Sagem 1500 User Manual

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4 - Configuring the SAGEM F@st™ 1500 ADSL router
SAGEM F@st™ 1500 Reference Manual - 288053220-04
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Page 4-17
4.4.1 ATM 
PVC
Enter ATM (Asynchronous Transfer Mode) function parameters here.
Parameter
Description
Protocol
• Disable
Disables the ATM mode.
• 1483 Bridging
Bridging: Bridging is a standardized layer 2 technology. It is typically
used in corporate networks to extend the physical reach of a single
LAN segment and increase the number of stations on a LAN without
compromising performance. Bridged data is encapsulated using the
RFC1483 protocol to enable data transport.
• PPPoA:
Point-to-Point over ATM
• 1483 Routing
Use 1483 Routing protocol.
• PPPoE
Point-to-Point over Ethernet.
• MAC Encapsulated
Routing
MAC Encapsulated Routing
VPI / VCI
Virtual Path Identifier (VPI) and Virtual Circuit Identifier (VCI).
Each connection must have a unique pair of VPI/VCI settings.
Encapsulation
Specifies how to handle multiple protocols at the ATM transport layer.
• VC-MUX
Point-to-Point Protocol over ATM Virtual Circuit Multiplexer (null encapsulation)
allows only one protocol running per virtual circuit with less overhead.
• LLC
Point-to-Point Protocol over ATM Logical Link Control (LLC) allows multiple
protocols running over one virtual circuit (using slightly more overhead).