Nortel Networks Video Gaming Accessories 553-3001-211 Manual De Usuario
Appendix A: LAPB Data Link Control protocol
Page 893 of 894
Description of procedure
The basic LAPB procedures must be implemented to satisfy the following:
•
standard use of the poll/final bit (for more information, see
ISO-4375-1979-[E])
ISO-4375-1979-[E])
•
exception condition reporting and recovery implemented in accordance
with BX.25 and ADCCP specifications
with BX.25 and ADCCP specifications
•
link set-up and disconnect implemented according to BX.25
specifications
specifications
Table 276
Commands and responses
Commands and responses
Command
Response
Option
I
8
RR
RR
RNR
RNR
REJ
REJ or FRMR
2
SABM
UA
DISC
DM
Legend:
I: Information
RR: Receive ready
RNR: Receive not ready
REJ: Reject
SABM: Set asynchronous balanced mode
DISC: Disconnect
RSET: Reset
FRMR: Frame reject
UA: Unnumbered acknowledge
DM: Disconnect mode
Option 2: Provides ability for more timely reporting of I frame sequence errors
Option 8: Limits the procedure to allow I frames to be commands only
I: Information
RR: Receive ready
RNR: Receive not ready
REJ: Reject
SABM: Set asynchronous balanced mode
DISC: Disconnect
RSET: Reset
FRMR: Frame reject
UA: Unnumbered acknowledge
DM: Disconnect mode
Option 2: Provides ability for more timely reporting of I frame sequence errors
Option 8: Limits the procedure to allow I frames to be commands only