Verilink T1 ESF CSU (34-00309.B) Product Manual - Manual (Page 13)

Introduction 1
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Introduction
Verilink’s T1 ESF CSU provides an economical solution for providing the T1 interface
between customer premises equipment and T1 facilities (telco or private). Each unit is
compatible with all T1 carrier transmission equipment and is designed to comply with
all industry-standard specifications. Both the transmitted and received 1.544 Mbps
signals are conditioned.
The T1 ESF CSU is an industry standard T1 channel service unit. It detects and
activates network initiated loopbacks, monitors bipolar violations, and maintains pulse
density of the transmitted signal. The unit is capable of interfacing to both B8ZS and
AMI circuits and can convert signal formats or line coding to integrate older equipment.
Automatic transmission of ESF performance report messages (PRM) is also supported
by the T1 ESF CSU.
The unit is designed to be wallmounted using hook-and-loop fasteners or “T” openings
on the base (like a telephone). The unit can also be set on a desktop.
The unit provides ALBO circuitry on the network receive path. The network ALBO
supports a receive range from +1 to
−
30 decibels. The DTE supports DSX1 signal
ranges up to 655 feet. The unit also provides line build out (LBO) circuitry on both
network and DTE. The network transmit LBO is user selectable in four increments
(from 0 to
−
22.5 decibels). The DTE transmit LBO is user selectable in five increments
from 0 to 655 feet.
The T1 ESF CSU operates from an external power source. Network and DTE
connections are made through RJ-48C connectors. The units have primary and
secondary surge protection on both the network and DTE side (meeting the UL 1950
requirements).
Features
✦ Provides T1 facility interface and jitter tolerance per ANSI
T1.102, T1.403, and AT&T TR 62411
✦ Supports B8ZS or AMI formats
✦ Conversion for signal formats and line coding
✦ Supports PRM in ESF mode
✦ Space-saving design can be desktop or wall mounted
✦ Standard 5-year warranty