You can likely change the dial string to prepend a 1 before sending the invite to the carrier. For example on a Cisco SPA device you can use <:1>xxxxxxxxxx to prepend a 1 to a 10-digit number. It looks like the GS equivalent is <=1>xxxxxxxxxx
You can likely change the dial string to prepend a 1 before sending the invite to the carrier. For example on a Cisco SPA device you can use <:1>xxxxxxxxxx to prepend a 1 to a 10-digit number. It looks like the GS equivalent is <=1>xxxxxxxxxx