In the PRI configuration program go to the menu Gateway configuration > GSM basic parameters and check that Text of SMS at no answer contains "%n" which represents calling party´s number sent to the gateway by PBX.
Log in
Create a new account
Select Your Region and Language
EMEA
Asia | Pacific | Australia
In the PRI configuration program go to the menu Gateway configuration > GSM basic parameters and check that Text of SMS at no answer contains "%n" which represents calling party´s number sent to the gateway by PBX.