Dialog 4425 (DBC 425) Question

[FrancisPogi]

Hi Guys,

Any ideas on how this IP phone sends information about the digits pressed by the calling party? Is it thru DTMF or H.425? Do I have to configure it to do so? Thanks in advance.

Francis

 

[whosrdaddy]

if IP phone is in speech, digits are sent through DTMF,like a DTS.

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[FrancisPogi]

Hi whosrdaddy,

Thanks for the response.

What do you mean by "if IP phone is in speech, digits are sent through DTMF,like a DTS". I'm getting confused on this. Do I have to configure it?

 

[whosrdaddy]

no, you don't have to configure anything, it works like a normal DTS (Digital phone)

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What You See Is What You Get
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[FrancisPogi]

hi whosrdaddy,

Thanks for the response.

It's weird because my IP voicemail application (H.323) can't detect the that signals everytime the caller pressed digits from the IP phone. I'm using intel Host media processing FYI.

Any thoughts?

Francis

 

[fouesnant]

Hi

May be your equipement is not fast enough?
I remember that one DTMF tone could be send at 70ms
If 2 DTMF are sent in sequence (let say a stored number on IPphone), the silent in between could be 70ms also.

 

[FrancisPogi]

Hi fouesnant,

Thanks for the response. Is there a way to modify it's speed? It's weird because my application responds well to DTMF when I use Microsoft Netmeeting but when I use the IP phone it can't sense it.

Any ideas?
Francis

 

[fouesnant]

Hi Francis

I really don't know. I guess it is encoded in the IPphone FW.

 

[whosrdaddy]

i believe you must push the tones button before you can send DTMF

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What You See Is What You Get
Never underestimate tha powah of tha google!