T-Mobile and friends all seem to have a particular voicemail number that serves two purposes. When I call the number from my cell phone, it uses Caller ID or ANI to detect that I’m calling, so it lets me in without a password. However, if a call has been forwarded to that number it will go into message recording mode and record a message from the caller. It also stores the number which called.
It would appear to me that they have two numbers that are passed to them. The originating DID and the called DID. Am I correct here?
I want to create a simple Asterisk system that I can forward my business partner and my voicemail to, but have us each have our own inboxes, but use just one number for the two boxes, providing caller ID and remote checking of messages just like the telcos do. Is this possible?