Specifications

195
Troubleshooting
Software
•MS-DOS
ZlinkW is intended to run under MS-DOS or PC-DOS, version 2.x or 3.x. ZlinkW
may not work under multi-tasking environments, or on network systems, or on
operating system work-a-likes.
• TSRs
TSR (memory-resident or background) utility programs may cause a problem in
some cases. A TSR that tried to use the same COM port as ZlinkW while linked up
to the terminal would definitely cause a problem. Conflicts might arise if TSRs use
too much memory for ZbaseW to run. A TSR may steal too much time during
interrupt handling, causing ZlinkW to fail or be unreliable. In one case, a resident
terminal communications program was causing the problem by taking over the
COM port.
For testing purposes, remove all TSR programs.
• ZETRON VERSIONS
The ZlinkW version must correspond to the ZbaseW and ZPAGE version.
Incompatibilities might cause wrong Local Connect baud rate (4800 vs. 1200),
incorrect password system handling (version 300 vs. earlier versions), etc. When
calling, tell Zetron what version of ZlinkW you have. Just type:
ZlinkW
at the DOS prompt in your Zetron directory to find out what version it is. Your
ZbaseW version is listed at the top of the screen in the Main Menu.
• ANSI.SYS
If the computer locks up or goes crazy when you try to run ZlinkW, try using a
different ansi.sys file.
Try A Different Machine
As you can see in the above section, there are many possible ways for failures to occur due
to the hardware/software. If you have another computer system (and/or modem & cables)
available, try it.
Specific Problems
Connects, then drops Link Connection
If you are using an external modem, its switches are OK, and it even works with other
software - probably the cable is not passing all the pins through, especially pins 8 & 20.
Another possibility is other modem devices on the same telephone line. A FAX, or a
modem in a PC, will usually answer before the modem in the paging terminal, and will
sound the same or similar, so make sure no such devices are on the same telephone line.