Connecting Analog Line Cards - 3Com 3C10111C - NBX 100 - Modular Exp Base Installation Manual

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HAPTER NSTALLING
Connecting Analog
Line Cards
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YSTEM ARDWARE OMPONENTS
You can install cards with the power on. To connect and configure the
NBX Analog Line card:
1 Remove the blank faceplate from one of the slots.
2 Verify that the edges of the card ride in the chassis guide slots, and then
slide the card in until you feel slight resistance. Press firmly on both sides
of the front of the card until you feel it seat in the connector, and then
tighten the two knurled knobs.
If you cannot seat the card with light pressure, remove it and check for
obstructions.
3 After you seat the card, wait 2 minutes (more on a SuperStack 3 NBX
system with many devices) for the card to initialize.
4 Auto Discover the line card. The Auto Discover feature finds each line
card and assigns extensions. For more information, see
Auto Discover for Initial System Configuration"
3Com recommends that you install the cards in MAC address order. This
practice makes it easier to diagnose and troubleshoot problems.
Mapping Line Card Ports to Telephone Lines
You can run the system using the default configuration, but to have
complete control over telephone operations, you need to know which
telephone line is assigned to which line card port so that you can map
CO telephone lines to telephones and manage lines for maximum
performance. Use the NBX NetSet utility to quickly reassign extensions.
When you connect the telephone lines, the order in which the telephone
lines deliver calls matches the order of line card port extensions. For
example, connect the line that rings first to the port with the lowest
numbered extension, connect the next telephone line to next-lowest
extension, and so forth. Extension numbers for Line Card ports are
assigned based on the first unused extension number. Therefore, the
extensions vary from system to system.
Line card ports are labeled on the front panel of the card. The first
connector, labeled PFT (Power Fail Transfer), accepts a standard POTS
(2500 touch-tone series compatible) telephone. If there is a power failure,
this port continues to provide dial tone and telephone service. Do not
count this port as a line port.
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on page 91.