I have a Bogen TPU-100. Now the customer wants to separate the 9th and 10th floors. I looked on the Bogen web site and saw a Bogen ZPM3 but it's expensive. Is there anything less expensive that can do this easily? The Cisco VoIP switch is providing the analog line for paging (ATA). Thanks in advance to all of you paging gurus out there.

If you could supply a second output from the cisco you could run that into a separate amp or use a VOX relay to switch the existing amps output