The Avaya channel service unit (CSU) is the interface between the 100D module and the DS1 facility provided by the telephone company. This facility contains 24 channels on one 4-pair wire.

The CSU is a hardware component needed when two endpoints are located in different buildings or when the distance between the two endpoints makes office or line repeaters necessary. The CSU is located on the customer's premises and is used to connect the system to DS1 network facilities.

Avaya Channel Service Unit Modules

Avaya Channel Service Unit Modules
Avaya 120A2 Channel Service Unit Module (120A2)

Avaya 120A2 CSU Module Channel Service Unit When the Avaya 120A2 CSU Module Channel Service unit is used in combination with a DS1 circuit pack,...

Avaya 120A2 CSU Module Channel Service Unit When the Avaya 120A2 CSU Module Channel Service unit ...

In Stock
Avaya Channel Service Unit Modules
Avaya 120A3 Channel Service Unit Module (120A3)

Avaya 120A3 CSU Module Channel Service Unit The Avaya 120A3 CSU Module Channel Service Unit will provide users essential functions when combined with a DS1...

Avaya 120A3 CSU Module Channel Service Unit The Avaya 120A3 CSU Module Channel Service Unit will ...

In Stock
Avaya Channel Service Unit Modules
Avaya 120A4 Channel Service Unit Module (120A4)

Avaya 120A4 CSU Module Channel Service Unit The Avaya 120A4 CSU Module Channel Service unit is used to provide function of external CSU's while in...

Avaya 120A4 CSU Module Channel Service Unit The Avaya 120A4 CSU Module Channel Service unit is us...

In Stock
Avaya Channel Service Unit Modules
Avaya 120A5 Channel Service Unit Module (120A5)

Avaya 120A5 CSU Module Channel Service Unit The Avaya 120A5 CSU Module Channel Service Unit comes equipped to provide the essential function of external CSU's...

Avaya 120A5 CSU Module Channel Service Unit The Avaya 120A5 CSU Module Channel Service Unit comes...

In Stock
Avaya Channel Service Unit Modules
Avaya 120A6 Channel Service Unit Module (120A6)

Avaya 120A6 CSU Module Channel Service Unit The Avaya 120A6 CSU Module Channel Service Unit will provide users the necessary function of external CSUs when...

Avaya 120A6 CSU Module Channel Service Unit The Avaya 120A6 CSU Module Channel Service Unit will ...

In Stock