External Paging

Hello, I am currently running Hobbit 4.2.1 on Fedora Core 4\Compaq DL380. Everything is working great with Hobbit and I'm onto the next step of setting up paging using a modem to dial out to our blackberries\cell phones. I would greatly appreciate any suggestions on how I can get this started or on how anyone has their paging environment setup. Thanks much, bill