Installation manual

ESI-50L Programming Manual Function 2: CO lines
E.6
Function 23: CO line parameters
Function 231: System CO line receive volume
Many variables can affect the volume of the CO lines. Weak lines can reduce the ESI-50L’s ability to properly
detect DTMF dialed by an outside caller. Conversely, “hot” lines can cause DTMF distortion and/or increase
the opportunity for message talk-off (i. e., messages being cut off before completion). Ideally, a message
recorded from an outside call has the same playback volume as the system prompts.
This function can be used to adjust the gain of the receive volume of the CO lines system-wide.
Range: 0–14 (lowest to highest gain, respectively).
Default: 10.
Function 232: Line disconnect
You can set the lines to detect the open loop interval (if available from the CO) and disconnect more quickly.
This will also allow the system to:
• Drop abandoned calls from hold.
• Reduce the opportunity for abandoned calls to be transferred by the auto attendant.
• Reduce the possibility that abandoned calls could create messages that are either silent or contain CO-
generated tones.
Since open loop intervals generated by the CO may vary in duration, use this function to program the ESI-50L
to less than or equal to the CO open loop interval.
If this programmed value is set unnecessarily low, the ESI-50L may falsely interpret static or a momentary
loop break as an open loop and disconnect a caller on hold or in the process of leaving a message. If this
value is set too high, the ESI-50L may not detect a valid open loop signal for fastest call processing.
Range: 1–255 (10–2,550 ms) (or 0 to turn off open loop detect).
Default: 6 (60ms).