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ESU120E INTERFACES
The ESU 120e is equipped with an Nx56/64 data port, a G.703 drop
interface, an option slot, management interfaces, and an E1 inter-
face in the rear panel. See Figure 2-2.
PC or Modem
Network
Network Interfaces
The Network Interface (NI) port provides the connection to the E1.
This port complies with the applicable ANSI and CCITT standards.
Either the 120
the Network Interface. The 75/120 selection must be made with
the front panel menus. For more information see Wiring on page B-
1.
Network Test Interface
The MON test jack provides a bridged access jack for non-intrusive
monitoring of the incoming E1.
Nx56/ 64 Serial Interface
The Nx56/64 provides a serial interface that operates from 56kbps
to 1.984Mbps. The Nx56/64 can be configured as a V.35, V.36, EIA-
530, or V.11 electrical interface through the front panel menus. This
port provides 511 pattern generation and detection, as well as
remote loopback capability.
61200420L1-1
10BaseT LAN
Control
Chain
Input
Output
NI
ESU 120e
Drop
Nx56/64
Option
PBX
V.35
RS530, V.11
Figure 2-2. ESU 120e Interfaces
DB15 or the 75 BNC interface may be used for
ESU 120e User Manual
Chapter 2. Installation
Chain
Chain
Input
Output
NI
ESU 120e
Drop
Nx56/64
Option
V.35
PBX-1
RS530, V.11
2-5
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