See »
www.cisco.com/c/en/us/su ··· 747.html .
If it will work for you, the Hot Line config is simplest. However, it will cause trouble if the device needs to "hear" dial tone before dialing.
If you know how many digits the device will send, use e.g.
( <xxxxxxx:4567890> )
Otherwise, try
( <x:4567890>S0 )
Though I'm not sure that will work.
I'm pretty sure that you can't use '.' in the match part of a replacement.
