Proscend 6200-2W, Руководство пользователя

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In the last section of this page, you can define the IP address of the default gateway and the size of MTU.
Q Q o o S S C C l l a a s s s s
The router supports UBR, CBR, VBR-rt and VBR-nrt.
UBR (Unspecified Bit Rate) is the simplest service provided by ATM networks. There is no guarantee of anything. It is a
primary service used for transferring Internet traffic over the ATM network.
CBR (Constant Bit Rate) is used by connections that requires a static amount of bandwidth that is avilable during the
connection life time. This bandwidth is characterized by Peak Cell Rate (PCR). Based on the PCR of the CBR traffic,
specific cell slots are assigned for the VC in the schedule table. The ATM always sends a signle cell during the CBR
connection’s assigned cell slot.
VBR-rt (Varible Bit Rate real-time) is intended for real-time applications, such as compressed voice over IP and video
comferencing, that require tightly constrained delays and delay variation. VBR-rt is characterized by a peak cell rate
(PCR), substained cell rate (SCR), and maximun burst rate (MBR).
VBR-nrt (Varible Bit Rate non-real-time) is intended for non-real-time applications, such as FTP, e-mail and browsing.