Message Control : Poll modem

Message Control : Poll modem

Hello,
for a client using text-to-speech message control, we are using an application with redundant servers, one modem connected to each server.
The goal is to switch servers if modem1 is down, to keep voice messaging functionnality :
=> Is it possible to (and if so, how to) test if modem of main server is still alive ?
(we are using USR5637 modems for our tests)

This is a migrated post! Originally posted on 10.10.2013 by user crl_snef. Please be aware that information can be outdated.