In order for the TEL-14 to hang up the line when a call is finished, or if the line is taken off hook and then no action is taken, the TEL-14 needs to be able to recognize the off hook/disconnect tone.
Different regions use a different frequency tone in this situation and so the TEL-14 must be setup to listen for your region’s tones.
To change this, remove the TEL-14 front card carefully from the matrix and locate the set of dip switches labelled S7:
Use the printed labels on the circuit board as the switch numbers.
Please ignore those printed on the dip switches themselves.
The TEL-14 disconnect tone is set to North America by default.