2.2.1.15.1 Control PDU Data (TS_CONTROL_PDU)
The TS_CONTROL_PDU structure is a standard T.128 Synchronize PDU ([T128] section 8.12).
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shareDataHeader (18 bytes) |
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action |
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grantId |
controlId |
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shareDataHeader (18 bytes): Share Data Header (section 2.2.8.1.1.1.2) containing information about the packet. The type subfield of the pduType field of the Share Control Header (section 2.2.8.1.1.1.1) MUST be set to PDUTYPE_DATAPDU (7). The pduType2 field of the Share Data Header MUST be set to PDUTYPE2_CONTROL (20).
action (2 bytes): A 16-bit, unsigned integer. The action code.
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Value
Meaning
CTRLACTION_REQUEST_CONTROL
0x0001
Request control
CTRLACTION_GRANTED_CONTROL
0x0002
Granted control
CTRLACTION_DETACH
0x0003
Detach
CTRLACTION_COOPERATE
0x0004
Cooperate
grantId (2 bytes): A 16-bit, unsigned integer. The grant identifier.
controlId (4 bytes): A 32-bit, unsigned integer. The control identifier.