Installation manual

Function 2: CO lines IVX C-Class with voice mail: Installation Manual
E.4
To program the allow and deny exception tables:
1. Enter the numbers for either table, separating each number by #.
Example: For “1-900,” enter 1 9 0 0 #.
Note: Press MUTE/DND to insert a “wild card” digit. A “wild card” digit is needed only when followed
by more numbers; e.g., to allow/deny 1-555, enter just 1 5 5 5 # — however, to allow/deny all
“1+” area codes and 555, enter 1 X X X 5 5 5 # (where X indicates a pressing of MUTE/DND).
Warning: Do not include IVX line access codes (9, 8, or 7) in any of the toll restriction entries.
2. After the last number, enter # # to end the list. The IVX C-Class system will apply the numbers
you enter to their most significant digit.
Example: Entering 1 5 0 5 into the deny exception table tells IVX to deny all “1+” calls to area code
505. But entering 1 5 0 5 5 5 5 8 7 8 7 into the table tells IVX to deny “1+” calls specifically
to [phone] while allowing other “1+505” calls.
To allow information calls, enter into the allow table: 411, 1411, 5551212, 1XXX5551212 (where X
is a wild card digit, entered by using MUTE/DND).
Default: None.
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 IVX C-Class
system’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: 0–12 (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
IVX to less than or equal to the CO open loop interval.
If this programmed value is set unnecessarily low, the IVX C-Class system 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 IVX C-Class system 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).