The only real phone line in my house is a (17Q) coin service line. This is a proper coin-line designed for use with a standard telco payphone. I have it because I collect vintage phones and wanted my Western Electric 2C2 payphone to work properly. Eventually I'm going to move it to Asterisk once I've hacked the line card driver to recognize coin tones.
Anyway, I've told others in my household that the payphone is the best bet for 911 calls (since calls placed from other phones in the house are completed by various VoIP services).
I wonder, though, if the PSAP is going to see "public telephone" (Class of Service = "27") on their screen if we call 911 from the coin line. I realize that they'll have my phyiscal address, but if the PSAP tells the emergency service provider that the call was from a "public telephone" my concern is that that might delay the response since I live in a completely residential neighborhood of single-family houses and nobody driving by would think there's a "public telephone" in this house.
What do y'all think?