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2 Megabit Modem 500L Installation Manual
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FEATURES
The Megabit Modem 500L provides:
• rate-adaptable ADSL transmission downstream at up to 1.5 Mbps and upstream at
up to 512 kbps
• Internet or other types of WAN applications and phone service over your existing
phone line
• Point-to-Point Protocol (PPP) encapsulation method
• Password and Challenge-Handshake Authentication Protocols (PAP/CHAP) for
authentication of PPP sessions
• Network Address Translation (NAT) protocol to map the user to the PPP session
• Dynamic Host Configuration Protocol (DHCP) server to provide network configuration
information including IP addresses to LAN devices
• TFTP to download software
• AccessGain™ software to provide access through an HTTP server to configure, manage,
and monitor the modem through a Web-based interface
• SNMP agent for management through any industry standard SNMP platform
• autodetecting 10/100BASE-T Ethernet port for connection to the LAN
• DSLview™ LEDs to provide continual status at-a-glance of power, LAN, and
ADSL connections
• ATM technology with three virtual channels to allow one active Internet or other
WAN application session at a time
• PriorityVoice™ to allow full deployment of the modem without splitters or microfilters
• InstaConnect™ to sense phone activity and optimizes performance
On a Megabit Modem 500L, you can configure three PPP over ATM sessions. However, you
can enable only one of the sessions at a time. You assign the user to the session that is active.
Chapter 9 on page 55 provides more information about the technologies implemented in the
Megabit Modem 500L.