User's Manual

Chapter 3 35
Using HDLC/LAP-D Protocol
Status and Error Messages
The following status messages are used by the protocol to return data in
response to a control write
:
69 ST25TXFR† Reset/Disc. due to transmitted FRMR
An unrecognized frame was received by the protocol; this
causes LAP-D to reset the link by sending a SABME. For
consistent error handling between LAP-D and LAP-B
(which sends a FRMR instead of a SABME), the protocol
sends this status message. The data buffer contains the
information field of the FRMR that LAP-B would send.
70 ST25RXFR† Reset/Disc. due to received FRMR
A frame reject response was received. A copy of the
received FRMR’s information field is in the data buffer of
the unsolicited status message.
71 ST25RXDM† Reset/Disc. due to received DM
The protocol received a Disconnected Mode response.
72 ST25RXSA† Reset/Disc. due to recvd SABM/SABME
A Set Asynchronous Balanced Mode Extended command
was received by the protocol.
73 ST25RXDI† Reset/Disc. due to received DISC
The protocol received a DISConnect command.
74 ST25RXUA† Reset/Disc. due to received UA
An Unnumbered Acknowledgment response was
received by the protocol when the protocol had not
solicited a UA.
75 ST25RUFR† Reset/Disc. due to unsol final resp
The protocol received a response that had the Final bit set
even though the last command sent by the protocol did
not have the Poll bit set.
88 ST25L2STAT Statistics upload
This message is sent in response to a CW_STATS control
write. The data buffer contains a x25l2stat_type
structure (defined in
zcomx25.h).