Originally Posted by edconline

While the plug is the same, you need to ensure the telephone cord has all 6 (or maybe 8) wires, I believe the STI-R display uses them all. Standard old school telephone cable had 4 wires/4 pins in use on the modular connector. Check the # of pins on the connector, that's how many wires need to be inside the cable.

Edit just looked at mine, 6 wires.

Sent from my iPhone using Tapatalk