NEC Xen Topaz System Hardware Manual page 94

September 2004
86 - Chapter 11
Output Impedance
Output Level
Maximum Output
Configuration
BGM / ExMOH Source Input Specifications
Input Impedance
Input Level
Maximum Output
External Paging Output Specifications
Output Impedance
Output Level
Maximum Output
EXIFU-A1 LAN Port Specifications
Standard
Access
I/F (Layer 1)
• Do not run extension cable in parallel with the AC source, telex or computer etc. If the
cables are near cable runs to those devices, use shielded cable with grounded shields or
install the cable in conduit.
• When cables must be run on the floor, use cable protectors.
• Cable runs for Key Telephones, DSS Consoles, Single Line Telephones, and Doorphone
Boxes must be a dedicated, isolated cable pair.
• Aerial distribution cabling is not allowed.
• Trunk Lines must be installed with lighting protectors.
• Do not use 4-wire cabling for DSS Console and SLT connections. Use only 2-wire (centre
Pair).
Doorphone Specifications
Ω
600
Nominal 250mV (-10dBm)
400mV RMS
Normally open
Ω
600 @ 1kHz
Nominal 250mV (-10dBm)
1V RMS
Ω
600 @ 1kHz
Nominal 250mV (-10dBm)
400mV RMS
IEEE802.3 10 Base-T and 100Base-TX
Compliant
CSMA/CD
Speed: 10Mbps/100Mbps Auto Negotiation
Cable: CAT5 or better, Straight/Cross Auto
Crossover
Cabling Requirements
NEC Business Solutions Ltd
Specifications