Toshiba CTX28 Manual Do Utilizador
T1
T1
RDTU1 & 2 - T1 Interface Unit
Strata CTX I&M 06/04
8-15
RDTU1 & 2 - 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
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.
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
and described in
The RDTU requires installation of a customer-provided Channel Service Unit (CSU). Refer to
Testing procedures (local loop back and remote loop back) are in
.
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.
determines the setting of the SW1 Equalizer Switch. The SW1 switch consists of a bank of smaller
switches, S1~S7.
³
Set the SW1 switch per
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
more than 655 feet (see “RDTU to PBX T1 (Separated More Than 655 ft.)” on
).
RDTU1 & 2 Installation
for loop back testing procedures.
See
for the
appropriate SW1 equalizer switch setting.
2. Insert the RDTU (component side facing right) into the appropriate slot and apply firm, even
pressure to ensure proper mating of connectors. (See
.)
Table 8-11
RDTU1 & 2 Equalizer Switch and Loop Back Jumpers
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