[cisco-voip] Phones Ring but no voice? CME- to other Router

[Tim Smith]

Hi Robin,

Do you have the H323 bound to a specific loopback or interface?
I wouldnt change to E&M just yet. Your FXO should work. I think you have an
underlying problem that will go across both POTS technologies.
I'd post your configs. Without these, we cant say whether it is configured
correctly and not working, or whether it is missing config hence not
working.

Cheers,

Tim

On Thu, Jun 18, 2009 at 5:31 PM, Robin Clayton <Robin.Clayton at rrca.org.uk>wrote:

>  Hi Guys
>
> I did some more testing last night,
>
> I did the
>
> debug voip cappi inout
>
> there' was stuff logged on both routers but it did not make a whole heap of
> sense to me ( Noob!!! )
>
> I did some other testing,
>
> I set up CME on the other router, so it's now one router with IP & FXO  and
> the other router with just IP.
>
> As before I can call
> IP <-> FXO on the same router works fine
> IP <-> FXO on different routers ends up with no voice
> IP <-> IP on different routers ends up with no voice
>
> If I force the codecs to be wrong then I don't even get a ring on the
> destination phone.
>
> Furthermore, I checked the status of the calls "call stats" on the 7940 and
> it shows
>
> RxType G711a
> TxType G711a
>
> on both phones.
>
> But what is most interesting, is that
>
> RxCnt ( Recived packet Count ) never moves of Zero
> TxCnt ( Transmited packet Count ) increments as time passes during the
> call.
>
>
> So, packets are going but not getting where they are supposed to by the
> looks of things, which is a little odd as they are on the same subnet. And
> the SCCP packets must be going the right way as the phones ring.
>
>
>
> I am going to try an E&M connection between the two routers tonight and see
> if that works at all....
>
>
> Cheers
>
> Rob
>
>
>
>
>
> ===============================
> Robin Clayton
> Network Manager
> Tel: 01228822075
>
>
>
> *Richard Rose Central Academy *
> *Edgehill Road *
> *Carlisle *
> *Cumbria *
> *CA1 3SL *
>
> *Tel: 01228 822060 *
> *Fax: 01228 822061 *
>
> *http://www.richardroseacademies.org/*
>
> >>> Barış Gülten <barisgulten at gmail.com> 18/06/2009 00:06 >>>
>
>
>
> I think, maby be two reason about this issue.
>
> 1-      Ip connectivity problem. Be sure ping each other.
>
> 2-      Codec problem, select same codec each one.
>
>
>
> *From:* cisco-voip-bounces at puck.nether.net [mailto:
> cisco-voip-bounces at puck.nether.net] *On Behalf Of *Robin Clayton
> *Sent:* Monday, June 15, 2009 3:12 PM
> *To:* cisco-voip at puck.nether.net
> *Subject:* Re: [cisco-voip] Phones Ring but no voice? CME- to other Router
>
>
>
> Hi Paul
>
>
>
> I have so far only done
>
>
>
> show call active voice
>
>
>
> which confirmed that calls were being created and torn down.
>
>
>
> I have tried a 2600 but that was really unstable and rebooted on connection
> of the call!!!
>
>
>
> I have downloaded some debugging documents from cisco that I will have a
> scan through.
>
>
>
> Cheers
>
>
>
> Rob
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> *Richard Rose Central Academy *
> *Edgehill Road *
> *Carlisle *
> *Cumbria *
> *CA1 3SL *
>
> *Tel: 01228 822060 *
> *Fax: 01228 822061 *
>
> *http://www.richardroseacademies.org/*
>
> >>> Paul <asobihoudai at yahoo.com> 15/06/2009 12:59 >>>
>
> What troubleshooting steps have you taken thus far?
>
> Have you used 'debug voip ccapi inout'?
>
>
>
>
> ________________________________
> From: Robin Clayton <Robin.Clayton at rrca.org.uk>
> To: cisco-voip at puck.nether.net
> Sent: Monday, June 15, 2009 7:36:44 AM
> Subject: [cisco-voip] Phones Ring but no voice? CME- to other Router
>
>
> Test Lab Setup is.
>
> 1760 with CME4 and 2 7940's
>
> Conected via ethernet to
>
> 2651 with 2 POTS on FXO's
>
>
> Call from 7940 to 7940 work fine
> Call from POTS to POTS work fine
>
> Previously with FXO in the 1760, 7940 to POTS worked fine.
>
> Now when I try to place a call between the CME router and the other router
> or vice versa, the phones ring as expected but then there is no voice
> between the phones.
>
> Has anyone got any ideas as I am realy scratching my head on this now and
> getting frustrated.
>
> Thanks
>
> Robin
>
> ===============================
> Robin Clayton
> Network Manager
> Tel: 01228822075
>
>
>
> Richard Rose Central Academy
> Edgehill Road
> Carlisle
> Cumbria
> CA1 3SL
>
> Tel: 01228 822060
> Fax: 01228 822061
>
> http://www.richardroseacademies.org/
>
>
>
>
>
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