We've got a location running CME and have trunks setup between the locations. A person at either end may dial an access code then the 4 digit extension of the person they wish to reach.
We've had a request to setup an external number that someone from their home could call and do the same thing. I'm unsure how to setup that kind of access in CME.
This is an example: A person needs to call in to a confrence call from home. They dial the pre-setup DID and then dial the access code and the 4 digit extension of the call.
I'm not sure if something else has to be in-between to answer the call or not.