Multi Tech Equipment MT5656ZDX Benutzerhandbuch

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Chapter 3 – Operation 
Multi-Tech Systems, Inc. MT5656ZDX User Guide 
13 
 
 
Chapter 3 - Operation 
Like any modem, your Multi-Tech modem operates only under the control of a communications program, such 
as the communications program included with your modem. It also operates under other general-purpose data 
communication programs, such as Windows Terminal and HyperTerminal. For information on how to use the 
modem with the communications program of your choice, please refer to the documentation provided with the 
data communications program. 
An experienced modem user can configure the program’s software to change the way the software interacts with 
a modem and configure the modem to change the way it operates. 
 
 
Front Panel 
 
About the LED Indicators 
 
The modem has ten LED indicators on the front panel that indicate status and activity: 
 
TD Transmit 
Data 
 
 
Flashes when the modem is transmitting data to another modem. 
 
RD Receive 
Data 
 
 
Flashes when the modem is receiving data from another modem. 
 
CD Carrier 
Detect 
 
 
Lights when the modem detects a valid carrier signal from another modem. It is on when the 
modem is communicating with the other modem, and off when the link is broken. 
 OH 
Off-Hook 
 
 
Lights when the modem is off-hook, which occurs when the modem is dialing, online, or 
answering a call. The LED flashes when the modem pulse-dials. 
 TR 
Terminal 
Ready 
 
 
Lights when a communication program is using the modem. It means the modem is ready for 
an outgoing or incoming call. It goes off when the communication program disconnects the 
serial port. When it goes off, a connected modem will disconnect. 
 
Note: When you turn on the modem, the PWR indicator lights; and if a terminal program is running, 
the TR indicator also lights.