[cisco-voip] In-band DTMF with Cisco Call Manager

[Wes Sisk]

The software based MTP on CCM cannot do this.  I am awaiting response from
hardware MTP contacts.

/Wes

> -----Original Message-----
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net]On Behalf Of Wes Sisk
> Sent: Tuesday, July 20, 2004 3:43 PM
> To: Jim Brunetti
> Cc: cisco-voip at puck.nether.net
> Subject: RE: [cisco-voip] In-band DTMF with Cisco Call Manager
>
>
> Jim,
>
> Can you provide more details of your setup and info about your
> PSTN gateway?
>
> If it is using h323 to communicate with CCM, we may be able to set "mtp
> required" on the gateway and have an MTP take the OOB dtmf events
> and insert
> them into the audio stream.  MAYBE.
>
> /Wes
>
> > -----Original Message-----
> > From: Jim Brunetti [mailto:jim.brunetti at usa.net]
> > Sent: Thursday, July 15, 2004 7:48 AM
> > To: Jim Brunetti; Wes Sisk; Jim Brunetti
> > Cc: cisco-voip at puck.nether.net
> > Subject: Re: [cisco-voip] In-band DTMF with Cisco Call Manager
> >
> >
> > We were running the test using speakerphone just as you suspected.
> >
> > One thing we have just tried is to use Cisco's new IP-IP Gateway
> > software and
> > install a 7200 between our Nextone and
> > the CCM (make the Cisco 7200 be an IP-IP gateway instead of an IP-PSTN
> > gateway) but are still having problems.  Has anyone used this software
> > before?  Is it capable of terminating DTMF-relay on the one IP leg
> > facing the CCM and originating inband DTMF on the other leg facing our
> > Sonus?
> >
> >
> > Jim Brunetti <jim.brunetti at usa.net> wrote:
> >
> > > Thanks, Wes.  I'm pretty sure the phones are 7960G phones.  I
> > will find out
> > if
> > > they were testing using the speakerphone.  Supposedly things stopped
> > working
> > > after some patches were applied to the CCM, so this explanation
> > makes sense.
> >
> > > In the meantime, I have heard that using a 7200 as a Voice Gateway in
> > between
> > > the CCM and my Nextone/Sonus could help with this problem.  Any
> > recommended
> > > IOS versions for a 7204?
> > >
> > > Wes Sisk <wsisk at cisco.com> wrote:
> > >
> > > > Jim,
> > > >
> > > > Very old 7960 phone loads generated the true DTMF tone when using
> > > > speakerphone so that output of the speaker was picked up by
> > the mic and
> > > > the tone appeared inband.  We changed the speaker tone to be
> > a generic
> > > > "beep" instead of the true DTMF tone becuase some destinations were
> > > > detecting doubld DTMF OOB and in band.
> > > >
> > > > Other than this, I have never heard of the 7960 sending
> digits inband
> > > > when using SCCP phone loads.  The SIP and MGCP phone loads
> > for the 7960
> > > > appear to have this option.
> > > >
> > > > Can you clarify what model ipphones you are using?
> > > >
> > > > /Wes
> > > >
> > > > Jim Brunetti wrote:
> > > >
> > > > >The problem is actually between my PSTN gateway and the CCM (I'm
> > guessing).
> > >
> > > > >The CCM is doing dtmf-relay which my gateway does not support.  The
> > weird
> > > > >thing about all of this is that when we first set everything
> > up, we were
> > > > >seeing inband DTMF from the phone/CCM and everything
> worked great.  A
> > few
> > > days
> > > > >later it magically changed to H245 and no one knows why or
> > how to switch
> > > it
> > > > >back.
> > > > >
> > > > >"Wes Sisk" <wsisk at cisco.com> wrote:
> > > > >
> > > > >
> > > > >
> > > > >>AFAIK, It's not possible.  All dtmf events must be sent as
> > SCCP events
> > to
> > > > >>CCM for IPPhones.
> > > > >>
> > > > >>/Wes
> > > > >>
> > > > >>
> > > > >>
> > > > >>>-----Original Message-----
> > > > >>>From: cisco-voip-bounces at puck.nether.net
> > > > >>>[mailto:cisco-voip-bounces at puck.nether.net]On Behalf Of
> > Jim Brunetti
> > > > >>>Sent: Saturday, July 10, 2004 11:49 AM
> > > > >>>To: cisco-voip at puck.nether.net
> > > > >>>Subject: [cisco-voip] In-band DTMF with Cisco Call Manager
> > > > >>>
> > > > >>>
> > > > >>>
> > > > >>>Anyone know how to set DTMF signaling to be in-band using
> > Call Manager
> > > > >>>3.3 and a 7960 IP phone? The phone is using Skinny to talk
> > to the Call
> > > > >>>Manager.
> > > > >>>
> > > > >>>
> > > > >>>
> > > > >>>
> > > > >>>
> > > > >>>jim.brunetti at usa.net
> > > > >>>
> > > > >>>
> > > > >>>
> > > > >>>_______________________________________________
> > > > >>>cisco-voip mailing list
> > > > >>>cisco-voip at puck.nether.net
> > > > >>>https://puck.nether.net/mailman/listinfo/cisco-voip
> > > > >>>
> > > > >>>
> > > > >>
> > > > >>
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >jim.brunetti at usa.net
> > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > jim.brunetti at usa.net
> > >
> > >
> > >
> >
> >
> >
> >
> >
> >
> > jim.brunetti at usa.net
> >
> >
>
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