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Control Field; Table 5: Coding Of The Control Field - Siemens Mux_guide_v06 User Manual

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Multiplexer User's Guide
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4.2.3 Control field

The control field contains control information to define the frame.

Table 5: Coding of the control field

Frame Type
SABM
(set asynchronous
balanced mode)
UA
(unnumbered
acknowledgement)
DM
(disconnected mode)
DISC
(disconnect)
UIH
(unnumbered information
with header check)
P/F: Poll/Final bit
Commands: P = 1, Responses: F = 1
For each DLCI, only one frame with P = 1 may ever be expected.
Mux_guide_v06
1
2
3
1
1
1
1
1
0
1
1
1
1
1
0
1
1
1
Page 19 of 36
s
4
5
6
1
P/F
1
0
P/F
1
1
P/F
0
0
P/F
0
1
P/F
1
m
o b i l e
7
8
0
0
1
0
0
0
1
0
1
1
30.06.2004

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