Ironhorse, can you add some more details to your post above and how each works?
I've seen an interesting set up at a Marshall's store where they Use F630, but it is somehow tied into a paging controller.
When they release the page from the overhead, they press the # symbol and you hear the DTMF noise and then a POP when the system disconnects....but then if you are near a Tseries phone, you actually hear the hangup noise through the telephone speaker. This happens because the overhead paging is somehow tied into the paging controller and the user thinks they have hung up when they pressed the # key, but they don't realize they are hanging up over the phone speakers on the Tseries phones. It's really messed up..... I am assuming they aren't using a straight Nortel connection to amplifier....there is some type of paging controller in the middle that seems quite complicated.
What I like about the Nortel paging by itself and why I wanted to try to access it remotely using SIP trunking, is that it begins the page without a pop and when you press RLS, you don't get an analog circuit pop. It's a very clean connection.....and makes for a great sounding paging system. Once you throw an Analog device for paging in there, you get an analog circuit pop unless you use a Gordon Kapes MZ4, which is now discontinudd (hence my name)
The GK had a switch in it, that detected the analog circuit "pop" disconnect noise and silenced it before it went over the speakers....
Little details I know, but if you have a chain of 500 grocery stores that use paging, it's definitely worth thinking about.
