ok, first of all, if you press 635-0000, or 638-0000 you get a test that
says '250 XXX'. on both my phone lines it says '250-587' and same with
two other lines i tried. i am now doing research on these test lines. i
have never found a ring back number for terrace, but if you dial your
own phone number, you will hear a short beep every four seconds, and
when you hang up, you phone will start to ring. then when you pick up,
the same beeping noise is heard. i beleve that this is 250s ring back
system. as for loop lines, all of the ones that i have ever heard of in
canada now, are blocked. You can also try 615-0000. i am constanly
looking for test numbers, so if you find one, or two, or more, send them
too me, and ill post them. your reward for doing this will be: your name
going up on my faq page!! ok, its not much.