RFC 6223

"Indication of Support for Keep-Alive", April 2011

Canonical URL:

http://www.rfc-editor.org/rfc/rfc6223.txt
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Status:

PROPOSED STANDARD

Author:

C. Holmberg

Stream:

IETF

Source:

sipcore (rai)

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Abstract

This specification defines a new Session Initiation Protocol (SIP) Via header field parameter, "keep", which allows adjacent SIP entities to explicitly negotiate usage of the Network Address Translation (NAT) keep-alive mechanisms defined in SIP Outbound, in cases where SIP Outbound is not supported, cannot be applied, or where usage of keep-alives is not implicitly negotiated as part of the SIP Outbound negotiation. [STANDARDS-TRACK]

For the definition of Stream, see RFC 4844.