File formats:

Status:

PROPOSED STANDARD

Author:

H. Kaplan

Stream:

IETF

Source:

straw (rai)

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DOI:  https://doi.org/10.17487/RFC7403

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Abstract

SIP already provides the ability to perform hop-by-hop traceroute for SIP messages using the Max-Forwards header field to determine the reachability path of requests to a target. A mechanism for media-loopback calls has also been defined separately, which enables test calls to be generated that result in media being looped back to the originator. This document describes a means of performing hop-by-hop traceroute-style test calls using the media-loopback mechanism to test the media path when SIP sessions go through media-relaying back-to-back user agents (B2BUAs).

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.