12
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OPPEER
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ATTIIO
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Once the Model IM2RC/IA is installed, it should operate transpar-
ently. The following sections describes the power-up, general operating
instructions, and the LED status monitors.
5.1 OPERATING INSTRUCTIONS
In order to operate, the Model IM2RC/IA must be installed in the
rack unit. It also requires a 10Base-T connection. After power is
applied, the IM2RC/IA automatically starts performing the bridging
function without further user intervention. MAC addresses discovered
are automatically loaded into the MAC address table. They are auto-
matically deleted from the MAC address table if they experience an
inactivity of 8 minutes.
5.2 POWER-UP
The Model IM2RC/IA is a hot-swappable rear card that receives
power from the NetLink rack power bus. Therefore, it is powered up
as soon it is plugged into the rack and the rack power supply is turned
on.
5.3 LED STATUS MONITORS
The Model IM2RC/IA features two LEDs that monitor general
operating status and the 10Base-T twisted pair link integrity. Figure 6
(below) shows the LEDs located directly beneath the RJ-45 jack.
Following Figure 6 is a description of each LEDs function.
Figure 7. IM2RC/IA, Rear Panel, LED Locations
Status LED
Yellow
Link Integrity LED
Green
Status LED
Yellow
Link Integrity LED
Green
11
2. To function properly, the Model IM2RC/IA needs one or two
twisted pairs of metallic wire (two or four wire). The twisted
pairs must be
unconditioned, dry, metallic wire, between 19
(.9mm) and 26 AWG (.4mm) (Appendix B describes cable
requirements) . Standard dial-up telephone circuits, or
leased circuits that run through signal equalization equipment,
or standard, flat modular telephone type cable, are
not
acceptable. Figure 6, below,
Figure 6. RJ-45 Line Interface
1 (no connection)
2 (no connection)
3 (4-Wire ARX-)
4 (2-Wire TIP)/(4-Wire TX+)
5 (2-Wire RING)/(4-Wire TX-)
6 (4-Wire ARX+)
7 (no connection)
8 (no connection)
1
2
3
4
5
6
7
8
NOTE:
Two-Wire Modems use RJ-45 pins 4 and 5 and 4-Wire
Modems use RJ-45 pins 3, 4, 5 and 6, as shown above. Please
see the Function Card User Manual for more details.
Summary of Contents for IM2RC/IA
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