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ADDENDUM TO ISSUE 4 OF THE AXXESS MANUAL OCTOBER 1997
Page 3 of 73
16-Circuit Single-Line Card (SLC-16) and
Lamp Options Card (LOC-16)
16-Port Single-Line Card (SLC-16)
The SLC-16 can support up to 16 on-premises AC-ring-
ing single-line devices. Like the 8-circuit SLC, it does
not support off-premises stations and does not have
DID capability.
An SLC-16 cannot be installed in a card slot that is pro-
grammed for an SLC. The ports must be specifically
programmed for an SLC-16. However, if port program-
ming is changed from SLC to SLC-16, the existing
eight circuits will retain their individual programming
and the new circuits will be in the default state. If the
port is changed from an SLC-16 to an SLC, all circuits
will retain their programming, but only the first eight
will be available.
The SLC-16 uses 72VDC to generate trapezoidal ring-
ing waveforms, which have the same effect as sine
ringing waveforms. The card is capable of delivering a
total ringer equivalence number (REN) of 16.0 at a fre-
quency of 20Hz (e.g., 1.0 REN per circuit). No single
circuit should exceed a REN of 5.0. If the card requires
more than 16.0 REN total, use a larger DC power sup-
ply (available from Inter-Tel). If a fax machine, mo-
dem, or single-line set does not respond to the ringing
provided by the SLC-16, consult the manual for that
device and/or contact Inter-Tel Technical Support.
The loop limit for the SLC-16 is 103 ohms/2000 feet
(609 m.).
16-Port Lamp Options Card (LOC-16)
A 16-port Lamp Options Card (LOC-16) is also avail-
able to provide visual message waiting capabilities for
single-line sets equipped with message lamps. The
single-line sets are then configured in database pro-
gramming to receive visual and/or audible message
waiting indication tones. Except for these differences,
the installation and operation of the LOC-16 is similar
to that of the 8-port LOC described in the manual:
If installing the optional LOC-16:
a. Carefully remove the two, solid, 16-position
jumper straps from jumper locations J3 and
J4 on the SLC-16.
b. Place jumper strap (J6) on the SLC-16 in the
LOW position (over the top two pins).
c. Carefully attach the LOC-16 to jumper loca-
tions J3, J4, and J5 on the SLC-16. Make
sure that the connectors are properly aligned
and seated.
d. When programming the database, be sure to
enable the message waiting lamps in station
programming.
Power Supplies
A power supply is required for each SLC-16 because
the cards are not designed to pull talk battery, ring, or
message lamp power from the system power supply.
Power supplies are available that support one card or up
to four cards. Refer to the illustration and chart on the
next two pages for cable termination information.
NOTE: If you receive a power supply with a connector
on the wires, the connector will have to be cut off be-
fore the power supply can be installed. Also, if a four-
card power supply is wall mounted, be sure that the ful-
ly-enclosed side is on the bottom (i.e., facing down).
Part Numbers
The new SLC-16, LOC-16, and power supply part
numbers are:
SLC-16
550.2116
LOC-16 550.2104
Power Supply for 1 Card 550.0114
Power Supply for up to 4 Cards 550.0116
NOTE: The SLC-16 and LOC-16 can be used only
with version 4.3 (or higher) system software.