ACC HDLC-NRM (SDLC) User's Guide

Protocol Specific Configuration
Interface-Definition
Chapter 4 45
Interface-Definition
An Interface-Definition line appears in the sample configuration file for
each Multiplexer that will have HDLC-NRM (SDLC) connections
configured.
The firmware file that is used for products using HDLC-NRM (SDLC) is
different from the firmware files that are used for other protocols. It is
possible, however, to use other protocols with HDLC-NRM (SDLC) on a
single card, provided the firmware file has been customized to include
those other protocols. (Refer to the ACC Installation and Configuration
Guide and the ACC Utilities Reference Guide Sections on zlink for more
information on creating firmware files for multiple protocols.)
A sample Interface-Definition is as follows:
z7340a 00 1:2:0 /opt/acc/z7340a/hdlcnrm.zabs
Port-Definition
The ports used must be defined as operating in SDLC mode. They may be
defined with either an external (modem supplied) clock, or an internal
(supplied by the ACC card) clock. With an external clock, the speed is for
documentation purposes only, and will not be used by the ZCOM system.
The clock multiplier should be x1, and the encoding mode will normally
be NRZ.
A sample Port-Definition is as follows:
Port 01:04 RS232 9600 Ext SDLC x1 NRZ
Refer to the ACC Utilities Reference Guide Section on ttgen for details.