ZETRON 640 DAPT XTRA, Руководство по установке и ремонту

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Communications Setup
36 025-9416
IBM-Compatible
Office Computer
RS-232
COM port
Model 640
Zetron
ZLINK
Cable
Part No.
709-7211
Local RS-232
“COM PORT”
Figure 12. Local Serial Connection to Model 640
Remote Modem Connection
Note: Zetron recommends that a temporary local connection (usually with a laptop PC) be
made for installation diagnostics. Refer to “Local Serial Connection” on page 34 for
details. Once you have completed all the installation procedures described in Section
5, return to this subsection and modify the communications link accordingly.
If a temporary local connection cannot be made for installation purposes, skip to
Section 5 and complete the “Telco Connections” procedure before trying to make a
remote modem connection.
Use a modem connection if the office computer cannot be located at the Model 640 site. A PC
modem and two separate phone lines are required for this type of communication. One phone
line interfaces to the computer’s modem, and the other interfaces to any trunk of the Model 640
(with internal modem).
A dedicated phone line is not required for the computer’s modem. However, a separate line is
more efficient for data transfer and system monitoring, since customer traffic is not impeded.
Zetron recommends that the modem phone line:
•
is separate from any of the lines into the paging terminal trunk cards
•
is a standard end-to-end, loop start line
•
does not have a Call Waiting feature
•
is dedicated to ZLINK maintenance use
Installation Procedure
Figure 13 illustrates the hardware connections between the office computer and a remotely
located Model 640.