User Data
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... Data Option, Quality of
Service, TS-User data.
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T-CONNECT Response Responding Address ...
... Service, Expedited Data
Option, TS-User data.
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T-DATA Request TS ...
... ------------------------------------------------------------------------
T-DATA Request TS-User data.
Indication
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...
... ------------------------------------------------------------------------
T-EXPEDITED Request TS-User data.
DATA Indication
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...
... ------------------------------------------------------------------------
T-DISCONNECT Request TS-User data.
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T-DISCONNECT Indication Disconnect reason, TS ...
... ------------------------------------------------------------------------
T-DISCONNECT Indication Disconnect reason, TS-User
data.
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...
... ------------------------------------------------------------------------
N-DATA Request X NS-User data, X
Indication X Conf. Request Y
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...
... N-EXPEDITED Request Y
DATA Indication NS-User data Y
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N-RESET Request X
...
... ------------------------------------------------------------------------
N-DISCONNECT Request X NS-User data Z
Indication X
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...
... - if the TS-User requests either transmission of
user data during the connection phase, or use of
Expedited data transfer ...
... Purpose: To convey transport protocol data unit in user
data fields of network service primitives.
...
...
TPDUs are conveyed using the NS-User data parameters of the
Network Service primitives, primarily with the N-DATA, but also with
...
... - called transport address (optional)
- user data (optional)
- TPDU size (optional)
- sequence number ...
...
1. Set up the complete TPDU, including the header and
user data (if any). The header must include the checksum parameter in
...
... header,
variable part of the header and the user data, add the octet value to
C0, and then add the value of C0 to C1. Octets should be processed
...
... restrictions:
o No exchange of user data is allowed.
o Only TSAP-ID and TPDU size parameters are allowed.
...
... connection establishment function shall be used.
7.2.3.1.1 User Data in the Connection Phase
...
... data units outstanding at any
time is limited to one and the amount of TS-user data is limited (up
to 16 octets).
...
... value of 254 (11111110). The length indicated is the header length,
including parameters, but excluding the length indicator field and
user data, if any. The value 255 (11111111) is reserved for
possible extensions.
...
...
8.2.4 Data Field This field contains transparent user data.
Restrictions on its size are noted for each command.
...
... User Data (Octets p+1 to the end)
No user data are permitted in class 0, and are
optional in the other classes ...
... See Section 8.3.4
8.4.5 User Data (Octets p+1 to the end)
See Section 8.3.5
...
... This field may not exceed 64 octers and is used
to carry TS-User data. The successful transfer of this data is not
guaranteed.
...
... Checksum (See 8.2.3.1)
8.7.5 User Data Field
This field contains data of the TSDU being transmitted.
...
... header format) in the other classes. The
variable part, if presemt, amy further reduce the size of the user
data field.
...
... Checksum (See 8.2.3.1)
8.8.5 User Data Field
This field contains an expedited TSDU. Up to 16 octets ...