Well, crud... I haven't tested the service in about a year. Best you can do is grab an old analog phone, dial 911, see what happens.
If you get a dispatcher, handle it how you see fit. If that doesn't work, try a newer digital one. Since you'd need to get to the keypad for your mod, use a large phone, you can couple acoustically to the speaker and mic, though most of the ones I've scrapped have contact pads for the speaker, easy to solder to, and the mic, usually surface mount has two small tabs sticking out from under the assembly, not too difficult to work with. Kurt
