I am a newbie to the asterisk world.
I have a sip provider for US calls, would like a prefix of 001 added to all phone numbers. I would like the users to dial 8555-555-5555.
How can I setup a dial plan to remove the 8 and add the 001 to the phone number? I know that {exten:1} removes the 8, but how can I add the 001?
Thanks
Eric