Problem UC520 gsm gateway

[escomservices1]

hello;

i have an ipbx cisco u520.

i have 1 pstn line and 1 gsm gateway.

When i call a mobile number and the line (gsm gateway)is busy , the call is established from the pstn line.

i would like that the calls to mobile phone will be made only from the gsm gateway.

finally i'm sorry for my bad english.

Best regards.

[paolo bevilacqua]

You need to configure dial-peer so that mobile numbers only go to GSM gateway.

You can search cisco.com to learn yourself, or ask somebody with the needed experience to do that for you. The latter is isually the best choice, as it save times and frustration.