Specifications

Section 360-381-202
5
face to a powered line that uses line-powered repeaters. See Figure 2 and Figure 3 for typical applications. Other
applications use a second T1 interface unit (model number 3608-80) with drop-and-reinsert capability for use in a
fractional T1 span line. For more information on the secondary T1 unit, reference the product documentation.
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18
448 Kb
14
384 Kb
15
56 Kb
123456789
13
384 Kb
3
64 Kb ea.
T1/DS1
1.544 MB/s
Facility
time-slot
physical
channel
rate
12
7
360−80 360−80
T1−S
CH 7
384 KB
56 KB
voice
448 KB
voice
voice
CH 18
CH 15
CH 14
CH 13
CH 1
CH 2
CH 3
.
.
.
.
.
.
.
.
.
voice
384 KB
T1−S
CH 7
CH 18
CH 15
CH 14
CH 13
CH 1
CH 2
CH 3
.
.
.
.
.
.
.
.
.
384 KB
56 KB
voice
448 KB
voice
voice
voice
384 KB
64 Kb
Figure 2. Application #1, Point-Point Full DS1/T1
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1513
12 3456789
143
64
time-slot
physical
channel
rate
45 16
9.6
Kb
19.2
Kb
56
Kb
Kb ea.
no traffic data
Fractional
T1/DS1
Facility
512 KB/s
T1−S
360−80 360−80
T1−S
CH 3
CH 4
CH 5
.
.
.
CH 13
CH 14
CH 15
CH 16
64 KB
19.2 KB
voice
voice
voice
9.6 KB
56 KB
CH 3
CH 4
CH 5
.
.
.
CH 13
CH 14
CH 15
CH 16
64 KB
19.2 KB
voice
voice
voice
9.6 KB
56 KB
Figure 3. Application #2, Point-Point Fractional T1/DS1
3.1 Point-to-Point Applications
The 360-80 ICB can be used in point-to-point applications, as shown in Figure 2, and can transport a mix of voice
and data traffic. In these applications, the 360-80 ICB multiplexers are interconnected via a 1.544 MB/s DS1/T1
facility. This facility can be a leased public network channel or a private, dedicated facility.
Figure 2 shows how the 360-80 ICB maps the physical channel unit positions into DS1 facility timeslots. The par-
ticular mapping shown is for example only; any physical slot can be mapped into any time-slot. The only restric-
tion to the mapping is that channel units whose bandwidth occupies more than one 64KB time-slot must map their
bandwidth into adjacent timeslots.