Rdtu To Pbx T1 (Separated Less Than 655 Ft.) - Toshiba STRATA CTX100 Installation And Maintenance Manual

T1
Applications
NDTU cable) if the other customer premise T1 equipment is more than 655 ft. from the RDTU.
The T1 span on the other end must also connect to a CSU.
Strata CTX
RDTU
5802
Figure 6-4 RDTU Connection to Digital Network or OCC
The RDTU equalization switch (SW1) must be set for "SHORT" cable length because RDTU will
be connected to the CSU with the 30 ft. NDTU cable.
Connecting CSU to CSU and CSU to the far-end PBX T1 is specified by the CSU manufacturer—
see the CSU installation documentation. Toshiba does not supply cables or connectors to connect
CSU to CSU (Cable A) or CSU to the far end PBX (Cable B).

RDTU to PBX T1 (Separated Less Than 655 ft.)

If the RDTU is within 655 ft. of the far-end PBX T1 circuit, a CSU is not required. However,
connecting a RDTU T1 span to another PBX or Key/Hybrid T1, in a Tie line configuration at a
distance less than 655 ft. (without a CSU) will require a customer provided special cable. The
transmit and receive pair of this span cable must be separated by at least five cable pairs and the
wires must be 24 AWG, twisted pair, otherwise 22 AWG, ABAM type cable must be used. See
"RDTU Cable Installation" on page
CSUs are not required if the RDTU is less than 655 ft. from the channel bank (see
Two CSUs (customer provided) are required if the RDTU is more than 655 ft. from the customer
premise channel bank (see
In Figures 6-4
Strata CTX
RDTU
T (26)
T1
R1 (2)
T1 (27)
RDTU Amphenol
Connector
(Pin No.)
Figure 6-5 Required Cables/Connectors for RDTU Connection at Distances of Less than 655 (200 Meters)
6-6
Toshiba
NDTU 30 ft Cable
CSU
Figure
and 6-6, special cable and connectors are customer-provided.
Customer-provided Special
Cable/Connectors
R (1)
RDTU
Transmit
RDTU
Receive
DS-1
Network
Interface
Unit
6-8.
6-6).
(Maximum 655 ft.)
Telco Digital Network or
Common Carrier
(AT&T, MCI, etc.)
Figure
PBX or other CPE
(2) Rr
PBX/Key
(27) Rt
System
or...
Channel
(1) Tr
Bank
(26) Tt
PBX Amphenol
Connector
Strata CTX I&M
6-4).
5803
10/02