As update, the decision was made to upgrade the alarm system to support tone dialing. (Anyone surprised?) Carlos, this customer also successfully hangs a credit card machine, one fax and two modems on this same analog line we started providing recently. They use a "Commswitch" (?) device to share the line between the fax and modems; the CC machine is simply bridge tapped between the Commswitch and our demark. And of course, the alarm system is set-up for line seizure in front of it all. We provide the analog line with an Adtran IAD that supports both G711 and t.38 on the line. Thank you again to all, Brian -----Original Message----- From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Carlos Alcantar Sent: Wednesday, December 09, 2009 12:15 PM To: VoiceOps at voiceops.org Subject: Re: [VoiceOps] analog pulse dialing solutions On another note have you do you know if the alarm modem will work over voip? With my experience fax works with t.38 normal modem calls not so well. Hit and miss.