I'm looking for a vendor of telephone stations that are suitable for ringdown private line / hotline applications. Of course, I could simply place an average looking SIP desk phone, but it looks like every other telephone even though it is programmed to dial a dedicated number. I'm hoping to find something inexpensive that either has no dial or can be modified in a professional way to indicate to the user that it is a special-purpose phone set. We have been using red analog 2500-like stations connected to SIP gateways, but the phones themselves have anemic ringers that require us to supply ancillary ringers simply to make them loud enough to take seriously. I have already found this line of phones from Guardian Telecom in Calgary, Canada, but they are way more expensive than we can justify for our projects: http://www.guardiantelecom.com/products/V%20OIN/DTR61-V.htm They might be suitable for mines or factories where hazardous materials are involved, however. Our systems go in controlled indoor environments so we don't need the phones to be bullet-proof like those are. Thanks for any pointers! John Boteler communications engineer VoiceInterop Boca Raton, FL