MicroNet Technology SP3367N user manual ATM QoS, Pcr, Scr, Mbs, Encapsulation

Models: SP3367N

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CBR (Constant Bit Rate) – This class is used for emulating

 

circuit switching. The cell rate is constant with time. Select

 

CBR to specify fixed (always on) bandwidth for voice or data

 

traffic.

 

UBR (Unspecified Bit Rate) – Select UBR for applications

 

that are non-time sensitive, such as e-mail.

ATM QoS

rtVBR (real time Variable Bit Rate) – This class is similar to

nrtVBR but is designed for applications that are sensitive to

 

cell-delay variation. Examples for real-time VBR are voice

 

with speech activity detection (SAD) and interactive

 

compressed video.

 

nrtVBR (non-real time Variable Bit Rate) – This class

 

allows users to send traffic at a rate that varies with time

 

depending on the availability of user information. Statistical

 

multiplexing is provided to make optimum use of network

 

resources. Multimedia e-mail is an example of nrtVBR.

PCR

Divide the DSL line rate (bps) by 424 (the size of an ATM cell)

to find the PCR (Peak Cell Rate). This is the maximum rate at

 

which the sender can send cells.

SCR

SCR (Sustain Cell Rate) is the average rate, as measured

over a long interval, in the order of the connection lifetime.

 

MBS

MBS (Maximum Burst Size) refers to the maximum number of

cells that can be sent at the peak rate. Type the MBS, which

 

is less than 65535.

Encapsulation

The router can be connected to your service provider in any of the following ways.

 

Parameter

 

Description

 

 

 

 

 

Dynamic IP Address

 

ISP will automatically provide an IP address.

 

 

 

 

 

Static IP Address

 

ISP has given users an IP address already.

 

 

 

 

 

PPPoE/PPPoA

 

PPPoE (PPP over Ethernet) and PPPoA (PPP over ATM) are

 

 

common connection methods used for xDSL.

 

 

 

 

 

 

 

 

Bridge Mode

 

Device will act as modem only equipment to prevent conflict

 

 

with other routers.

 

 

 

Dynamic IP Address/Static IP Address/PPPoE/PPPoA/Bridge Mode

After you have selected the ISP Type, this web page will be varied depending on the ISP Type you select. Please refer to the following table for the explanation of each parameter.

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MicroNet Technology SP3367N user manual ATM QoS, Pcr, Scr, Mbs, Encapsulation