Specifications

Overview
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Multiport Serial TAP Input
Overview
The Multiport Serial Card allows serial communications with a 2000 Series paging
terminal. There are two basic uses for this card.
The first use is alphanumeric page entry from up to eight separate serial inputs. The card is
hooked up to alpha entry devices with a serial port, using either our dumb-terminal mode
or iXO (TAP) paging protocol.
The other use is as a TNPP interface. Refer to Multiport for TNPP and TAP Outdial on
page 133, for more information.
Paging Terminal Requirements for the Multiport Card
You must be using Version 300 or later software. Therefore, you must have a CPU in the
terminal with at least 512K of memory. The version of the ZPAGE program running the
terminal must be 300d0 or later.
If you have a Model 2200, it must have Revision B or later lower backplane (ZBUS, 702-
9071). A Revision A backplane will not work due to different analog grounds. (This can
be worked around by cutting a trace on the Multiport card.)
General Information
You can purchase the Multiport card in a 2-, 4-, 6-, or 8-port configuration.
Each serial port is independent of the others, just as each half of a Dual Trunk card is
independent.
For more information on alphanumeric messaging, refer to the Alphanumeric Messaging
section of the 2000 Series Operating and Programming Manual (025-9034-001).
For detailed information on the iXO/TAP protocol, refer to Appendix A: TAP Protocol
Summary on page 361.