0x01

Send ACM

0x02

Send CPG

0x03

Send ANM

0x04

Request local maintenance blocking (sends BLO)

0x05

Request local maintenance group blocking (sends CGB)

0x06

Request local maintenance unblocking (sends UBL)

0x07

Request local maintenance group unblocking (sends CGU)

0x08

Send GRS

0x09

Send RSC

0x0A

Send HW block

0x0B

Send HW unblock

0x0C

Indicate CPC to wait for incoming COT report when the continuity check is being performed on the previous circuit

0x0D

Send incoming continuity check report when the continuity check was performed on the previous circuit.

0x0E

Send unrecognized message to the network. It is used for message pass on during MCP handling. NOTE: ICB subtype 0x1F should be used for sending the unrecognized message. DPC/CIC in the ICB should be sent as "00".

0x1E

Send CON

0x1F

Send CQM

0x20

Send FAR

0x21

Send FAA

0x22

Send FRJ

0x23

Send USR

0x24

Send FAC

0x25

Send PAM

0x26

Send NRM

0x27

Send CRG

0x28

Send IDR

0x29

Send IRS

0x2A

Send INR

0x2B

Send INF

0x2D

Send SUS

0x2E

Send RES

0x32

Send SAM

0x33

Reset timer T35 (for inbound SAM)

0x40

Manual Stop (for Continuity re-checking)

0x41

Send Continuity Check Request Message (CCR)

0x42

Send UPT

0x43

Send CCL

0x44

Send OPR

0x46

Send FOT

0x47

Send DRS

0x49

CMC Request with/without Parameters

0x4A

CMRJ request with/without Parameters.

0x4B

CMR Request with/without Parameters

0x4C

Request for COT

0x4D

Request for CCR

0x4E

Request for LPA

0x55

Loop Prevention

0x60

Send SGM