Vdh2(8)-U( ) Etu; Description; Specifications; Table 5-41 Vdh2(8)-U( ) Etu Specifications - NEC ElectraElite 48 System Hardware Manual

Issue 6
5 - 86
5.9

VDH2(8)-U( ) ETU

5.9.1

Description

The VDH2(8)-U( ) ETU integrates both LAN and station
cabling. This is a standard ESI ETU with additional circuitry
for the LAN integration function.
Key Telephones are connected to the VDH2(8)-U( ) ETU
using a VDD-U Unit.
Each VDH2(8)-U( ) ETU has a built-in HUB facility with
eight ports (IEEE 802.3 10Base-T).
A VDD-U( ) adapter is required at each digital station or
Attendant Console. Refer to
on a Multiline Terminal in Chapter 7 on page
5.9.2

Specifications

Refer to

Table 5-41 VDH2(8)-U( ) ETU Specifications

Description
Access Method
Transmission Speed
Transmission Interface
10Base-2
10Base-T + Dterm Interface
Transmission Cable Type and Maximum Cable Length
10Base-2
term
10Base-T + D
Table 5-41 VDH2(8)-U( ) ETU
General Specifications
CSMA/CD Method (IEEE 802.3)
10 Mbps
10Base-2:
10Base-T + D
Transmission Interface Connectors
BNC (coaxial cable)
RJ-45 (modular for 10Base-T)
Coaxial Cable – 606.8 feet (185 meters)
Twisted Pair Cable (LAN Category 3 or
Interface
higher) – 328 feet (100 meters) for
10Base-T technology
Installing Electronic Telephone Units
Electra Elite
3.11.1 Installing a VDD-U Unit
7-38.
Specifications.
Specifications
term
Interface:
.
1 port
8 ports