Specifications

AT-VP504E FXS ix
P
Introduction
The AT-VP504E FXS is a telephony adaptor that connects analog
telephones or fax machines to a Local Area Network with access to an
IP Network to permit high-quality, full duplex, audio/fax
communications over IP Packet Networks.
Before you Begin This manual provides all the information needed to install and manage
the AT-VP504E FXS. It is intended for network administrators who
install and set up network equipment; consequently, it assumes a basic
working knowledge of LANs.
From the perspective of the LAN administrator, an AT-VP504E FXS
presents itself just like another PC that is to be added to the LAN. It will
require the same kind of TCP/IP addressing that is required by a PC.
The AT-VP504E FXS can also use a DHCP server on the LAN to
receive its IP configuration assignment automatically.
Acronyms
What’s New in this Version
• 802.1q QoS priority tagging. See “IEEE 802.1q” on page 65 for more details.
• VLAN QoS priority tagging. See “VLAN” on page 66 for more details.
• Simple Network Time Protocol (SNTP). See “SNTP Settings” on page 72 for more details.
• Call transfer – Unsupervised. See “Call Transfer – Unsupervised” on page 106 for more
details.
BORSCHT Battery feed, Over-voltage protection, Ringing,
Signalling, Coding, Hybrid, and Testing
CPU Central Processing Unit
DHCP Dynamic Host Configuration Protocol
DNS Domain Name Server
DSP Digital Signal Processor
FXS Foreign Exchange Service
IP Internet Protocol
ISDN Integrated Services Digital Network