asterisk users - Jul 2010 - How to deal with voice SMS - Asterisk 1.4

Hi list,

I face a problem with voice SMSs. In some countries, if you send an SMS 
to a landline number, the mobile operator will record the message and 
then call this number. When picking up the phone you hear "You get an 
SMS from <phone number>, press 1 to listen the message, 2 to repeat the 
sender phone number". If you press 1 you hear the message and after it 
you have the possibility to press 1 to repeat message or 2 to repeat the 
sender phone number.

In a perfect world it's OK, but not here. There is fax detection, users 
send to voicemail directly, companies message with open hours aso. How 
to treat this with Asterisk knowing that such kind of messages are 
sended -at least for some operators- with a special callerID?

At this time, I check the length of the first message, record it message 
for length seconds, then sendDTMF(1) and go to voicemail. All is good 
except that:

- if first message length is changed it's no more working
- same if the behaviour is changed (eg press 2 or 3 or ...)
- but more of all, the callee never know the phone number from the 
person who send the message

Is it possible to know the voicemail file name just being recorded? In 
this case, I could merge my first recorded file with the one of the 
voicemail.

Other solution? How do you guys are handling such situation?

-- 
Daniel

On Thu, 15 Jul 2010, Administrator TOOTAI wrote:
> Hi list,
>
> I face a problem with voice SMSs. In some countries, if you send an SMS
> to a landline number, the mobile operator will record the message and
> then call this number. When picking up the phone you hear "You get an
> SMS from <phone number>, press 1 to listen the message, 2 to repeat
the
> sender phone number". If you press 1 you hear the message and after it
> you have the possibility to press 1 to repeat message or 2 to repeat the
> sender phone number.
>
> In a perfect world it's OK, but not here. There is fax detection, users
> send to voicemail directly, companies message with open hours aso. How
> to treat this with Asterisk knowing that such kind of messages are
> sended -at least for some operators- with a special callerID?
BT in the UK use a specific caller ID when speaking SMS messages to you - 
however you still have 2 choices - you can listen to the message as spoken 
by BT's Digital Dot, or if you instrict them, they'll send the message 
digitally (over the analogue line as FSK tones) so that compatable 
equipment can then display the original message text (e.g. Siemens DECT 
phones)

However, that's just BT. Another provider of landline numbers in the UK 
which I use are experimenting with posting the message to a website/URL so 
that they can then distribute them via email (or text to speech).

And some telco's are just ignoring it entirely.

So I doubt there will be a universal solution.

If your country supports switching to FSK sending, then it might be worth 
while investigating the SMS application and doing it all digitally. You 
could then setup a local number to email map and email the message rather 
than try to "speak" it.


BT's system does produce some "intereting" results... Eks eks eks
Ell Oh
Ell. ;-)

Gordon