T1
Slot Assignments
6-2
Strata CTX I&M 10/02
RDTU - T1 Interface Unit
Circuits per PCB:
8, 16, or 24 channels
Interfaces with:
ground start CO lines
loop start CO lines
DID or Tie lines
Older Version(s):
none
RDTU is configured for Tie or DID lines and an RRCS must be installed for DTMF operation.
LEDs on the RDTU show a continuous status of RDTU operation. The Strata CTX can support up
to eight RDTU2 or RPTU2 PCBs total.
RDTU controls and interface connectors are shown in
Figure 6-2
and described in
Table 6-1
.
The RDTU requires installation of a customer-provided Channel Service Unit (CSU). Refer to
“Installation Guidelines” on page 6-4
for CSU installation.
Testing procedures (local loop back and remote loop back) are in
“Loop Back Testing” on page
6-10
.
SW1 Equalizer Switch and Loop Back Jumpers (Internal
Option)
The distance between the Strata CTX cabinets and the CSU (or other customer premise T1 circuit)
determines the setting of the SW1 Equalizer Switch. The SW1 switch consists of a bank of smaller
switches, S1~S7.
➤
Set the SW1 switch as follows:
Note
The maximum distance between the RDTU and the CSU or other T1 circuits can not be
more than 655 feet (see “RDTU to PBX T1 (Separated More Than 655 ft.)” on
page 6-5
).
Mode
Feet from Strata
CTX
S1
S2
S3
S4
S5
S6
S7
S8
Short
0~150
On
Off
Off
Off
Off
Off
Off
N/A
Medium
151~450
Off
On
Off
On
Off
On
Off
N/A
Long
450~655
Off
Off
On
Off
On
Off
On
N/A
Содержание Strata CTX100
Страница 16: ...Introduction Related Documents Media xii Strata CTX I M 10 02 ...
Страница 94: ...Strata CTX100 Installation Installing the CTX100 Cabinet 2 24 Strata CTX I M 10 02 ...
Страница 150: ...Strata CTX670 Installation Remote Expansion Cabinet Unit 3 56 Strata CTX I M 10 02 ...
Страница 188: ...PCB Installation Network Requirements 4 38 Strata CTX I M 10 02 ...
Страница 238: ...T1 Loop Back Testing 6 12 Strata CTX I M 10 02 ...
Страница 310: ...Station Apparatus 2000 series Telephones 8 48 Strata CTX I M 10 02 ...
Страница 342: ...Peripheral Installation Station Message Detail Recording SMDR 9 32 Strata CTX I M 10 02 ...