[cisco-voip] Strange intermittent MoH problem

[Jonathan Charles]

See, I was thinking that MP was somehow mixing with the MOH Multicast
address... try changing it



Jonathan

On Tue, Apr 1, 2008 at 4:19 PM, Ryan Ratliff <rratliff at cisco.com> wrote:
> I'll reserve judgement until a sniffer capture is done.   Even if the
>  unicast RTP stream from MP somehow made it to the wrong IP phone the
>  phone would still have to be listening on that specific RTP port for
>  the user to hear it.
>
>  -Ryan
>
>
>
>  On Apr 1, 2008, at 5:18 PM, Erick Bergquist wrote:
>  Well, The MP is using Unicast for the conference with ports in 5000
>  range on the MP side and phones are using the normal UDP RTP range.
>  The Mcast MoH is using the usual RTP port range also.
>
>  On Tue, Apr 1, 2008 at 3:35 PM, Tim Reimers
>  <treimers at ashevillenc.gov> wrote:
>  > That's what I was thinking might be happening.. same IP/port conflict
>  >  for some as-yet undetermined black magic reason....
>  >
>  >
>  >
>  >  -----Original Message-----
>  >  From: Ryan Ratliff [mailto:rratliff at cisco.com]
>  >  Sent: Tuesday, April 01, 2008 4:25 PM
>  >  To: Erick Bergquist
>  >  Cc: Tim Reimers; cisco-voip at puck-nether.net
>  >  Subject: Re: [cisco-voip] Strange intermittent MoH problem
>  >
>  >  Does MP use multicast audio for it's RTP streams?   Since each MOH
>  >  source gets its own multicast IP address/port if MP is sending
>  > multicast
>  >  for a conference (I have no idea if it does this or not) and it
>  > ends up
>  >  sending on the same IP/port the MOH server is using then this could
>  >  happen.
>  >
>  >  I'd work to get a sniffer capture so you can see what the phone is
>  >  receiving.
>  >
>  >  -Ryan
>  >
>  >  On Apr 1, 2008, at 4:26 PM, Erick Bergquist wrote:
>  >  The mcast config is normal, nothing special being done outside the
>  > norm.
>  >  IP phones hear this as well as outside callers on a H323 gateway
>  > when on
>  >  hold sometimes.
>  >
>  >  On Tue, Apr 1, 2008 at 3:13 PM, Tim Reimers
>  > <treimers at ashevillenc.gov>
>  >  wrote:
>  >> Something in the multicast configuration of the involved layer 2
>  >> devices?
>  >>
>  >>
>  >>
>  >>  -----Original Message-----
>  >>  From: cisco-voip-bounces at puck.nether.net
>  >>  [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Erick
>  >> Bergquist
>  >>  Sent: Tuesday, April 01, 2008 4:06 PM
>  >>  To: Ryan Ratliff
>  >>  Cc: cisco-voip at puck-nether.net
>  >>  Subject: Re: [cisco-voip] Strange intermittent MoH problem
>  >>
>  >>  Both the music and the MP call, but it is clear and not cutting and
>  >> out  every second or so.
>  >>  When I've caught it happening, it seems to be calls where MoH is
>  >> playing  due to a Network Hold event (parked call, etc). I can't get
>  >> it to happen  with a user hold.
>  >>
>  >>  On Tue, Apr 1, 2008 at 2:32 PM, Ryan Ratliff <rratliff at cisco.com>
>  >> wrote:
>  >>> IP phones or PSTN calls?   Sounds like either crosstalk or a random
>  >>>  two devices using the same receive port for RTP and the stream from
>  >>> MP reaching the phone somehow.
>  >>>  Do they hear just the MP audio or both MOH and MP audio alternating
>  >>>  every second or so?   The former is crosstalk, the latter is both
>  >>> RTP
>  >>>  streams reaching the phone on the port the phone is listening on.
>  >>>
>  >>>  -Ryan
>  >>>
>  >>>
>  >>>
>  >>>  On Apr 1, 2008, at 3:07 PM, Erick Bergquist wrote:
>  >>>  Anyone ever see people on hold with Multicast MoH (Network Hold it
>  >>> appears to happen with) hear a meetingplace audio conference call
>  >>> while they are on hold? The CCM and MP are seperate servers with
>  >>> different conference bridges so I'm puzzled how the person on hold
>  >>> hears the MP conferences sometimes. It doesn't happen all the time.
>  >>> Is
>  >>
>  >>> real intermittent.
>  >>>  The Call Manager is version 4.1(3)sr4d and MeetingPlace Enterprise
>  >>  5.4.
>  >>>
>  >>>  Erick
>  >>>  _______________________________________________
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>  >>>  cisco-voip at puck.nether.net
>  >>>  https://puck.nether.net/mailman/listinfo/cisco-voip
>  >>>
>  >>>
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>  >>
>  >
>  >
>  >
>
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