[asterisk-users] Diagnosing call problem

Mitch Claborn mitch_ml at claborn.net
Tue Mar 19 17:59:03 CDT 2013


The network is all on a single LAN segment - there is no NAT involved 
anywhere.  Agents do not have firewall or active anti-virus.  See other 
posts for a SIP trace.


Mitch

On 03/19/2013 12:45 PM, Bharat Lalcheta wrote:
> Firewall can cause problem on client side. Check antivirus or firewall
> on agent pc
> Please provide your network setup for getting better idea of problem
>
> On Mar 19, 2013 10:10 PM, "Mitch Claborn" <mitch_ml at claborn.net
> <mailto:mitch_ml at claborn.net>> wrote:
>
>     rtp debug on the calls that do not work correctly shows packets from
>     server to client only, none from client to server.
>
>     I do have
>
>     nat=no
>     directmedia=no
>
>     in sip.conf.  Are there other settings that might apply?
>
>     This last instance that I looked at, the problem persisted even
>     after restarting the client softphone program.  It was fixed after
>     rebooting the client computer.
>
>     Any ideas on a next step for debugging?  I was thinking I would
>     start a wireshark trace to see if the rtp packets are actually
>     leaving the client computer.
>
>
>
>     Mitch
>
>     On 03/19/2013 08:28 AM, Bharat Lalcheta wrote:
>
>         rtp set debug ip 1.2.3.4
>         where 1.2.3.4 is ip of your particular agent.
>         Say your x agent is not getting voice, rtp debu his ip.
>         You got rtp packet from and to for that ip. If you find rtp
>         packet from
>         your agent to your server ip and rtp packet from your server to
>         agent
>         ip, then no need to check anything in asterisk. Its related to your
>         agent pc problem
>         If you find any single side rtp, then its problem related to nat or
>         direct media etc.
>         if mix monitor is on storage than only you can face problem and
>         thats
>         also very rare. In that case you get voice in break, but it will
>         be from
>         both side not in single side. So, this is not your problem at all.
>         Hope you will get something in rtp debug.
>         R u using any trunk then also check rtp debug between your
>         server and trunk
>         regards,
>
>         Bharat Lalcheta
>
>
>         On Tue, Mar 19, 2013 at 6:39 PM, Mitch Claborn
>         <mitch_ml at claborn.net <mailto:mitch_ml at claborn.net>
>         <mailto:mitch_ml at claborn.net <mailto:mitch_ml at claborn.net>>> wrote:
>
>              Thanks for the suggestions.
>
>              1) directmedia was taking the default of "yes".  I set to "no".
>                Will watch and see.
>
>              2) NAT is turned off (nat=no).  I've never done any RTP
>         debugging.
>                Is that "rtp set debug on ip 1.2.3.4"?  How would I
>         interpret the
>              output?
>
>              3) mixmonitor recordings are stored on a local disk (RAID
>         array,
>              very fast)
>
>              4) This would have to be a last resort option, as there is a
>              business requirement to record the agent calls
>
>
>              Mitch
>
>              On 03/19/2013 12:01 AM, Bharat Lalcheta wrote:
>
>                  1) Check directmedia option in sip. If enabled set it to no
>                  2) Check NAT option and RTP debug in live scenario for any
>                  particular agent
>                  3) if not solved yet, Where are your storing your
>         mixmonitor
>                  recording?
>                  On any storage ? If yes, try to record on local harddisk.
>                  4) Remove mixmonitor and test again
>                  Hope you find can find problem 99% in above scenario.
>                  Regards,
>                  Bharat Lalcheta
>
>                  On Tue, Mar 19, 2013 at 10:21 AM, Satish Barot
>                  <satish4asterisk at gmail.com
>         <mailto:satish4asterisk at gmail.com>
>         <mailto:satish4asterisk at gmail.__com
>         <mailto:satish4asterisk at gmail.com>>
>                  <mailto:satish4asterisk at gmail.
>         <mailto:satish4asterisk at gmail.>____com
>                  <mailto:satish4asterisk at gmail.__com
>         <mailto:satish4asterisk at gmail.com>>>> wrote:
>
>
>                       On Tue, Mar 19, 2013 at 12:00 AM, Mitch Claborn
>                       <mitch_ml at claborn.net
>         <mailto:mitch_ml at claborn.net> <mailto:mitch_ml at claborn.net
>         <mailto:mitch_ml at claborn.net>>
>                  <mailto:mitch_ml at claborn.net
>         <mailto:mitch_ml at claborn.net> <mailto:mitch_ml at claborn.net
>         <mailto:mitch_ml at claborn.net>>>__> wrote:
>
>                           Asterisk 11.1.0
>                           Various soft-phone SIP clients
>                           call center with 10-12 agents online at once using
>                  asterisk queue
>
>                           Occasionally an agent will get a call (or more
>         often a
>                  series of
>                           calls in a row) where neither party can hear
>         the other,
>                  or can
>                           only hear each other sporadically.  A MixMonitor
>                  recording of
>                           the call plays only the caller - none of the
>         agent's
>                  audio is
>                           heard in the recording.
>
>                           Looking for ideas on how to begin to diagnose
>         this or clues
>                           about what might be wrong.
>                           Is there a console command that will show
>         details of a
>                  specific
>                           call in progress that might have some clues?
>
>                           --
>
>                           Mitch
>
>
>                           --
>
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>
>                       Silly guess, If there is no then NAT did you check
>         that your
>                       headphones work properly every time you start the
>                  softphone? This
>                       has happened to me in past.
>
>                       --Satish Barot
>                       Ahmedabad, India.
>
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>
>                  --
>                  Bharat Lalcheta
>
>
>
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>         --
>         Bharat Lalcheta
>
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