[asterisk-ss7] SS7 SMS

[Steve Kennedy]

On Wed, Apr 12, 2006 at 10:54:50AM +0500, Anton wrote:

> Does anyone know is it possible, using SS7 protocol (or any 
> other actually) to send a message DIRECTLY to a mobile 
> subscriber, avoiding contact with mobile operator's SMS 
> centre? For example operator's SMSC is too busy and SMS 
> message sometimes stays in a queue for hours before getting 
> delivered. So that would not be suitable for notifying 
> about emergency cases via SMS for example.

When a phone initiates an SMS (MO) it tries to establish a direct
connection to another device, it will initiate an HLR look-up etc, and
if it cant deliver to the final device it will go to the destination
user's SMSC for later delivery.

For fixed networks, there's usually a connection into an SMSC, which
will then deliver into a phone on it's own network or try a phone on
another network and if not it get's queued into the other networks SMSC.

Steve

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