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Chapter 3.Installation
14
ISU 2x64 Dual Port ISDN Service Unit User Manual 61200051L1-1D
If using ISU 2x64, part number 1200051L2, 1200051L4, 1200051L5,
or 1200051L6, connect an ISDN Basic Rate S/T interface to the RJ-
45 connector marked ISDN IFC. The S/T interface can be pro-
vided from an S/T line card of an ISDN switch or PBX, or from an
NT1 network termination unit.
If using a leased service, connect the network interface to the RJ-
45 connector marked ISDN IFC.
See
Connector Pinouts
on page 119 for network connection pin
assignments.
DTE DATA CONNECTION
Data terminal equipment (DTE) is connected to the ISU 2x64 by
using the RS-530/EIA-232 interfaces or by using the external RS-
530-to-V.35 adapters (part number 1200072L1). A maximum
cable length of 50 feet is recommended for the RS-530/EIA-232
interfaces. If using the RS-530-to-V.35 adapter and connected to a
full specification V.35 interface, the maximum recommended
cable length is 15 feet. The pin assignments for the DTE inter-
faces are shown in
Connector Pinouts on page 119. Be sure to con-
figure the menu option for the connector type used in your
application. See DTE Options for Asynchronous and Synchronous
Operation on page 50.
The RS-530/EIA-232 interface and the RS-530-to-V.35 interface
supports data rates up to 128 kbps. The DTE rate is configured
from the front panel of the ISU 2x64 or by using AT commands.
See Configuration to configure the ISU 2x64 with the appropriate
data rates for your application.
To prevent possible radio frequency interference emissions, a shielded
V.35 cable is required.