NEC Univerge sv8500 Manual page 2599

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Features of the DRU/DAU

The DRU/DAU has the following features.

In the case of a conventional Telephony Server, the same number of cables and Dterms/Analog PB

TELs are needed (a one-to-one ratio) to connect to the system. However, by using the DRU/DAU, a

maximum of 23 or 30 Dterms/30 Analog PB TELs can be connected to the system by a 2-Pair Cable

(therefore, the number of the cables for Dterm/Analog PB TEL can be reduced).

Even when the system is installed in a wide area (such as a factory, university, etc.), the distance be-

tween the Telephony Server and the DRU/DAU can be extended using a digital line.

Only one DRU/DAU can be connected to a maximum of 23 or 30 Dterms/30 Analog PB TELs. When

increasing the number of Dterms/Analog PB TELs, installation work is required only between the

DRU/DAU and Dterms/Analog PB TELs and no installation work is required between the Telephony

Server and the DRU/DAU.

The Dterms described in this manual correspond to the following Series Name according to the Country.

DRU/DAU does not support the connection of DT300 Series terminals.

North America

Dterm Series E

Dterm Series i

TERMINAL-RELATED DEVICES

Australia, Asia, Latin America,

Middle East, and Russia

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