Phone dialing code for intercom between 2 internal phone extensins?

Answer 1

If you're asking what I think you're asking, it used to be possible to dial a code to make the phone ring back, then both extensions would pick up and can talk.

I don't know the current ringback numbers any more, and there are a brazillion phone companies now, not just AT&T, so it would really depend on your system and who your provider is.

Answer 2

phone dialing code intercom 2 internal phone extensins

Answer 3

Don't think there's a code - think it's a setting on your actual phone. I've just tried it with mine pressing internal and mu additional handset rang!