ACC X.25 Protocol User's Guide

X.25 Status and Completion Messages
Unsolicited Status Messages
Appendix A 141
** ST26LCRSR (121) Reset Indication received on VC. If the RSET bit
is set to 1 in the VC ZLU’s option word, then the
application is required to confirm the reset within 60
seconds by calling zx25reset_conf(). If the RSET bit is
set to 0, then the ACC X.25 subsystem will
automatically issue a Reset Confirmation packet on the
VC. This status is also accompanied by data structure
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. This
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 Reset Request has timed out. That is, the
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.