@fuznutz04 said in Grandstream HT503 Gateway:
So thinking this through with using the PA-1...
If I use the PA-1, configure it with an extension, and set it to auto answer, then use the RJ11 port to plug into the paging system RJ11 jack (master handset port that delivers dialtone) then the caller should hear dial tone and control their paging like they could previously. Does the PA-1 RJ11 jack function like this, or is it meant to be directly spliced into audio inputs on an amplifier?
I would have to test. I have only used a handset plugged into that for testing at some clients.











