I have been doing some reading and am a bit confused about one thing.
Can I purchase several VoIP accounts and build up my outgoing extensions this way? but still have my main dial in number free to use? even if that provider I use for dial ins only gives me 2 simultaneous connections? Can the call get passed off to another trunk/extension thus freeing up that original dialin trunk that the person used to access the system?
An explanation would be great, but really just looking to be pointed in the right direction to read more on this.