ADTRAN 1200410L2, User Manual

Page: 25 / 80

Chapter 2. Installation
61200410L2-1A ESU LT User Manual 25
ESU LT Interfaces
The ESU LT is equipped with four interfaces:
• E1 Network interface per ITU G.703
• Nx56/64 high-speed, multi-protocol serial interface
• Control input (EIA-232)/Chain port input
• Chain port output
See Figure 2-2 and the following descriptions in this section.
Figure 2-2. ESU LT Interfaces
Network Interface (NI)
The Network Interface (NI) port provides the connection to the E1.
This port complies with the applicable ANSI and CCITT standards.
The 120
Ω
DB-15 interface (adapter provided) may be used for the
NI. For more information, see Appendix B, Pinouts on page 69.
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
56 kbps to 2.048 Mbps. The Nx56/64 can be configured as a V.35,
V.36, EIA-530, or V.11 electrical interface through the front panel
menus.
ESU LT
ESU LT