[asterisk-users] IVR extension dialing error

Thu Jun 24 17:13:42 CDT 2010

Dear, just a short question:

If I use G.711a and G.711b codecs between the Portech GSM Gateway and
Asterisk 1.4.23, what DTMF mode is better to use in both sides if a
mobile phone call the GSM Gateway in order to contact an internal IP
extension (Mobile to LAN scenario):

RFC2238
Inband
SIP INFO

What are the requisites to choose among them ????

Thanks in advance

Alejandro

2010/6/18 Danny Nicholas <danny at debsinc.com>:
> I would definitely change the prompt from 1 to 0.  It is not an advisable
> practice to have an IVR selection that can be misinterpreted like this.
> Assuming that all of your extensions are in 1000-1999, 2 for the operator
> would be just as good; the important thing is that you don't have a single
> digit extension 1.
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Alejandro
> Cabrera Obed
> Sent: Friday, June 18, 2010 7:57 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] IVR extension dialing error
>
> Hi, I tell you I've made some calls from a land-phone to my IVR in
> order to avoid the possible poor quality of cell phone's DTMF, and
> when I called extension 1003 I was connected to extension 1000
> again....the same error.
>
> My IVR says "dial 1 to connect to operator or dial the extension in
> case you know".....and my extension ranges is 1000-1999, so I think it
> could be a problem that extensions and IVR option start with the same
> digit: 1.
>
> When I'll be at work I'm thinking in modify the IVR speech in order to
> say "dial 0 to connect to operator.....", and not "dial 1 to connect
> to operator....", so IVR option and extensions will not start with the
> same digit.
>
> Do you think this may be the problem ???
>
> Thanks a lot and sorry for my interruption.
>
> Alejandro
>
> 2010/6/17 Danny Nicholas <danny at debsinc.com>:
>> According to this link
>> http://www.smallnetbuilder.com/content/view/30469/82/1/2/
>>
>> You probably want to make 80 be 120. This is a millisecond delay value, so
>> the 500 value is a "give it up" proposition; 200 might be doable for your
>> outliers.
>>
>> -----Original Message-----
>> From: asterisk-users-bounces at lists.digium.com
>> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Alejandro
>> Cabrera Obed
>> Sent: Thursday, June 17, 2010 12:08 PM
>> To: Asterisk Users Mailing List - Non-Commercial Discussion
>> Subject: Re: [asterisk-users] IVR extension dialing error
>>
>> OK, now I understand..but just one more question...In the DTMF
>> settings tab from the GSM gateway manager I have this line:
>>
>> Mobile DTMF debounce: 80 (range: 40 ~ 500, default: 80 ) step: 10ms
>>
>> What does this setting really mean and do I have to modify the current
> value
>> ???
>>
>> Final thanks :)
>>
>> 2010/6/17 Zeeshan Zakaria <zishanov at gmail.com>:
>>> I once setup a callback system for someone and we had these DTMF issues
> on
>>> constant basis, and all the complains were from cell phone users. At that
>>> time I found out that even my own cellphone would not DTMF correctly from
>>> certain locations, including my home, but would work perfectly fine from
>> my
>>> work location. Probably times of the day matters too, but yes, calling
>> from
>>> cell phones does result in DTMF issues, and the reason is that it is just
>>> the audio signals, which get distorted based on various factors like the
>>> signal strength, cell tower transmission quality, transcodings, etc.
>>>
>>> Zeeshan A Zakaria
>>>
>>> --
>>> www.ilovetovoip.com
>>>
>>> On 2010-06-17 11:25 AM, "Alejandro Cabrera Obed" <aco1967 at gmail.com>
>> wrote:
>>>
>>> Danny, so you say it's a problem of the cell phone and not the
>>> Astreisk or GSM Gateway ???
>>>
>>> OK, in this case if I call from a fixed phone (not a cell phone) to
>>> the IVR, the DTMF quality problem will not be present....this may be a
>>> good test, isn't it ??? Or do you suggest another test I can implement
>>> ???
>>>
>>> Thanks again
>>>
>>> Alejandro
>>>
>>> 2010/6/17 Danny Nicholas <danny at debsinc.com>:
>>>
>>>> The physical location of the phone (access to towers) can vastly affect
>>>> the
>>>> quality of DTMF pass...
>>>
>>> --
>>> Alejandro Cabrera Obed
>>> aco1967 at gmail.com
>>> www.alejandrocabrera.com.ar
>>>
>>> --
>>> _____________________________________________________________________
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>>
>>
>>
>> --
>> Alejandro Cabrera Obed
>> aco1967 at gmail.com
>> www.alejandrocabrera.com.ar
>>
>> --
>> _____________________________________________________________________
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>
>
>
> --
> Alejandro Cabrera Obed
> aco1967 at gmail.com
> www.alejandrocabrera.com.ar
>
> --
> _____________________________________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
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>
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-- 
Alejandro Cabrera Obed
aco1967 at gmail.com
www.alejandrocabrera.com.ar