[asterisk-users] Special Information Tones

Gordon Henderson gordon+asterisk at drogon.net
Fri Mar 20 02:53:08 CDT 2009


On Fri, 20 Mar 2009, Stephen Davies wrote:

> Hi,
>
> Are you sure that Verizon amswers the call?  They should play that
> message as 'early media' without answering, after which they cam clear
> the call with an appropriate cause code.

Similar issue in the UK and yes, the carriers do answer the call - because 
from that second onward thy are taking revenue.

BT offer a free voicemailbox on landlines too - for the same reason.

Gordon


>
> That would work for you and still give callers the audible ,essage they want.
>
> Steve
>
> On 3/20/09, drew einhorn <drew.einhorn at gmail.com> wrote:
>> I'm having a problem with Verizon Wireless.
>>
>> I would be extremely surprised if I was the only one having this problem.
>>
>> It seems to me that Verizon Wireless might be able to use one of the
>> Special Information Tones to allow us to solve the problem.
>>
>> But I really do not whether my suggestion is compliant with the ITU-T
>> standards.
>>
>> Perhaps someone can give me an expert opinion on whether I should try
>> to get Verizon to implement my suggestion.
>>
>> First I'll describe the problem.
>>
>> I'm trying to implement Single Number Reach.  For example, when a call
>> comes in to one of my DIDs, it simultaneously rings on a couple
>> extensions in my home office and a couple of Verizon Wireless cell
>> phone numbers.  Everything works just the way it is supposed to if the
>> cell phones are powered up, and within the range of a cell tower.
>>
>> The problem is if a cellphone is turned off, or out of range and
>> unable to talk to a cell tower, Verizon is unable to find the
>> cellphone on their network, Verizon answers the call and plays a
>> recorded message, instead of allowing the number to continue ringing,
>> and allowing one of the voip extensions, or another cellphone to
>> answer the call.
>>
>> Verizon really wants to get rid of the call as quickly as possible to
>> free up their equipment to handle other calls.
>>
>> Unfortunately we spend a lot of time in rural areas where there is no
>> cell tower to talk to.  In that case we really someone else to pick up
>> the call.
>>
>> I'm hoping that if Verizon would precede the voice message with one of
>> the Special Information Tones, we could recognize the fact that the
>> call has not really been answer, and continue to ring on the other
>> lines.
>>
>> Two questions.  1) would the approach be compliant with ITU-T
>> standards?  2) Assuming that it is, and we can convince Verizon to
>> implement this. How difficult would it be to configure asterisk to
>> handle this as I suggest?
>>
>> --
>> Drew Einhorn
>>
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>
> -- 
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>
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