NEC Aspire, Руководство пользователя, Страница: 239 / 262

Section 4: Speci Þ cations and Parts List
Product Description 231
4
Door Box/External Paging
Output Impedance:
Output Level:
Maximum Output:
Con
Þ guration:
600 Ohm
Nominal 250 mV (-10 dBm)
400 mV RMS
Normally open
LAN Speci Þ cations
Standard IEEE802.3 10Base-T and 100Base-TX Compliant
Access CSMA/CD
Capacity 10Base-T/100Base-TX;
Aspire S: 1 Port for LAN Terminal
Aspire: 8 Ports for LAN Terminal
I/F (Layer 1) - Speed; 10Mbps/100Mpbs Auto Negotiation
- Cable; Category 5 or better, Straight/Cross Cable Auto Crossover
Aspire Switching - Store and Forward Layer 2 Switching
- MAC Address Auto Recognition
- Store Max. 1,000 MAC Addresses
- Flow control in Back Pressure Mode Compliant
SLT Adapter
Constant Current Circuit: Current Þ xed at 47 mA
Signal Method
On-Hook Condition: 48VDC
Ringer Signal: 180 Vp-p, 16Hz
SLIU PCB / SLIDB
Aspire S Signal Method
On-Hook Condition: -28VDC +- 1.4VDC
Message Waiting Signal: -- 5.5VDC
Ringer Signal: 65Vrms, 20Hz (with no load)
Note: The Message Waiting lamp is not provided to the analog ports on the CPU.
Aspire Signal Method
On-Hook Condition: -46VDC +- 3VDC
Message Waiting Signal: -- 3VDC or FSK
Ringer Signal: -1Vrms (no load condition), 20Hz +-1%
UL Listed System
A label will be af Þ xed to the product with the letters UL inside a circle which is the symbol used by UL
to indicate that a product is UL Listed. If you see a small “c” outside the symbol, then the product also
meets the requirements for Canada.