Henry,
I believe that's a perception issue, and I would
invite you and other folks to a more attentive read
of the RAQMON documents. They are actually in WGLC,
so it's a good moment, and comments are very
welcome.
RAQMON has nothing to do with network elements like
routers or similar. Endpoints report in real-time
information about the QoS of applications to RAQMON
collectors, which expose an SNMP MIB interface (the
RAQMON MIB). RAQMON supports the concepts of
concurrent applications, session information, and
session history - which were at the core of the
original question. It is complementary to other
performance monitoring methods like RTCP-XR, which
focuses on media monitoring for IP telephony.
Regards,
Dan
-----Original Message-----
From: ietf-bounces(_at_)ietf(_dot_)org
[mailto:ietf-bounces(_at_)ietf(_dot_)org]On
Behalf Of Henry Sinnreich
Sent: 01 November, 2004 8:00 PM
To: Siddiqui, Anwar A (Anwar); Romascanu, Dan
(Dan);
ThomasGal(_at_)LumenVox(_dot_)com; 'Madabhushi Pramod';
sip-implementors-requesto(_at_)cs(_dot_)columbia(_dot_)edu;
sipforum-discussion(_at_)lists(_dot_)su(_dot_)se; ietf(_at_)ietf(_dot_)org
Subject: RE: [Sipforum-discussion] RE: Collecting
media
statistics for SIP calls?
Folks,
Thats what RAQMON doesin a media gnostioc
fashion.
RAQMON is an excellent approach for network
elements
The media statistics for SIP calls are intended at
the
application level in
endpoints, such as when using an Instant Messenger
client for
voice or a
soft phone, or a SIP phone, or a game with VoIP.
Let's not be dogmatic and force techniques that
have been designed for
network elements such as routers, gateways or
servers on to
the application
level in endpoints, where many good practical
reasons have
shown the RTCP
extensions to be the better approach. Live and let
live!
Thanks, Henry
-----Original Message-----
From: sipforum-discussion-admin(_at_)lists(_dot_)su(_dot_)se
[mailto:sipforum-discussion-admin(_at_)lists(_dot_)su(_dot_)se] On
Behalf Of
Siddiqui, Anwar
A (Anwar)
Sent: Monday, November 01, 2004 8:01 AM
To: Romascanu, Dan (Dan); ThomasGal(_at_)LumenVox(_dot_)com;
Madabhushi Pramod;
sip-implementors-requesto(_at_)cs(_dot_)columbia(_dot_)edu;
sipforum-discussion(_at_)lists(_dot_)su(_dot_)se;
ietf(_at_)ietf(_dot_)org
Subject: [Sipforum-discussion] RE: Collecting
media statistics for SIP
calls?
Like you point out its not SIP specific but there
are certain
aspects of SIP
that we need to take care of and RAQMON does that.
let me
clarify; Since it
is SIP the session monitoring is media agnostic
and need to
accomodate that.
Thats what RAQMON doesin a media gnostioc fashion.
Voice Over IP, Video over IP or Fax over IP and
many other
apps fit into the
Framework. See it helps you.
Since it is in WG LAst call, would be very happy
to see what
kind of needs
you have and ensure that it serves the purpose.
Anwar
-----Original Message-----
From: Romascanu, Dan (Dan)
Sent: Monday, November 01, 2004 2:36 AM
To: ThomasGal(_at_)LumenVox(_dot_)com; Madabhushi Pramod;
sip-implementors-requesto(_at_)cs(_dot_)columbia(_dot_)edu;
sipforum-discussion(_at_)lists(_dot_)su(_dot_)se; ietf(_at_)ietf(_dot_)org
Cc: Siddiqui, Anwar A (Anwar)
Subject: RE: Collecting media statistics for SIP
calls?
I agree. This is not a SIP domain specific issue.
See my
previous answer
pointing to the real-time application QoS
monitoring (RAQMON)
work in the
RMON MIB WG.
Regards,
Dan
-----Original Message-----
From: ietf-bounces(_at_)ietf(_dot_)org
[mailto:ietf-bounces(_at_)ietf(_dot_)org]On
Behalf Of Thomas Gal
Sent: 31 October, 2004 11:00 PM
To: 'Madabhushi Pramod';
sip-implementors-requesto(_at_)cs(_dot_)columbia(_dot_)edu;
sipforum-discussion(_at_)lists(_dot_)su(_dot_)se; ietf(_at_)ietf(_dot_)org
Subject: RE: Collecting media statistics for SIP
calls?
I don't think that's really a SIP domain issue,
though
this may have
been adressed somewhere that I'm not aware of.
If you're using RTP to carry the audio than
these statistics are
derived from the RTP stream in the context of
the sender
(with you being the
receiver) and the sender sends SR (Sender
Report) RTCP packets with
interarrival jitter included. Packet count,
fraction lost,
and cumulative
number of packets lost are also transmitted in
these packets.
Latency would
probably be derived from the NTP timestamp if
anything and is
not directly
addressed in RTP to my knowledge. So if you
wanted this data
after the fact
the server would have to maintain that
information, and it
would probably be
a query at the application level, not really
anything to do
with SIP.
-Tom
thomasgal(_at_)lumenvox(_dot_)com
-----Original Message-----
From: ietf-bounces(_at_)ietf(_dot_)org
[mailto:ietf-bounces(_at_)ietf(_dot_)org] On
Behalf Of Madabhushi Pramod
Sent: Friday, October 29, 2004 4:09 PM
To: sip-implementors-requesto(_at_)cs(_dot_)columbia(_dot_)edu;
sipforum-discussion(_at_)lists(_dot_)su(_dot_)se;
ietf(_at_)ietf(_dot_)org
Subject: Collecting media statistics for SIP
calls?
Is there any way by which I call query a SIP
endpoint for
media statictics after call termination. I
would like to know
details like Jitter, latency, packet loss,
packets received,
packets sent etc.
Thanks in advance.
Pramod Madabhushi