IVX128 C class with an analog port available. Current set up is a Valcom controller with door phone and strike using a CO line. Problem is there’s a ring delay of 10-15 seconds.

1. Is there a programming (or other) solution to the ringing delay?

2. Is there another solution using analog port (or other method) vs using the CO line? Aside from solving the ring delay customer could use the CO line that's currently dedicated to the door phone/strike

There is no such thing as a 128C. Depending on what system it actually is there are some proprietary options if it is new enough.

The 128 came as a plain 128 or a 128+ or later, a 128e. The systems accommodate the ESI Presence Management RFID Readers which take a digital port. The CO line would be free and there is no delay when accessed.

Rcaman