[asterisk-users] Send cell phone #VM waiting, just like cell carrier

[Peter Lindquist]

Matt Watson wrote:
> On June 22, 2008 11:32:56 am OCG Technical Support wrote:
>   
>> Well, I realize that there must be some proprietary protocol between the
>> carrier and the phone, since they have a dedicate spot on the cell screen
>> for # VM waiting...
>>
>> As for an SMS message, is there a module/app which allows easy SMS
>> messaging?  (I looked a couple of years ago but only found commercial
>> modules)
>>     
>
> Don't quote me on this, but I think that the standard voicemail notifications 
> that cell phones recieve are just a regular SMS message but in some kind of 
> special format that the phone recognizes and does not display as a regular 
> text message.
>
> I had an unlocked Moto razr at one point that didn't come from my cell 
> provider, at one point while I had it the VM notifications didn;t really 
> work... everytime i got a VM I'd get a SMS message with special characters in 
> the message body.  I sort of chalked it up to not using the branded firmware 
> that my provider would have put on my phone if the phone had come from them.
>
> At any rate, if I'm right, and you can find some information on that protocol, 
> it might turn out to be alot easier than you think.
>
> and btw - Asterisk ships with app_sms but depending on your country it may not 
> really be what you are looking for.  I could be very very wrong here, but I 
> don't believe Asterisk has a great implementation for text messaging in North 
> America.  This is probably because every cell carrier seems to do it just a 
> little bit differently.
>
> Depending on your needs however, most cell carriers offer email-to-SMS 
> gateways so you can just send an email to 
> <yourcellnumber>@<yourcellcarrier>.com kind of thing... if you need it to 
> work from a machine with no Internet access however, then you might need to 
> do something like use a dialup modem to dial into your cell carriers TAP 
> number (provided they offer one and you can either explain to the tier 1 
> support guy what you are looking for, or you can find the number on the 
> internet).
>
> However again, I don;t believe Asterisk has any interface for TAP, but in 
> theory you could use something like the "sendpage" daemon to handle the TAP 
> stuff and then have Asterisk hand off the text messages to sendpage using a 
> simple bash script and the System() application... if Asterisk had an 
> implementation for SNPP then you could send your messages to sendpage that 
> way - also *some* cell providers even offer SNPP gateways over the internet, 
> but again good luck explaining to the tech what you want.
>
> I've actually been toying with the idea of creating a res_snpp or something 
> for this purpose since I already use sendpage for our server 
> monitoring/alerting system to page me on my cell via dialup TAP (so my 
> monitoring server can still page me in the event of an internet outage).
>
> Anyhow, sorry that message got a bit lengthy pretty fast!
>
>   
Check out http://www.ihub.com which have lots of information regarding 
SMS messages, you can also use their software as a trial for 60 days to 
see it in action.

//Peter
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