[asterisk-biz] Setting up Asterisk conf room per channel on DID

Hello,

I am looking for a few pointers to setup asterisk conf room.

User A calls a local DID #, User B calls a local DID # and they are in the conf room. Our system knows caller IDs for both of these users (fixed). Assuing these DID's have 2 channels each, could it be possible to use both the channels on these DIDs, so User C and User D could be in another conf room with the same DID's but using the remaining channel?

Any pointers, any feedback is welcome.

Thanks