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OverviewThe Verilink 4019 CSU (320100175001) Plug-in is a compact and reliable channel service unit designed for high-performance telecommunications a..

Avaya Definity Integrated Channel Service Unit CSU (120A3A) Definity CSU plugs directly into system back-plane, plugs directly into the DS1 Circuit Ca..

Overview The Newbridge Networks CSU Module (part number 90-0161-01) is a compact, high-performance channel service unit designed for seamless integrat..

OverviewThe Avaya Lucent 120A6 CSU Module with DS1 Alarm is a high-performance channel service unit designed to protect and monitor digital circuits i..

Overview The Avaya 120A3A CSU Module (part number 106606536) is a high performance channel service unit designed to provide reliable line conditioning..

Overview The Avaya 120A CSU Module (part number 106606536) is a high performance channel service unit designed for reliable interface between digital ..

Overview The Avaya Lucent 120A4 CSU Module (part number 108660390, 63185A) is a high-performance channel service unit designed to provide reliable lin..

Overview The Avaya 120A4 CSU Module (part number 108660390, 63185A) is a high-performance channel service unit designed to provide reliable line condi..

Overview The Avaya 120A6 CSU Module (part number 700393770) is a high-performance channel service unit designed to provide reliable line conditioning ..

In combination with a DS1 circuit pack, it provides the essential functions of external CSUs Small size, easier to install than external CSU Does not ..

COMSPHERE 3610 Series Data Service Units (DSUs) are highly reliable, state-of-the-art products ideal for todays network-managed digital environments. ..

COMSPHERE 3610 Series Data Service Units (DSUs) are highly reliable, state-of-the-art products ideal for todays network-managed digital environments. ..