Chapter 5. Trunks And Extensions; Maintenance Switches - Panasonic DBS 576 Technical Manual

Chapter 5. Trunks and Extensions

This chapter explains how to connect trunks and dedicated lines, how to connect
different types of digital and analog extensions, and how to mount telephones on the
wall.

Maintenance Switches

uidelines
• The following cards can be removed from and replaced in their slots even when
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CAUTION:
• Check that the line busy lamp is off before removing the card. If the
lamp is on, the line will be disconnected when the card is removed.
• Check that the maintenance switch is off. After replacing the card in its
slot on completion of the maintenance work.
• Never attempt to remove any of the following cards while the system is
operating:
• CPC96 card
• CPC576 card
• TSW576 card
• CBL card
• ACD card
• VPU/4 card
the system is operating (power is on) provided the maintenance switch is set to
ON (up).
LTRK/8 card
•
LGTRK/8 card
•
E&M/4 card
•
DIDTR8 card
•
TBRI/4 card
•
PRI/23 card
•
T1 card
•
When the maintenance switch is on, the cards are in the following state:
Incoming calls are ignored;
•
Outgoing calls are prevented;
•
The line is disconnected on completion of any current call.
•
That is, further incoming calls are ignored and outgoing calls are prevented as
soon as any current call is completed.
The cards can be removed as soon as all circuits on the card are idle and the busy
lamps are off.
DBS 576 (USA), issued 6/2/98
• CPC288 card
TSW288 card
•
CBLDBS card
•
SCC card
•
VPU/8 card
•
VSSC card
•
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