Tadiran Telecom FlexSet 280D - Silent Monitor; 2-Way

Silent Monitor, 2-Way 163 FlexSet 120/280 User Guide
Display Message Key LED
Silent Monitor, 2-Way Xfer 9, #1981
This feature allows an authorized user, while monitoring a selected port, to hear
both parties of the 2-way conversation. The 2-Way Silent Monitor can be
activated while attempting to call a busy or not answering destination. The
feature can also be activated from an idle station before calling. Once the
chosen station initiates a call, you can start monitoring. While monitoring a
port, your telephone returns a busy signal for all incoming calls.
To activate 2-Way Silent Monitor on a busy call or ringback:
1. Press [MONITOR]. MONITOR ( port# )
or
Press
[XFER] and dial Silent Monitor feature code 9.
To activate 2-Way Silent Monitor from an idle station (before calling):
1. Press [MONITOR] or dial #1981. SILENT MONITOR
2. Dial required port number. The Silent Monitor session will start as soon as MONITOR ( port# )
the dialed port establishes a conversation.
Note: When you hear the reorder tone, one of the two conditions exists:
1) Either the port is protected against monitoring (secured) or
SECURED ( port #)
2) All conference card ports are engaged (no resources). NO RESOURCE