3Com V3000 ANALOG, Installation Manual

Page: 52 / 252

52 C
HAPTER
1: I
NTRODUCTION
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On – Seek service assistance
■
Off – Operating normally
■
— The power connector is a 6-pin, circular, Mini-DIN type. Power
from the external 48V D.C. supply is fed into the card via this
connector to power the handsets through the RJ21x 50-way line
connector.
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On – External power ok
■
Off – External power failed
■
Channels — Channel LEDs are normally off, and all LEDs flash
approximately every 10 seconds
■
On – Handset off-hook (for example, a call in progress)
■
Off – Handset on-hook
■
10101 — The 9-pin D-type straight-through connector is used to
connect to the RS232 Diagnostic Port. This connector allows engineers
to perform tests on the card or to upgrade the card software.
■
RJ21x line connector — The RJ21x 50-way line connector is used to
connect the
Meridian
handsets to the card through the existing punch
block and handset wiring. The pins are paired vertically on the
connector, such that line 1 is connected to pins 1 and 26, line 2 is
connected to pins 2 and 27, and so on.
Analog Terminal
Adapter
The single-port Analog Terminal Adapter (ATA) is a desktop box that
connects a single analog telephone or fax machine to an NBX system.
Figure 20 Analog Terminal Adapter (3C10400 and 3C10400B) — Front View
NBX Analog Terminal Adapter
POTS Status
LAN
Link
PC
Link
Power