ACC X.25 Protocol User's Guide

ZX25D X.25 Protocol Driver
Configuration
Chapter 3 33
SVCs on this link have the inbound and outbound packet size set to 7
(128 bytes) and the inbound and outbound window size set to 2. These
are the default parameters for the SVCs on this link, and they can be
altered for an individual SVC at call setup through facilities negotiation.
The equivalent parameters for PVCs are individually specified in the
PVC’s poll/select configuration bytes.
The T1, T2 and T4 timers have all been preconfigured for this link. They
have been set to:
T1 - 400 milliseconds
T2 - 200 milliseconds
T4 - 40 seconds
NOTE In this case the “T3_T4_time” parameter sets the T4 timer because this
link is a DTE.
The Terminal-Definition takes the following general format:
Term zlu mux:port:subc device poll select
appl_no inst_no brch_no wkst_no hunt_no name <option>
<Link keyword> <value>
More specific information on the parameters in the link terminal
definition follows.
zlu This number (100 in the example) assigns a unique
reference number for this X.25 link, which is used by
the ZCOM X.25 software to relate errors displayed to a
specific X.25 link. The ZLU number is also used in the
ZCOM X.25 API calls to control and configure a specific
X.25 link.
mux:port:subc The Mux must have been defined in a Mux Definition
statement. The port must have been defined in a Port
Definition statement. The “:subc” information must be
supplied for a 4-port E1/T1 card and should be omitted
for all other card types. The subc must have been
defined in a Subch Definition statement.
device The device type of the X.25 link terminal must be
X25.LAPB.