Instruction manual

Communications Setup

025-9416 41

Note: The initialization string for other modem brands may vary. Always consult the

documentation for your modem to confirm the correct commands.

The following steps will allow you to change the modem initialization string:

1. Exit MCU to DOS. (Hit <Esc> repeatedly or select Other, Exit.)

2. Change to the \MCU directory (if not already there), by typing at the DOS prompt:

CD C:\MCU\<my site name>

3. At the DOS prompt type “EDIT modem.ini”.

4. Enter the new initialization string to disable the features previously mentioned. Do

not insert spaces between commands; the string should be continuou.

5. Save the file and then exit to DOS.

The next time the location is ZLINKed, the computer will look at the “modem.ini” file for the

appropriate modem commands.

Note: If you are unsure about modem initialization commands, contact Zetron Mobile and

Paging Systems technical support for assistance. Be sure to have your modem manual

handy for easy reference before calling.

Troubleshooting the MCU Interface

If the ZLINK interface is not successfully established with the paging terminal, recheck each of

the following:

þ all communication parameters defined in MCU, especially the Password and Phone

Number fields

þ all hardware connections between the office computer and the paging terminal

þ all telco connections to the ZLINK trunk (if using a modem interface)

ZLINK Connection Through Another Terminal Emulator

This procedure describes how to establish communication with the Model 640 using an alternate

terminal emulator program. (In the examples below, ProComm® is used.)

Note: Zetron recommends the use of MCU for communication between the office computer

and the Model 640. This procedure is included for completeness, but is not the best

means of linking to the paging terminal.

Use the following steps to configure the communications software for ZLINK interface:

1. Boot up the office computer.

2. Power up the Model 640 and let it complete its boot sequence (all lights have

extinguished except the READY light is on solid).