Thanks but no Adtran here.
I do think these stats are indicating an issue, I just don't know how to prove 
it outside Asterisk.

From: ewiel...@nyigc.com
To: tjrl...@live.com; asterisk-users@lists.digium.com
Date: Mon, 19 Jan 2015 13:55:33 -0500
Subject: RE: [asterisk-users] sip show channelstats reliable?

I’ve seen something similar with Adtran SIP gateways.    When a re-invite 
happens the Adtran gets all confused about call stats and marks the 
pre-reinvite leg of the call as losing large numbers of packets.    BTW, IIRC 
reinvites happen when a codec changes or the channel switches to T.38. Also 
Adtran SIP gateways appear not to support OPTIONS packets when running in SIP 
proxy mode, which is very annoying.     At some point I’ll try and arrange a 
slugfest between Digium and Adtran and they can figure out why it doesn’t work. 
From: asterisk-users-boun...@lists.digium.com 
[mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Todd R.
Sent: Monday, January 19, 2015 1:45 PM
To: Asterisk-Users List
Subject: Re: [asterisk-users] sip show channelstats reliable? Additional info: 
At the moment I am running 1.8.x but the other day I was getting the same 
results on 11.x Here is a sample from show channelstats. I do think this 
command is showing that there is trouble between specific IP's and my Asterisk 
box but I don't know if the numbers are accurate and reliable. PeerCall 
IDDurationRecv: PackLost(     %)JitterSend: 
PackLost(%)Jitterx.x.x.x5531341d06b00:07:4200000231230000063836(73.41%)0.000000000231020000000000(0.00%)0.0007
 Peer IP changed to protect the innocent :-) From: tjrl...@live.com
To: asterisk-users@lists.digium.com
Date: Mon, 19 Jan 2015 12:17:25 -0600
Subject: [asterisk-users] sip show channelstats reliable?I am seeing lots of 
lost packets when running the command sip show channelstats at the CLI. There 
are issues across multiple Asterisk servers I am trying to diagnose but 
everything I read seems to point to this command being pretty unreliable. Can I 
trust the info this command shows? I am showing lots of lost packets in sip 
show channelstats but I can't see any packet loss when pinging the same IP's 
to/from. Since I don't 100% control the network my gear is on, I need something 
outside of Asterisk to show the network engineer to convince here and myself 
that there are network issues. All I have is the loss that's shown from this 
command with no real network stats to back it up. Is there a magic command in 
CentOS anyone can recommend to diagnose and match up the issues shown in 
Asterisk using this command? Moving gear around on the network changes the info 
Asterisk shows a LOT. For example, if I point traffic to the main physical 
gateway I get loss to a particular customer's IP (their PBX), if I move it to 
another place on the network (as a VM) their IP is good and other customers 
IP's start showing loss using the channelstats info. Driving me freakin' crazy. 
It does appear there are network issues causing my troubles but I can't get 
help if I can't point to some hard and fast issues outside of Asterisk. The 
only thing I have right now is collissions showing on one of a few of our 
pfSense devices but they are virtual running on XenServer, still this would 
indicate a problem in my opinion. Thanks in advance for any assistance on this 
issue. Stepping back from the ledge now LOL  
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