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Prestige 630-C Series ADSL USB Modem
Basic Configuration 6-3
Table 6-1 WAN Configuration
LABEL DESCRIPTION
VPI Enter the Virtual Path Identifier(s) (VPI) given.
VCI Enter the Virtual Channel Identifier(s) (VCI) given.
Static IP Address This is the static IP provided by your ISP.
Subnet Mask This is the corresponding subnet mask for the above IP address.
Gateway This is the gateway IP address.
ATM
Service Category
Select the service category (UBR or CBR).
Bandwidth Bandwidth setting takes effect only when the CBR is selected. Enter a bandwidth
in kbps.
Encapsulation
Choose an encapsulation type. The choices are as follows: PPPoA VC-MUX,
PPPoA LLC, 1483 Bridged IP LLC, 1483 Routed IP LLC, 1483 Bridged IP
VC-Mux, 1483 Routed IP VC-Mux, Classical IP over ATM, PPPoE VC-Mux,
PPPoE LLC, and PPPoE None.
PPP
Service Name If your ISP provided you a service name, enter it here.
User Name Enter your ISP-assigned user name.
Password Enter your ISP-assigned password.
MRU
The Maximum Receive Unit (MRU) indicates the maximum size of the PPP
information field that this device can receive. The default value is 1492 and is
used in the beginning of the PPP negotiation. During negotiation, the peer will
accept this MRU and will not send packets with information fields larger than this
value.
MTU If the network stack of any packet is larger than the Maximum Transmission Unit
(MTU), it will be fragmented before transmission. During PPP negotiation, the
peer of the PPP connection will indicate its MRU. The actual MTU of the PPP
connection will be set to either the MTU or the peer’s MRU (whichever is
smaller). The default is value 1492.
MSS
The Maximum Segment Size (MSS) is the largest size of data that TCP will send
in a single IP packet. When a connection is established between a LAN client
and a host on the WAN side, the LAN client and the WAN host will indicate their
MSS during the TCP connection handshake. The default value is 1432.