Liaison statement
LS on technologies involved in countering voice spam in telecommunication organizations

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State Posted
Submitted Date 2014-10-03
From Group ITU-T-SG-17
From Contact Martin Euchner
To Group stir
To Contacts Robert Sparks <rjsparks@nostrum.com>
Russ Housley <housley@vigilsec.com>
Cc Richard Barnes <rlb@ipv.sx>
Alissa Cooper <alissa@cooperw.in>
stir@ietf.org
A Kremer <kremer@rans.ru>
Koji Nakao <ko-nakao@kddi.com>
Anthony Rutkowski <tony@yaanatech.com>
Scott Mansfield <Scott.Mansfield@Ericsson.com>
Purpose For comment
Deadline 2015-03-31 Action Taken
Attachments COM17_LS150
Liaisons referring to this one STIR WG response to LS on technologies involved in countering voice spam in telecommunication organizations
Body 
ITU-T Study Group 17, Security, in its Question 5/17, Countering spam by
technical means, is pleased to inform you that our draft Recommendation ITU-T
X.ticvs on technologies involved in countering voice spam in telecommunication
organizations was close to being finalized.

The work item was established in September 2011 and proceeded in the recent
three years. We kindly invite the experts of IETF WG STIR to review the text of
X.ticvs (see attachment 1) giving full considerations of the following:

- X.ticvs focuses on the technologies on countering voice spam initiated from
the circuit-switched network with the consideration that the technologies on
countering voice spam initiated from the IP-based network have been recommended
in Recommendations ITU-T X.1245 and X.1244. - With the respect to WTSA-12
Resolution 52 (Rev. Dubai, 2012), Countering and combating spam, X.ticvs
avoided recommending technologies which may bring potential privacy arguments.

Therefore, for example, X.ticvs does not recommend the technologies that can
identify whether the caller ID (or calling Line ID) of a voice spammer is
spoofed /impersonated or not. We would like to hear whether recent activities
of IETF WG STIR regarding technologies involved in countering voice spam in
telecommunication organizations are impacted before we will be proceeding the
work item to go through ITU-T TAP determination procedure.

We appreciate your feedback in this regard.

Attachment: 1
-Draft Recommendation ITU-T X.ticvs, Technologies involved in countering voice
spam in telecommunication organizations.