DTMF tone duration length ....

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stefanc
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DTMF tone duration length ....

Post by stefanc » 13 Nov 2017 08:28

Hi !

We have a customer that have problem with the door phone, it doesn't recognize the tones from answered phones. The supplier of the door
phone claims that the tone duration is to short, the system is 10.1.1 with patch 38.

I've searched into the chapter timers in sysdoc, but found none that was appropriate.

I've listened to the tones, sometimes the tone is clear, sometimes is just a blip.

Is there any way to increase the tone duration of a release 10 system.

//Regards

Stefan

mgsox
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Re: DTMF tone duration length ....

Post by mgsox » 13 Nov 2017 09:10

as far as i know DTMF tones are universal, so the duration cannot be changed, beside if you change the duration to "fit" the door phone needs you will have problems when you make an external call to a call center that uses DTMF.
in any case you should be careful when you change the duration of any tone.

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stefanc
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Re: DTMF tone duration length ....

Post by stefanc » 13 Nov 2017 09:19

yepp, you are completely right in that, but .... can it be done ?

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Re: DTMF tone duration length ....

Post by sadim » 13 Nov 2017 11:17

Hi,
"The supplier of the door phone claims that the tone duration is to short"-> so, he measured it. What was the measured value?
Regards

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Re: DTMF tone duration length ....

Post by stefanc » 13 Nov 2017 11:52

sadim wrote:Hi,
"The supplier of the door phone claims that the tone duration is to short"-> so, he measured it. What was the measured value?
Regards
Yeah... he listened at it , but to be honest, it is a very short tone, often just a short blip, very difficult to hear the actual tone.

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Re: DTMF tone duration length ....

Post by vad » 13 Nov 2017 23:50

You have door phone - PBX - internal phone.
Internal phone - digital/analogue/IP? if you use analogue phone - DTMF sended from phone (not by PBX).

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Re: DTMF tone duration length ....

Post by stefanc » 14 Nov 2017 03:29

vad wrote:You have door phone - PBX - internal phone.
Internal phone - digital/analogue/IP? if you use analogue phone - DTMF sended from phone (not by PBX).
It is a 4039 or 4038/68, eg UA or IP, all the same. All attached on shelf via INTIP2

Thanks for answering

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Re: DTMF tone duration length ....

Post by vad » 14 Nov 2017 05:31

Do you have analogue (DTMF) internal set? With this set - door phone works?
Door phone - analogue and in the same shelf with digital set?

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Re: DTMF tone duration length ....

Post by stefanc » 14 Nov 2017 06:46

vad wrote:Do you have analogue (DTMF) internal set? With this set - door phone works?
Door phone - analogue and in the same shelf with digital set?
Nope, the door phone is connected via external operator. The answered phone"s DTMF is sent out via PRA.

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cavagnaro
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Re: DTMF tone duration length ....

Post by cavagnaro » 14 Nov 2017 07:15

Can you try internally? Discard the external issue as a point of possible failure

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