ACC X.25 Protocol User's Guide

Appendix A 141
X.25 Status and Completion Messages
Unsolicited Status Messages
seconds by calling zx25reset_conf().IftheRSET bit is
set to 0, then the ACC X.25 subsystem will
automatically issue a Reset Confirmation packet on the
VC.Thisstatusisalsoaccompaniedbydatastructure
containing the reset cause and diagnostic codes.
** ST26LCCLR (122) Clear Request packet received on VC. This
indicates that the Call Clear processing has begun. The
application will receive a VC DOWN (115) status
message when the clear processing is complete. This
status message also has an associated data buffer
containing the Clear packet data.
** ST26LCCLC (123) Call Accepted packet received on VC. T his
indicates that an outbound call has been accepted by
the destination. This status does not indicate the call
is now established. The application should wait for the
VC UP status message. Status 123 also has an
associated data buffer which contains the Call Accept
packet information.
** ST26LCRSS ( 124) Local VC Reset initiated due to protocol
exception condition. This indicates that the ACC X.25
subsystem has sent a Reset Request as the result of an
exception condition. For example, if an Interrupt
packet that was sent is not confirmed within T26
seconds.
ZxRESET_TO(125) VC Re set Request has timed out. T hat i s, t he
remote end of the link has not replied with a Reset
Confirmation packet within the allowed amount of
time (T22 timer).
**ZxCLR_CONF(126) Clear Confirmation packet received on VC. The
status message data buffer contains the clear
confirmation packet data.