Installation manual
ESI-50L Programming Manual Function 1: System parameters
D.7
Function 166: CO parameters
Field 1: CO-to-CO conference gain
Adjusts the volume level on CO lines when in a conference
call. Increasing this level to a high setting can cause
excessive noise or feedback on conference calls. This is a
threshold gain level. Doubling or halving the current setting
is in 6dB increments.
Range: 100–32767. Default: 2048.
Warning: Adjusting field 1 while calls are in progress may result in temporary loss of audio.
Field 2: CO playback gain
Adjusts the volume level the system uses to play back recordings, prompts or messages to a CO line. If
this value is set too low, callers into the system may not be able to hear the greeting of a mailbox or the
auto attendant when either answers the call. 6 = 0dB; going up or down from there is in 3dB increments.
Range: 1–12. Default: 6.
Field 3: Trunk-to-trunk CO gain
Adjust this if callers in a trunk-to-trunk connection — either through the “reach-me” feature, manual
connection or auto attendant — are unable to hear or have excessive noise or feedback. 10 = 0 dB; going
up or down from there is in 3dB increments.
Range: 1–12. Default: 11.
Warning: Adjusting field 3 while calls are in progress may result in temporary loss of audio.
Field 4: Delay before connection “beep-beep”
Adjust this if connection tones are played either too soon or too late after the system answers a CO or
intercom call. Sets the amount of time before the connection “beep-beep” is started. Expressed in 1/100s
of seconds.
Range: 10–100 (i.e., 100 ms to 1 second). Default: 20 (i.e., 200 ms).
Field 5: Caller ID gain
Adjust this level if Caller ID information isn’t being displayed. Setting this field tells the system how much
CID signal it needs to determine whether the signal is valid CID. This is a value set in the DSP and is
similar to the fax energy level (see Function 165, field 4, page D.6).
Range: 1–32767. Default: 20000.
Warning: Adjusting field 5 while calls are in progress may result in temporary loss of audio.
Field 6: Dialing off-hold
Enables or disables outside callers’ ability to dial off-hold only when MOH 590 (external source) is
selected. When this is enabled, CO callers will be able to dial extension, department, and mailbox
numbers while on hold. When this is disabled, the system will ignore digits dialed by CO callers. To
enable or disable outside callers’ ability to dial off-hold, press a scroll key to make the desired selection
and then press # to confirm.
Default: Enabled.