40 CHAPTER 1: INTRODUCTIONAnalog TerminalAdaptersThe single-port Analog Terminal Adapter (ATA) is a desktop box thatconnects an analog telephone or fax machine to an NBX system.Figure 16 Analog Terminal Adapter (3C10400) — Front ViewFigure 17 Analog Terminal Adapter (3C10400) — Rear ViewThe Analog Terminal Adapter (3C10400) has the same functions as the3C10120B plus these features:■ Power Over Ethernet (PoE) — The 3C10400 ATA can accept powerover the Ethernet cable. It meets the IEEE 802.3af standard for Powerover Ethernet. It can also accept power from an AC power adapterplugged into a wall socket.■ Diagnostic Port — The 3C10400 ATA has an RS232 DB9 connectorto which you can connect a serial cable. Using a terminal emulationprogram such as Hyperterm, you can access the ATA and usediagnostic and troubleshooting commands.Only qualified 3Com service personnel should use the serial diagnosticport.The Analog Terminal Adapter (3C10400) has these lights and connectors:■ Power Light — The light below the icon for power indicates that theATA is receiving power.■ POTS Status Lights (S1, S2, S3) — The POTS (Plain Old TelephoneService) status lights indicate the status of the Analog Port. S3 turnson when the analog telephone is in use. S2 blinks briefly every tenseconds when an analog telephone is connected to the ATA. If noNBX Analog Terminal AdapterPOTS StatusLANLinkPCLinkPowerPOTS LAN PCIOIO124 VDC
