Circuit assignment map
8 7 6 5 4 3 2 1
1 H G F E D C B A
2 8 7 6 5 4 3 2 1
3 16 15 14 13 12 11 10 9
4 24 23 22 21 20 19 18 17
5 sp 31 30 29 28 27 26 25
The following codes are used in the circuit assignment map parameter field:
a-1) Map type:
F E D C B A
0 0 0 0 0 0 Spare
0 0 0 0 0 1 1544 kbit/s digital path map format (64 kbit/s base rate)
0 0 0 0 1 0 2048 kbit/s digital path map format (64 kbit/s base rate)
0 0 0 0 1 1
to
1 1 1 1 1 1 spare
a-2) bits H,G, octet 1: Spare
b-1) Map format (octets 2 to 5):
Each bit position on the map (octets 2 to 5) indicates whether the
corresponding 64 kbit/s circuit is used in the N X 64 connection.
The bits are coded as follows:
0 - 64 kbit/s circuit is not used
1 - 64 kbit/s circuit is used
Octet 5 is not used for 1544 kbit/s digital path map.
b-2) bit 8, octet 5: Spare