Dsu Dte Connection - Paradyne COMSPHERE 3610 Operator's Manual

DSU DTE Connection

The DSU-to-DTE interface for the non-modular and
modular DSUs is described in the following sections.
Appendix E provides connectivity diagrams should
you need further assistance in connecting the DSU to the
network.
Non-Modular DSUs
The DTE interface for each non-modular Model 3611
circuit card is an EIA-232-D/V.24 (ISO 2110) 25-pin
connector for operation at rates up to and including
19.2 kbps, and a ITU-T V.35 (ISO 2593) 34-pin connector
for operation at all available rates
non-modular DSU can be configured to use either
interface independently of the other circuit cards in the
carrier. Connection of the DSU to the DTE is a matter of
selecting and installing the appropriate cable.
To install the DTE:
"
Procedure
1. Connect the plug end of the DTE cable to the
interface to be used on the rear of the circuit card.
Tighten the two holding screws, if present, to
secure the connector.
2. Add the ferrite choke to each cable, if needed,
securing the choke into position with the cable tie
provided. Refer to the Ferrite Choke, Installation
Instructions.
3. Connect the other end of the cable to the
appropriate port on the terminal, front-end
processor, or other DTE device. Tighten the two
holding screws, if present.
NOTE
If you connect the DTE to the
V.35 connector, you must set the
DTE Port configuration option to
V.35 before the DSU can
communicate with the DTE. (The
default for this option is EIA232.)
Refer to Table 6-10, the
Configuration Options.
3610-A2-GB91-90
(Figure 3-4). Each
General
July 1999
4. Perform the tests described in the
Testing section of this chapter to verify proper
operation.
If you connect the DTE to the V.35 connector, you
must set the DTE Port configuration option to V.35 before
the DSU can communicate with the DTE. (The default for
this option is EIA232.)
Modular DSUs
The DTE interface for each rear V.35 connector on the
Modular 3611 DSU is provided on the circuit card's rear
connector plate. The rear connector plate has two DB25
(or 25-pin D-type) connectors. The top connector is an
EIA-232-D/V.24 (ISO 2110) connector. The bottom
connector is a ITU-T V.35 (ISO 2593) connector.
To use the 25-pin V.35 connector (used for speeds
greater than 19.2 kbps), a V.35 adapter plug is needed.
This adapter provides the interface between the 25-pin
V.35 D-type connector and a V.35 DTE cable.
In applications where the screws of the V.35 adapter
plug might be difficult to fasten because of conflict with
other connectors, use instead a V.35 adapter cable (feature
number 3000-F1-510).
Each modular DSU can be configured to use either
interface independently of the other circuit cards in the
carrier. Connection of the DSU to the DTE is a matter of
selecting and installing the appropriate cable. Refer to the
COMSPHERE 3000 Series Carrier, Installation Manual
for installation procedures.
Appendix E provides connectivity diagrams for further
assistance in connecting the DSU to the network.
Model 3611 Installation
Verification
3-11