[cisco-voip] Cisco Call Manager RBT Problem with AS5400 MTP Device

Nick Matthews matthnick at gmail.com
Mon Sep 17 20:22:17 EDT 2012


No IOS will solve this problem. You have to engineer your design to not
require MTPs. Do you know why you have MTPs enabled? It's commonly an
interop problem or a DTMF mismatch (RFC 2833-> out of band (h245 alpha,
sccp, mgcp ntfy, etc).

-nick

On Mon, Sep 17, 2012 at 1:55 AM, He-Man <batuk at bilgisayarkurdu.org> wrote:

>  Hi Nick ,
>
> Previous week a friend in forum; has sent a feedback for this trouble
> privately.There is not a bug , but 5400 routers works with G.711 codec in
> that situation.Is it possible to solve this problem any new IOS version ?
> We must use 5400 router for this topology , how can we configure the
> parameters any more ? Is there any specific configuration , like SIP &
> G.729 or H.323 & G.711 ? Because , we have tried this configurations, both
> of them are working.Although , when we have choose Sıp + G.729 , we took
> release problem, voip calls are disconnect.When we change the H.323 + G.729
> protocol we took ring back tone problem for that Mtp problem.
>
> I hope to solve this problem with your feedbacks.
>
>
> Thanks,
>
>
> AS5x00 doesn't support MTP's.  Only thing that does is VGD-1T3.
>
> -nick
>
> On Sun, Sep 16, 2012 at 10:53 AM, He-Man <batuk at bilgisayarkurdu.org>wrote:
>
>> Do you have any idea ,for this trouble guys ?
>>
>>
>>
>> 13 Eyl 2012 tarihinde 15:55 saatinde, He-Man <batuk at bilgisayarkurdu.org>
>> şunları yazdı:
>>
>> > Hello ,
>> >
>> >  We have CUCM v7.x  and also use with Cisco As5400 gateway to translate
>> calls h323 to sip with G.729 codec.But we have a problem ; when we use
>> AS5400 device for MTP, a problem occurs immediately.We are facing a ring
>> back tone problem.We have look the ethereal traces ,it can't work  fast
>> start so it didn't ring any ring back tone.Is there any bug when call
>> manager use with as5400 mtp device ?
>> >
>> > Scenario is ; location send traffic to CUCM then call manager send
>> packets to As5400 for translating codec then send to softswitch
>> >
>> > We want to use  , Cucm as5400 link with H.323 then we want to use
>> As5400 - SBC link with SIP.How is the situation ? Could you help please. If
>> you want to ask any question , you can.
>> >
>> > Thank you.
>> >
>> > _______________________________________________
>> > cisco-voip mailing list
>> > cisco-voip at puck.nether.net
>> > https://puck.nether.net/mailman/listinfo/cisco-voip
>>
>>
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>
>
>
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