On Jun 22, 2008, at 6:51 PM, Kevin P. Fleming wrote: > Jim Duda wrote: > >> My Telco service is Verizon FIOS. I know that MWI is working, >> because >> if I pick up an analog phone set attached to the line, I can hear the >> stutter tone. > > The MWI detection in chan_zap/chan_dahdi is not for stutter tone; it > supports either FSK MWI pulses (slimier to Caller ID, but transmitted > during idle times on the line), or neon-style pulses of AC. > > Unless your telco service specifically supports phones that can > display > whether you have new messages (and how many), you don't have the right > kind of MWI signaling from the telco. It is doubtful that *any* > residential phone service will work in the way that chan_zap is > expecting; FSK and neon MWI signaling are generated by legacy PBX > systems with analog ports, not telco (CO) switches. > >
Actually CLASS MWI, ie FSK, is a standard feature of Telco COs. It may be used with stutter, they are not exclusive, check with Verizon. I designed and manufactured these 20 years ago and Kevin is correct it uses same technology as CallerID known as CLASS. The analog styles, which I also designed and manufactured, are only found on PBX systems. There are several flavors that all signal based on some voltage mechanism. _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
