[Asterisk-Users] Asterisk SMS configuration

[Wilson Pickett]

> I'm dialling 17094009, as instructed in the BT documentation.  Where
> does the extra digit go?

Quoting the wiki at http://www.voip-info.org/wiki-Asterisk+cmd+Sms

"The specification for landline SMS allows for the possibility of more
than one device on a single landline. These can be configured with Sub
addresses which are a single digit. To send a message to a specific
device the message is sent to the landline number with an extra digit
appended to the end. The telco can define a default sub address (9 in
the UK) which is used when the extra digit is not appended to the end.
When the call comes in, part of the calling line ID is the sub
address, so that only one device on the line answers the call and
receives the message.

Sub addresses also work for outgoing messages. Part of the number
called by the device to send a message is its sub address. Sending
from the default sub address (9 in the UK) means the message is
delivered with the sender being the normal landline number. Sending
from any other sub address makes the sender the landline number with
an extra digit on the end.

Using asterisk, you can make use of the sub addresses for sending and
receiving messages. Using DDI (DID, i.e. multiple numbers on the line
on ISDN) you can also make use of many different numbers for SMS. "