I have used a "dumb" phone in place of a pager for years. After hours, our office phone number is forwarded to a Verizon voice mail. This can be set to use a function called "special delivery" to dial a phone number when a message is left. It redials 3 times to notify you if you don't retrieve the message. When the cell rings, you can answer it and retrieve the message or simply look at the caller ID, see that it is the voice mail number and use any other phone to call in.
