D-Link DSL-G604T User Manual page 40

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CBR – Constant Bit Rate, usually used in circumstances where very low packet loss and very low
Cell Delay Variable (CDV) are desirable.
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VBR – Variable Bit Rate, usually used when network traffic is characterized by bursts of packets
at variable intervals, and some moderate packet loss and delay is acceptable. This category is
typically used for audio and video applications such as teleconferencing. The network must
support QoS Class 2 to use VBR.
PCR: PCR (Peak Cell Rate) refers to the Bandwidth control on your ADSL router. This field allows
you to enter a value representing the maximum bps (bits per second) the ADSL router can receive.
This field is limited by the stream coming form your ISP.
SCR: SCR (Sustained Cell Rate) refers to the Bandwidth control on your ADSL router. This field
allows you to enter a value representing the minimum bps (bits per second) the ADSL router can
receive. After making the changes to this screen, click Apply to let your changes take effect.
DSL-G604T 54Mbps Wireless ADSL2/2+ Modem/Router Manual
40