Instruction manual

5
NOTE: Bandwidth cannot be configured on the SNE2000-S or SNE2000Q-S.
Subscriber units determine bandwidth via communication with their partner SDSL
provider units.
Ethernet Duplex Mode
Switch 4 configures Duplex Mode on the SNE2000-P, SNE2000-S, SNE2000Q-P and
SNE2000Q-S.
The Ethernet link can be configured at either Full Duplex or Half Duplex mode. Although
both ends of the Ethernet connection must have the same duplex mode configuration, it
is not necessary for partner providers and subscribers to be configured the same;
duplex mode does not apply to the SDSL link.
 Half Duplex Ethernet – Receive and transmit functions are mutually exclusive. Data
transmission occurs in only one direction at a time. Packet collisions are not
unusual.
 Full Duplex Ethernet – The Ethernet line can receive and transmit simultaneously,
effectively upping aggregate bandwidth from 10 Mbps to 20 Mbps and preventing
packet collisions.
Table 2. SNE2000Q-P Bandwidth and Distance Options
Switch Position
Bandwidth
(kbps)
Distance
1 2 3 Feet Meters
down down down 2,320 10,400 3,170
down down up 2,064 10,800 3,292
down up down 1,552 13,400 4,084
down up up 1,040 14,800 4,511
up down down 784 15,800 4,816
up down up 528 17,400 5,304
up up down 400 18,200 5,547
up up up 272 19,200 5,852
Table 3. Duplex Settings Using Switch 4
Position Setting
down Half Duplex
up Full Duplex