Content for TS 44.006 Word version: 18.0.0
5 Frame structure for peer-to-peer communication
6 Elements of procedures and formats of fields for Data Link Layer peer-to-peer communication
7 Elements for layer-to-layer communication
5 Frame structure for peer-to-peer communication p. 10
5.1 General p. 10
5.2 Frame delimitation and fill bits p. 12
5.3 Address field p. 12
5.4 Control field p. 13
5.5 Length indicator field p. 13
5.5a Short L2 header type 1 p. 13
5.6 Information field p. 13
5.7 Transparency p. 13
5.8 Format convention p. 13
6 Elements of procedures and formats of fields for Data Link Layer peer-to-peer communication p. 14
6.1 General p. 14
6.2 Address field format p. 14
6.3 Address field variables p. 15
6.3.1 Address field extension bit (EA) p. 15
6.3.2 Command/response field bit (C/R) p. 15
6.3.3 Service access point identifier (SAPI) p. 15
6.4 Control field formats p. 15
6.4.1 Information transfer format - I p. 15
6.4.2 Supervisory format - S p. 16
6.4.3 Unnumbered format - U p. 16
6.4a Short L2 header type 1 p. 16
6.5 Control field parameters and associated state variables p. 16
6.5.1 Poll/Final bit p. 16
6.5.2 Multiple frame operation - variables and sequence numbers p. 17
6.5.2.1 Modulus p. 17
6.5.2.2 Send state variable V(S) p. 17
6.5.2.3 Acknowledge state variable V(A) p. 17
6.5.2.4 Send sequence number N(S) p. 17
6.5.2.5 Receive state variable V(R) p. 17
6.5.2.6 Receive sequence number N(R) p. 17
6.5.2.7 Other parameters and variables p. 18
6.5.3 Unacknowledged operation variables and parameters p. 18
6.6 Length indicator field format p. 18
6.7 Length indicator field variables p. 18
6.7.1 Length indicator field extension bit (EL) p. 18
6.7.2 More data bit (M) p. 18
6.7.3 Length indicator (L) p. 18
6.8 Commands and responses p. 19
6.8.1 Information (I) commands p. 19
6.8.2 Set asynchronous balanced mode (SABM) command p. 19
6.8.3 Disconnect (DISC) command p. 20
6.8.4 Unnumbered information (UI) command p. 20
6.8.5 Receive ready (RR) command/response p. 20
6.8.6 Reject (REJ) command/response p. 21
6.8.7 Receive not ready (RNR) command/response p. 21
6.8.8 Unnumbered acknowledgement (UA) response p. 21
6.8.9 Disconnected mode (DM) response p. 21
7 Elements for layer-to-layer communication p. 22
7.1 Definition of primitives and parameters p. 22
7.1.1 Generic names p. 22
7.1.1.1 DL ESTABLISH p. 22
7.1.1.2 DL RELEASE p. 22
7.1.1.3 DL DATA p. 22
7.1.1.4 DL UNIT DATA p. 22
7.1.1.5 DL SUSPEND p. 22
7.1.1.6 DL-RESUME p. 22
7.1.1.7 DL-RECONNECT p. 23
7.1.1.8 DL-RANDOM ACCESS p. 23
7.1.1.9 MDL-RELEASE p. 23
7.1.1.10 MDL ERROR p. 23
7.1.1.11 PH DATA p. 23
7.1.1.12 PH RANDOM ACCESS p. 23
7.1.1.13 PH CONNECT p. 23
7.1.1.14 PH READY TO SEND p. 23
7.1.1.15 PH EMPTY FRAME p. 23
7.1.2 Primitives types p. 23
7.1.3 Parameter definition p. 25
7.1.3.1 Message unit p. 25
7.1.3.2 Channel type p. 25
7.1.3.3 Service Access Point p. 25
7.1.3.4 Release mode p. 25
7.1.3.5 Error cause p. 25
7.1.3.6 Establish mode p. 26
7.1.3.7 L2 header type p. 26
7.1.3.8 Priority p. 26
7.2 Primitive procedures p. 29
