Instruction manual

Features
The red LEDs for each DSS button are used to determine whether a user is on a
call (off-hook), has no call active (on-hook), or is using Do Not Disturb. The LED
indication (on) is not different for off-hook and Do Not Disturb; therefore, the
system operator cannot determine whether the user is on a call or has activated
Do Not Disturb. For a calling group extension on a DSS button, the red LED
indicates the status of the queue. For a pool dial-out code on a DSS button, the
red LED indicates trunk availability.
Table 10 shows the meanings of the red LEDs for DSS buttons while the system
operator position is in the normal operation and Message Status is not active.
Table 10. LED Meanings for Normal Call-Handling Operation
LED
Extension
Status
Type Meaning
Off
User
Line/trunk
number
Pool dial-out
code
Calling Group
Paging Group
Operator Park
Zone
ARS, Remote
Access,
Listed
Directory
Number
The person is not on the telephone
and is not using Do Not Disturb.
The line/trunk is not in use.
At least one trunk is available for
making an outside call.
The calling group queue is below
the programmed threshold.
The group is available for making a
group announcement.
A call is not parked on this park
zone code.
Not applicable; red LED is always
off.
Continued on next page
Direct Station Selector—MLX 135