I have successfully set up asterisk with SIP Trunk and custom caller ID works fine when calling numbers within the United States (SIP Trunk from US).
When calling a US number, the custom caller ID shows up as specified in asterisk config on the recipient phone without country code (+1).
However, I want to do international calls as well with custom caller ID, but when calling international numbers and specifying country code (0045 for Denmark etc), the number shows up as +145. I cannot seem to find a way to get rid of the +1 country code.
Is this possible? I do not have any DID’s as these are only used for incoming calls from my understanding, and I only care about outbound calls.
Do I have to get a SIP Trunk provider from each of the countries I wish to call to set a callerID that will show up without country code on the recipients phone or can I do some magic in the asterisk configuration files?
All help and suggestions/improvements to config files are appreciated as I am new to VoIP.