Verilink AS100 (896-502379-001) Product Manual Manual de usuario Pagina 14

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1-2 Access System Centum Series User Manual
Product Features and Specifications
This section explains product features and specifications.
Special Centum
Series Features
The Centum Series has a number of special features.
Built-in T1 ESF CSU
Interfacing to T1 or Fractional T1 services requires a T1 CSU (Channel
Service Unit). The Centum Series includes a built-in T1 ESF CSU as
standard equipment. The superior ESF (Extended Superframe) CSU
includes provisions for continuous performance monitoring by both the
user and the telephone company central office. ESF provides a 4 kbps
link control channel (transparent to user data) which allows the telephone
company to monitor the local loop, transmit and receive test messages
and retrieve performance data, all without interrupting normal operations.
Network Protection
The Centum Series provides complete electrical protection for the
network by automatically inserting pulses into the transmitted signal as
required to meet the bit density formula specified in AT&T Pub 62411.
Front Panel Control
The Centum Series is easy to use. Configuration and testing are
accomplished with a few buttons. Status is shown on a 32-character
liquid crystal display (LCD) screen and 10 front-panel indicators. The
LCD screen serves as a “window” that can be moved vertically. The
indicators are separated in NI (Network Interface) and serial (DTE) port
groups.
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