Hey, how do you use mod_esf with Polycom? The source suggests that it's supported, but the arguments in the documentation seem specific to Linksys. From using the feature directly from a handset, I imagine we have to pass multicast-address, multicast-port and group-number. I've tried every combination and permutation with no luck. The reason I'm doing this is because if the emergency group number is used, the announcements will be at full volume regardless of the hands-free volume setting. And also I'm looking to do this in FS because I'm bridging in another PA system also. Thanks, Peter Hartmann Hartmann Computer Consulting http://blog.hartmanncomputer.com (212)203-8870 If I can't explain it to you in plain language, that means I don't understand it.