Planet GRT-101 User Manual page 127

10.16.3.5 VC QoS
You can set up virtual circuit quality of service, VC QoS, using qos command. The router
supports UBR, CBR, VBR-rt and VBR-nrt. Move the cursor to qos and press enter.
>> class
pcr
scr
mbs
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.
PCR (Peak Cell Rate) in kbps: The maximum rate at which you expect to transmit data, voice
and video. Consider PCR and MBS as a menas of reducing lantency, not increasing bandwidth.
The range of PCR is 384kbps to 11392kbps
SCR (Substained Cell Rate): The sustained rate at which you expect to transmit data, voice
and video. Consider SCR to be the true bandwidth of a VC and not the lone-term average
traffic rate. The range of SCR is 384kbps to 11392kbps.
MBS (Maximum Burst Size): The amount of time or the duration at which the router sends at
PCR. The range of MBS is 1 cell to 255 cells.
10.16.3.6 ISP
ISP command can configure account name, password and idle time. Idle time is from 0 minute
to 300 minutes.
10.16.3.7 IP Type
Configure QoS class
Configure peak cell rate (kbps)
Configure sustainable cell rate (kbps)
Configure max. burst size (cell)
GRT-101/401/402 User's Manual
127 - -
G.SHDSL Bridge/Router