Allied Telesis AT-AR020 PRI E1/T1 Hardware Reference Manual page 14

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Figure 11: Location of user configurable links on the AR026 4ETH PIC
Link Detail
Link
1 2 3
Pads
Link Options
Up = 10kΩ link between pads 1 and 2
Down = 1kΩ link between pads 2 and 3
Floating = No links
All configurable links use 603 resistors
Links 22, 31, 40, and MRXD 3 are fixed and
cannot be configured
Ethernet ports
The AT-AR026 PIC is a single card.
configurable links. AT-AR026 PICs do not support the AlliedWare Diagnostic
or Test Facility modules.
AT-AR026 PICs include a switch chip that switches independently of the
switch, router, or NSM that the PIC is installed in. The show interface
command will show each correctly installed AT-AR026 as a single interface (the
PIC connector). The 10/100 'front side' Ethernet ports will not be shown.
Figure 11 shows the layout of its board and
Configurable links
Port Interface Card
PIC connector
AR026Card
C613-03023-00 REV J