[Asterisk-Dev] cisco 7940/7960 call_stats logging

[John Todd]

Having this type of functionality in the CDR records would really be 
great.  I wish all devices spit out this type of message.  A few 
hours with Perl and RRDTool and some very, very interesting graphs 
could be put together showing call quality based on network range, 
time of day, type of UA, etc.  Also interesting would be the 
statistics from Asterisk's perspective if the media stream were 
flowing through Asterisk.  In other words, in a media stream that 
goes between two endpoints (IAX2, or SIP, or H.323, or whatever) we 
have:

   UA A <-> * <-> UA2

Now, Asterisk can collect some statistics on both legs of those calls 
if we choose to have the media stream go through Asterisk.  Can those 
be collected in a similar way and inserted into the CDR?  Maybe 
another log file, perhaps called "CQDR" should be created that 
captures this data and associated replies from remote devices like 
the Ciscos.  Even a single leg call (between a UA and an Asterisk 
server with a PRI card) should be able to provide those stats from 
the perspective of Asterisk, without any requirement of the UA to 
collect and deliver those stats back to * in the BYE message.

Of course, if we were using RTCP and keeping media streams on the 
server, we could also fetch similar events through RTCP statistics. 
See the archives for some discussion of this last year.

This is (from my non-C-experienced viewpoint) a fairly major 
development task.  However, it does seem obvious that Asterisk needs 
to have some call quality measurement in order to be compared against 
the "big boys" of the VoIP world, if only so that an Asterisk admin 
can point to a graph and say "See?  Call quality is great with my 
free software, and I can identify problem customers almost 
immediately - how is your million-dollar system doing?"  And it's 
something that would be useful and universally applicable across all 
channel types that involved VoIP of some type.  Any takers?  :-)

JT


At 11:46 AM -0400 5/11/04, Jared Mauch wrote:
>
>	Ideally one would log it as well as the endpoint IPs in order
>to determine if there is a network problem with one of the peoples links.
>
>	I have a lot of users behind various NAT devices on
>dsl/cable and want to use this to pinpoint the source of their
>problems.
>
>	- Jared
>
>On Tue, May 11, 2004 at 09:35:23AM -0600, brian k. west wrote:
>>  Now if you can make this a config option per peer and copy it into the
>>  cdr->userfield.
>>
>>  bkw
>>
>>  ----- Original Message -----
>>  From: "Jared Mauch" <jared at puck.nether.net>
>>  To: <asterisk-dev at lists.digium.com>
>>  Cc: "Jared Mauch" <jared at puck.nether.net>
>>  Sent: Tuesday, May 11, 2004 8:02 AM
>>  Subject: Re: [Asterisk-Dev] cisco 7940/7960 call_stats logging
>>
>>
>>  > I've hacked together this which does
>>  > the job..
>>  >
>  > >
>[patch snipped[
>  > >
>>  >
>>  > - Jared
>>  >
>>  > On Fri, Apr 30, 2004 at 12:23:38AM -0400, Jared Mauch wrote:
>>  > >
>>  > > so, in the recent SIP firmware on the Cisco phones,
>>  > > it sends some data in the BYE message that can be used to collect
>>  > > information about the connection.
>>  > >
>>  > > I want to collect and parse this data to help show my users
>>  > > that have bad connections exactly what we see as compared to
>>  > > a non-problematic connection/ISP.
>>  > >
>>  > > Has anyone been looking at this yet?
>>  > >
>>  > >
>> 
>>http://www.cisco.com/en/US/products/sw/voicesw/ps2156/prod_release_note09186a00801d1d80.html#80912
>>  > >
>>  > > I'm also really interested in the jitter and late/lost pkts
>>  > > too..
>>  > >
>  > > > - jared