User Manual

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6 Frame Relay
6.1.2 DLCI-areas when the 2-Byte-Address array is used
(ITU Q.922)
Table 5 lists the allocation of the DLCI numbers on use of the 2-
Byte-address array.
DLCI-area Meaning
0 Signalizing in the transmission channel, if necessary
1 – 15 Reserved
16 – 511 Network option: on not-D channels, usable for the support of user
information
512 - 991 logical connecting identifier for the support of user information (the
use of semi permanent connections can reduce the DLCI numbers
available within this area)
992 - 1007 Layer 2-Management of Frame-transport services
1008 reserved
1023 Layer 2-Management in the transmission channel if necessary (only
usable without d-channel)
Table 5
DLCI allocation in connection with 2-Byte-
address array
DLCI Range10987654321
0 0000000000
1 - 0000000001
15 0000001111
16 - 0000100000
511 0111111111
512 - 1 0 0 0 0 0 0 0 0 0
911 1111011111
992 - 1 1 1 1 1 0 0 0 0 0
1007 1 1 1 1 1 0 1 1 1 1
1008 - 1 1 1 1 1 1 0 0 0 0
1022 1 1 1 1 1 1 1 1 1 0
1023 1 1 1 1 1 1 1 1 1 1
Table 6
bit sequence for different DLCI identifiers