ACC X.25 Protocol User's Guide

X.25 Application Programming
ZX25CALLOUT (3X) — ACC X.25
Chapter 494
ZxeX25_NOT_INITIALIZED (98) The ACC X.25 subsystem has not
been initialized. You must run
zx25d_init before issuing any zx25...()
calls.
ZxeX25_TBL_FULL (99) The X.25 routines maintain an
internal table for accessing remote
ZCOM nodes. This table has room to
access up to 20 different ZCOM nodes
(including the local node). This
request attempted to access the 21st
ZCOM remote node and the internal
table used had insufficient space to
save the routing data.
NOTES 1. The X.121 call address consists of 8 bytes, and it is used a a 15-digit
BCD number plus a length digit in the last position. For example, in
hex:
DD DD DD DD DD DD DD DL
where D is a 4-bit BCD digit, whose range is from 0 to 9
L is a 4-bit length digit, whose range is from 1 to 15
The 15 address digits should be left-justified and without leading
zero. The length digit indicates the number of address digits. For
example, to specify addresses “1773648” and “123456789012”, the
hex values of the address buffer should be:
17 73 64 8X XX XX XX X7 for 1773648
12 34 56 78 90 12 XX XC for 123456789012
where X is unused digit (normally should be set to zero).
2. The calling program (or thread) must call zx25info before calling this
routine. In a multi-threaded application, each thread must make a
separate call to zx25info using a per-thread ZCOM X.25 access data
buffer zxip. The per-thread data buffer can then be used to call this
routine.