Toshiba Strata AirLink DK40i, Руководство по установке и обслуживанию

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ISDN Interfaces
RPTU Interface Unit
16-6
Strata DK I&M 6/00
The CSU is transparent to data, clock, and framing. It acts as a repeater, not a controller, for
timing. The CSU also acts as a signal regenerator and must be able to perform loop-back tests and
maintenance to both the network and DK RPTU. The CSU is the same type as used for T1 circuits
although it performs the function as NT1 for PRI ISDN in the ISDN reference model as shown in
Figure 16-1 .
DK40i Slot Assignments
The RPTU is allowed in the slots shown in Table 16-3 .
Table 16-3 DK40i Slot Assignments
Note
Slots 16, 17, and 18 can be used for other PCBs.
DK424 Slot Assignments
Up to eight RPTU PCBs can be installed in a DK424 or DK424i system providing up to 188 PRI
lines (B-channels). If RPTU (PRI) and RDTU (T1) PCBs are installed in the same DK424 or
DK424i, the maximum combined PCBs cannot exceed the numbers provided in
Table 16-1 . The
PCBs must be placed in designated slots in each of the DK424 or DK424i cabinets per Tables
16-3 ~ 16-5 . The next highest slot adjacent to the RPTU slot must be vacant.
Program 03 defines which cabinet slots contain RPTU PCBs. The maximum number of cards and
lines is listed in
Table 16-4 .
Table 16-4 DK280 or DK424 Base Cabinet with BA3/BB4, C3/D4 with MBJU or DK280 Base with RCTUE3/F4
RPTU Allowed in
Slot
Leave Slot
Vacant
15 (see Note)
17 18
Cabinet
RPTU
1
/Vacant Slots
2
No. Type
1
DK280 or DK424
(base)
13
1
/14
2
15
1
/16
2
2
DK280 21
1
/22
2
23
1
/24
2
25
1
/26
2
DK424 21
1
/22
2
23
1
/24
2
25
1
/26
2
3
DK280 31
1
/32
2
DK424 31
1
/32
2
4
DK280 41
1
/42
2
DK424 41
1
/42
2
5
DK280 51
1
/52
2
DK424 51
1
/52
2
6
DK280 61
1
/62
2
DK424 61
1
/62
2
1. Allowed RPTU slots.
2. Slots must be vacant if using more than 16 channels.