3Com 3C10111C - NBX 100 - Modular Exp Base, Руководство по установке

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40 C
HAPTER
1: I
NTRODUCTION
Analog Terminal
Adapters
The single-port Analog Terminal Adapter (ATA) is a desktop box that
connects an analog telephone or fax machine to an NBX system.
Figure 16 Analog Terminal Adapter (3C10400) — Front View
Figure 17 Analog Terminal Adapter (3C10400) — Rear View
The Analog Terminal Adapter (3C10400) has the same functions as the
3C10120B plus these features:
■
Power Over Ethernet (PoE) — The 3C10400 ATA can accept power
over the Ethernet cable. It meets the IEEE 802.3af standard for Power
over Ethernet. It can also accept power from an AC power adapter
plugged into a wall socket.
■
Diagnostic Port — The 3C10400 ATA has an RS232 DB9 connector
to which you can connect a serial cable. Using a terminal emulation
program such as Hyperterm, you can access the ATA and use
diagnostic and troubleshooting commands.
Only qualified 3Com service personnel should use the serial diagnostic
port.
The Analog Terminal Adapter
(3C10400)
has these lights and connectors:
■
Power Light — The light below the icon for power indicates that the
ATA is receiving power.
■
POTS Status Lights (S1, S2, S3) — The POTS (Plain Old Telephone
Service) status lights indicate the status of the Analog Port. S3 turns
on when the analog telephone is in use. S2 blinks briefly every ten
seconds when an analog telephone is connected to the ATA. If no
NBX Analog Terminal Adapter
POTS Status
LAN
Link PC
Link
Power
POTS LAN PC
IOIO1
24 VDC