SIP Recording (siprec)

Interim Meeting of

Note: This is a snapshot as of 2011-09-06. It may now be out of date.

Minutes | Agenda | Jabber Logs | Mailing List Archives

Additional information is available at


Real-time Applications and Infrastructure Area Area Director(s):

Real-time Applications and Infrastructure Area Advisor(s)

Meeting Slides:


Request for Comments:

RFC6341 I Use Cases and Requirements for SIP-based Media Recording (SIPREC)


The Session Recording Protocol (SIPREC) working group is chartered to
define a SIP-based protocol for controlling a session (media) recorder.

Session recording is a critical requirement in many business
communications environments such as call centers and financial trading
floors. In some of these environments, all calls must be recorded for
regulatory and compliance reasons. In others, calls may be recorded for
quality control, business analytics, or consumer protection. Recording
is typically done by sending a copy of the media to the recording
devices. The working group will determine requirements and produce a
specification for a protocol that will manage delivery of media from an
end-point that originates media, or that has access to it, to a
recording device. PBX and recording vendors today implement proprietary,
incompatible mechanisms to facilitate recording. A standard protocol
will reduce the complexity and cost of providing such recording

The Session Recording problem presents certain unique requirements that
are not addressed in the current SIP protocol specification. These
include requirements such as the need for a distinction between the
session that is being recorded versus the session that has been
established for recording.

Privacy and security of conversations are significant concerns. The
working group will make sure that any protocol specified addresses these
concerns and includes mechanisms to alert users to the fact that a
session they are participating in is being recorded.

The working group must take care that the session recording requirements
and protocol does not conflict with the IETF statement on wiretapping
contained in RFC 2804.

The SIPREC Working Group will thoroughly identify use cases, provide
example system architectures and deployment scenarios, and define

The scope of the activity includes:

* Recorder Control

* Session metadata content and format

* Security mechanisms, including transport and media encryption

* Privacy concerns, including end-user notification

* Negotiation of recording media streams

The group will define these issues and rationalize with IETF standards
and practices. This includes encryption, NAT traversal, operations and
manageability, SIP-enabled firewalls, authorization, and security.

The group will produce:

* Updated Requirements, Use Cases, Architecture draft

* Specification for Session Recording Protocol

Goals and Milestones:

Done   Use Cases and Requirements to IESG as Informational RFC
08-2011   Architecture to IESG as Informational RFC
12-2011   Submit Metadata model and format to IESG as Proposed Standard RFC
01-2012   Submit protocol draft to IESG as Proposed Standard RFC