as ITU-T standards. 
The interworking SHALL be described from DSS1 viewpoint for the basic call procedures. 
The interworking between the above signalling protocols occurs in a Media Gateway Controller (MGC), also called Softswitch which contains the protocol  functionality for the ISDN subscribers and the SIP protocol functionality.
In case of contradictions between the mapping described in the present document and the requirements specified in the corresponding DSS1 standards and SIP RFC , the procedures in the DSS1 standards and SIP RFC applies.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-kotar-sipping-dss1-sip-iw-00.txt

To remove yourself from the IETF Announcement list, send a message to 
ietf-announce-request with the word unsubscribe in the body of the message.

Internet-Drafts are also available by anonymous FTP. Login with the username
"anonymous" and a password of your e-mail address. After logging in,
type "cd internet-drafts" and then
	"get draft-kotar-sipping-dss1-sip-iw-00.txt".

A list of Internet-Drafts directories can be found in
http://www.ietf.org/shadow.html 
or ftp://ftp.ietf.org/ietf/1shadow-sites.txt

Internet-Drafts can also be obtained by e-mail.

Send a message to:
	[email-masked].
In the body type:
	"FILE /internet-drafts/draft-kotar-sipping-dss1-sip-iw-00.txt".
	
NOTE:	The mail server at ietf.org can return the document in
	MIME-encoded form by using the "mpack" utility.  To use this
	feature, insert the command "ENCODING mime" before the "FILE"
	command.  To decode the response(s), you will need "munpack" or
	a MIME-compliant mail reader.  Different MIME-compliant mail readers
	exhibit different behavior, especially when dealing with
	"multipart" MIME messages (i.e. documents which have been split
	up into multiple messages), so check your local documentation on
	how to manipulate these messages.

Below is the data which will enable a MIME compliant mail reader
implementation to automatically retrieve the ASCII version of the
Internet-Draft.