Public Address (PA) Phone

[jolouis]

What model Bogen amps are you using?

If you want a native "out of the box" solution Cyberdata makes a 4 port SIP to analog paging gateway, Bogen has their own line of VoIP interfaces, and there are a few others out there (Algo 8301 comes to mind). The problem is they are all quite expensive and typically overkill.. but I suspect since you typically only need one or two per install, they have priced themselves based on low quantity/volume sell rates.

Yealink has demonstrated in the past that they have no desire to do anything analog (hence they don't offer ATAs, FXO gateways, etc) so I doubt they would enter this territory with something like a basic low margin paging interface unfortunately.

So really the options are:
1) Go with a "native" solution like the ones listed, price range about $300-400 US typically per gateway.
2) Use something like the PA1 with your STP1 attenuator ($100-$150 US I'm guessing?)
3) Get a low end Yealink phone and use the handset with the 600Ohm transformer ($40-$70 US?)

The transformer I mentioned is only about 1cm square and it would be trivial to install it and a terminal block or RCA jack, but again I doubt Yealink would do it themselves.