User Manual

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6 Frame Relay
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LMI (Local Management Interface of ITU-T Q.933 or
ANSI T1.617), since this procedure uses DLCI 1023 or
DLCI 0,
-
Establishing of connections for SVCs (uses DLCI 0),
-
Multiple transmissions (uses DLCI 1019 ... 1022).
6.1.1 Frame Relay-Address array
Table 3 shows the structure of the 2 Byte long Address array:
87654321
DLCI 10 DLCI 9 DLC I 8 DLCI 7 DLCI 6 DLCI 5 C/R EA
DLCI 4 DLCI 3 DLCI 2 DLCI 1 FECN BECN DE EA
Table 3
Structure of the 2 Byte long address array
Explanation:
•
DLCI
Data Link Connection Identifier
•
C/R
Command Response Bit
•
EA
Address Array Extension Bit
•
FECN
Forward Explicit Congestion Notification
•
BECN
Backward Explicit Congestion Notification
•
DE
Discard Eligibility Indicator
The node address of the WIMAN is determined by the high or-
der-bits (DLCI 03...DLCI 10) of the DLCI number. The low or-
der bits (DLCI 1...DLCI 2) are used for virtual connections.
2-Byte-Adress
array