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RFC 8606
Title: ISDN User Part (ISUP) Cause Location Parameter
for the SIP Reason Header Field
Author: R. Jesske
Status: Standards Track
Stream: IETF
Date: June 2019
Mailbox: [email protected]
Pages: 7
Characters: 14090
Updates: RFC 3326
I-D Tag: draft-ietf-sipcore-reason-q850-loc-07.txt
URL: https://www.rfc-editor.org/info/rfc8606
DOI: 10.17487/RFC8606
The SIP Reason header field is defined to carry ISUP (ISDN User Part)
cause values as well as SIP response codes. Some services in SIP
networks may need to know the ISUP location where the call was
released in the PSTN (Public Switched Telephone Network) to correctly
interpret the reason of release. This document updates RFC 3326 by
adding a location parameter for this purpose.
This document is a product of the Session Initiation Protocol Core Working
Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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