14
2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T
Switch S3-1 through S3-6: DTE Rate
Use Switch S3-1 through S3-6 to provision bandwidth to the LAN in 64-kbps
increments up to 1.152 Mbps. Peak bandwidth utilization on the local domain on
an Ethernet LAN runs typically between 15% to 20% (1.5 Mbps to 2 Mbps) of the
maximum bit rate of 10 Mbps. Traffic between LANs typically runs even lower—
between 2% to 7% (200 kbps to 700 kbps) of the maximum bit rate depending
upon application and environmental conditions. This is the amount of traffic that
will run across the DSL span.
Set Switches S3-1 through S3-6 to allocate bandwidth based upon expected LAN-to-
LAN traffic rates. For example, set applications with low LAN-to-LAN bandwidth
content between 64 kbps and 576 kbps. Applications with high bandwidth LAN-to-
LAN content should be set between 576 kbps and 1.152 Mbps as required.
Table 4-4. DTE rate.
S3-1
S3-2
S3-3
S3-4
S3-5
S3-6
DTE Rate (kbps)
Off
Off
On
On
On
On
64
On
On
Off
On
On
On
128
Off
On
Off
On
On
On
192
On
Off
Off
On
On
On
256
Off
Off
Off
On
On
On
320
On
On
On
Off
On
On
384
Off
On
On
Off
On
On
448
On
Off
On
Off
On
On
512
Off
Off
On
Off
On
On
576
On
On
Off
Off
On
On
640
Off
On
Off
Off
On
On
704
On
Off
Off
Off
On
On
768
Off
Off
Off
Off
On
On
832
On
On
On
On
Off
On
896
Off
On
On
On
Off
On
960
On
Off
On
On
Off
On
1024
Off
Off
On
On
Off
On
1088
On
On
Off
On
Off
On
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