3com 900-0387-01 Manual Do Utilizador

Página de 28
 
 V6000 Analog Integrated Branch Office Solution Installation Guide V6000 Analog Integrated Branch Office Sol
 
Where ‘network’ appears in this manual, it means LAN, WAN, etc. accessed via 
the gateway’s Ethernet interface. 
FXO (Foreign Exchange Office) is the interface replacing the analog telephone 
and connects to a Public Switched Telephone Network (PSTN) line from the 
Central Office (CO) or to a Private Branch Exchange (PBX). The FXO is designed 
to receive line voltage and ringing current, supplied from the CO or the PBX (just 
like an analog telephone). An FXO VoIP gateway interfaces between the CO/PBX 
line and the Internet. 
FXS (Foreign Exchange Station) is the interface replacing the Exchange (i.e., the 
CO or the PBX) and connects to analog telephones, dial-up modems, and fax 
machines. The FXS is designed to supply line voltage and ringing current to these 
telephone devices. An FXS VoIP gateway interfaces between the analog 
telephone devices and the Internet. 
The FXO port is considered to be TNV-3. FXS ports are considered to be TNV-2. 
Each abbreviation, unless widely used, is spelled out in full when first used, and 
only Industry standard terms are used throughout this manual. The symbol 0x 
indicates hexadecimal notation. 
Pursuant to the WEEE EU Directive, electronic and electrical waste must not be 
disposed of with unsorted waste. Please contact your local recycling authority for 
disposal of this product.