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