explain billing for users, extensions, phone numbers, pls I am lost, and have not found explanations on users, extensions and phone numbers.We only need one central phone number for incoming calls. Calls are routed to a sales queue or a support queue. We need no specific users. We have a handful of people who answer calls from the queue but do not make calls. Then we have 1 person who might make outbound calls. We have no use for direct dial numbers. We also have a SIP phone that is more community based and occasionally will make or receive a call. We are on standard plan.Do I need a user license for people with soft phones who do make external calls? These stations are really not named users, but rather a pool that changes. Would that be virual extensions?Do I need to have any external phone numbers (other than our central number, which does not seem to be billed) ?It looks like we might have an external telephone number for the community phone. Is this Limited Line ?Thanks, and