MTP 3 User Adaptation Layer

Version:

Release 1

0x01

Reserved:

0x00

Message class:

Management messages (0)

0x00

m3ua.message_class == 0

Message type:

Error (ERR) (0)

m3ua.message_type == 0

Notify (NTFY) (1)

m3ua.message_type == 1

Transfer messages (1)

0x01

m3ua.message_class == 1

Message type:

reserved(0)

m3ua.message_type == 0

Payload data (DATA) (1)

m3ua.message_type == 1

SS7 signalling network management messages(2)

0x02

m3ua.message_class == 2

Message type:

reserved(0)

m3ua.message_type == 0

目的地不可用(DUNA)

m3ua.message_type == 1

目的地可用(DAVA)

m3ua.message_type == 2

目的状态查询(DAUD)

m3ua.message_type == 3

7号信令网拥塞状态(SCON)

m3ua.message_type == 4

目的地用户部分不可用(DUPU)

m3ua.message_type == 5

目的地受限(DRST)(暂不使用)

m3ua.message_type == 6

ASP state maintenance messages (3)

0x03

m3ua.message_class == 3

Message type:

reserved(0)

m3ua.message_type == 0

ASP Up(ASPUP)

m3ua.message_type == 1

ASP Down(ASPDN)

m3ua.message_type == 2

Heartbeat(BEAT)

m3ua.message_type == 3

ASP UP Ack(ASPUP ACK)

m3ua.message_type == 4

ASP Down Ack(ASPDN ACK)

m3ua.message_type == 5

Heartbeat Ack(BEAT ACK)

m3ua.message_type == 6

ASP traffic maintenance messages (4)

0x04

m3ua.message_class == 4

Message type:

reserved(0)

m3ua.message_type == 0

ASP激活(ASPAC)

m3ua.message_type == 1

ASP去活(ASPIA)

m3ua.message_type == 2

ASP激活 Ack(ASPAC ACK)

m3ua.message_type == 3

ASP去活 Ack(ASPIA ACK)

m3ua.message_type == 4

Routing key management messages (9)

0x09

m3ua.message_class == 9

Message type:

reserved(0)

m3ua.message_type == 0

注册请求(REG REQ)

m3ua.message_type == 1

注册响应(REG RSP)

m3ua.message_type == 2

注销请求(DEREG REQ)

m3ua.message_type == 3

注销响应(DEREG RSP)

m3ua.message_type == 4