[Asterisk-Users] Re: International callback strategies

[Hakem Taourchi]

Actually, these problematics are classical to many countries: 

1-) If you put russian sim card in a GSM modem, it can receive missed
calls from people who call and hang up and their caller id (most local
mobile operators generally get caller Id). Based on this input from GSM
modem, you can trigger the callback system to call back on that
particular number; 

2-) You can create DID system. That is, you buy 1000 DID, and each
customer has got a dedicated US did. So when your Callback Systems
receive call on DID 101 (without hang up), the callback system knows
upfront who to callback; 

3-) SMS callback is by far very popular these days for countries with
these constraints. Of course, you cannot serve the whole world in your
hand. But generally, there are more GSM subscribers these days than land
line subscribers. 


-----Message d'origine-----
De : asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] De la part de Rich
Adamson
Envoyé : lundi 11 avril 2005 0:53
À : Asterisk Users Mailing List - Non-Commercial Discussion; snacktime
Objet : Re: [Asterisk-Users] Re: International callback strategies

> On Apr 10, 2005 2:21 PM, snacktime <snacktime at gmail.com> wrote:
> > My wife is from Russia, and we have a lot of friends here in the US
> > that have families back in Russia.  While calling Russia is fairly
> > inexpensive, for someone in Russia to be able to call the US is a
> > different matter.   So I'm looking at the best ways to setup a
> > callback system.   Here is what I have so far.
> > 
> > 1.  Call from Russia to US * box using pstn.   Caller enters phone
> > number to call back, hangs up.  This works, but it still results in
a
> > charge to the caller, and due to how long distance works for most in
> > Russia it's a pain to place a long distance call.  You have to call
> > the operator and be put into a queue to place the call.
> > 
> > 2.  Web interface to enter the callback number.   Would work, but
most
> > families in Russia won't have net access.
> > 
> > 3.  Trigger callback via sms.  Works if they have a cell phone, but
> > again most of them don't.
> > 
> > Right now I'm thinking having both 1 & 2 is the best option.
> > 
> > What I would really like is a completely toll free call for the
> > callers in Russia, but I havent' been able to find DID's anywhere.
> > 
> > Chris
> > 
> 
> I forgot to mention,  at least from the regions of Russia I am dealing
> with, caller id just shows up as blocked, so the dial/hangup before
> answer method won't work.

Have them send an email to a specific address, run a script against
the contents of the email, and send a voice message (via a call) to 
whoever they want to talk to. Then that person can initiate the call.


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