MX-2100/2104
Installation and Operation Manual
Chapter 1 General Information
Application Considerations
1-19
Table 1-2. Bandwidth Allocations
Use
Allocation Units
Allocation Rule
Frame
Synchronization
1 Mandatory
Management
Channel
Depends on Main Link Rate
Optional
(at least 9.6 kbps
recommended)
Channel Data
Channel
Main Link Rate in kbps
(used Bandwidth Allocation Unit kbps rate in parenthesis)
9.6 to 32
(0.4)
48 to 192
(0.8)
256, 384
(1.6)
512, 768
(3.2)
1024, 1536
(6.4)
All Modules
300 bps
600 bps
1.2 kbps
2.4 kbps
4.8 kbps
6.4 kbps
7.2 kbps
8 kbps
9.6 kbps
14.4 kbps
16 kbps
19.2 kbps
24 kbps
28.8 kbps
32 kbps
38.4 kbps
48 kbps
56 kbps
57.6 kbps
64 kbps
67.2 kbps
76.8 kbps
86.4 kbps
96.0 kbps
105.6 kbps
115.2 kbps
124.8 kbps
128 kbps
160 kbps
192 kbps
224 kbps
240 kbps
272 kbps
304 kbps
336 kbps
368 kbps
3
3
3
6
12
16
18
20
24
36
40
48
60
72
80
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
3
3
3
3
6
8
9
10
12
18
20
24
30
36
40
48
60
70
72
80
84
96
108
120
132
144
156
–
–
–
–
–
–
–
–
–
3
3
3
3
3
4
–
5
6
9
10
12
15
18
20
24
30
35
36
40
42
48
54
60
66
72
78
80
100
120
140
150
170
190
210
230
3
3
3
3
3
2
–
–
3
–
5
6
–
9
10
12
15
N/A
18
20
21
24
27
30
33
36
39
40
50
60
70
75
85
95
105
115
–
–
–
–
–
–
–
–
–
–
–
3
–
–
5
6
–
–
9
10
–
12
–
15
–
18
–
20
25
30
35
–
–
–
–
–
In accordance with
channel data rate.
Theoretical
minimum is 1
allocation unit per
active channel. For
low rate data (i.e.,
for data rates lower
than the bandwidth
allocation unit),
oversampling is used
to achieve an integer
number of bit
samples, e.g., when
the bandwidth
allocation unit is
0.8 kbps and the
channel data rate is
300 bps, the
effective bandwidth
used is 8 times
higher, 2.4 kbps.
2.4 kbps translate to
3 allocation units.
Therefore, the effect
of oversampling is to
increase the
bandwidth used to
transfer low-rate
channels.
64 kbps rate
available only for
main link rates of
128 kbps and higher
KHS.2 Only
N
×
2.4
N
×
4.8
N
×
9.6
N
×
6
–
–
N
×
3
–
–
–
N
×
3
–
–
–
N
×
3
Channel
End-to-End
Control Signals
1 allocation unit per module or for each two channels of the
same module, when applicable (1 allocation unit can carry
up to four control signals, e.g., two signals for two channels)
For each channel that requires
end-to-end signaling, including
voice channels
