@PGBeattie

It already exists, long since. But it's only available on SIP 'phones. Loop-disconnect signalling doesn't have the protocol for sending the data.

But on a SIP call the SBC can do what is known as a CNAM lookup when a call comes in, and fill in the initial INVITE with 15 characters of looked up information about the caller. There are various people/companies providing/selling CNAM lookup service.

If your 'phone company has switched over your landline to digital, this information (assuming that TPC's equipment is indeed doing the requisite CNAM lookups, which it possibly still isn't for residential subscribers) is now getting as far as a plastic box in your house and being thrown away there; because whilst it is now VoIP to that plastic box, there's no protocol for sending names from that plastic box over the RJ11/BT connectors and 2 wires to your 'phone. Caller ID is sent over that very last leg using DTMF.

#SIP #CNAM #ComputerTelephony #PSTN #CallerID

@keefeglise @bytebro

Actually, from an engineering perspective that's dead easy, as being out of synch is largely the default.

It's synchronizing them that's hard. Digital sound codecs even introduce extra things that have to be compensated for.

#BroadcastEngineering #ComputerTelephony #physics

@Jamatrad @czarelena Advanced user tip: If the 2 minute message precedes an actual menu, and you know this because you've heard it a zillion times, pressing a key to send a DTMF tone often skips it. Dependant from what auto-attendant system that have, of course.
#ComputerTelephony