AC International MTA128ST-USB manual LED Indicators

MultiModem ISDN User Guide

LED Indicators

The ten LED indicators on the front panel (see Figure 2-4) of the MTA128ST-USB report status and line activity.

USB ISDN Modem with Analog Port

TD RD LS B1 B2 TR OH 128 P1 P2

TD

RD

LS

B1

B2

TR

Figure 2-4: Front Panel

Transmit Data

Flashes when data is being transmitted (on for a space, off for a mark).

Receive Data

Flashes when data is being received (on for a space, off for a mark).

Power

Lights when the unit is turned on.

Bearer Channel 1 (B1)

When lit, indicates active data or voice connection on bearer channel 1.

Bearer Channel 2 (B2)

When lit, indicates active data or voice connection on bearer channel 2.

Terminal Ready

OH

128

Lights to indicate that the computer is communicating with the MTA128ST- USB, so the MTA128ST-USB can answer an incoming call.

Off Hook

Lights when analog equipment on AUX port is active or off-hook.

128 Kbps

Lights to indicate that the B channels have been multiplexed into a single 128 Kbps communications link.

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