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An Example System Setup
These two pages shows an example system with two 206 modules
and one 200 module, giving it a capacity of 6 outside lines and up
to 12 extensions. In the example, system phones and industry-
standard equipment are connected to 9 extensions. An ordinary
110 VAC grounded wall outlet (not controlled by an on/off switch)
supplies power to the control unit. The circled numbers in the
figure refer to the following list, which gives a brief description of
the system's hardware components.
Control Unit
The control unit consists of a backplane, cover (not shown), one
processor module, and up to four 206 or 200 modules.
Backplane. The backplane channels power to the system
and connects the modules together.
Processor Module. The processor module provides most of
the system features. It also has Music-on-Hold and paging
jacks.
206 Modules. Each 206 module has jacks for 2 incoming
telephone lines and 6 extensions. The system must have at
least one 206 module, and can have up to four, so the
maximum system capacity is 8 lines and 24 extensions.
200 ModuIe. The 200 module is similar to the 206 module,
but without extension jacks. You can have up to three 200
modules in the system (installed to the right of all 206
modules). Each 200 module provides 2 additional outside
lines but no additional extensions.
Line Jacks. Outside telephone lines connect to the top two
jacks on each 200 or 206 module.
Extension Jacks. Inside wiring for telephones and other
telecommunications equipment connects to the bottom six
jacks on each 206 module.
Music-on-Hold Jack. The audio source plugs directly into
this jack. You can connect any type of audio equipment to
your system (including a CD player, cassette player, stereo
receiver), but you must supply an audio cord with an RCA
phono plug. In this example, AT&T Music On Hold is
connected directly to the Music-on-Hold jack on the proces-
sor module to provide customized music and messages for
callers on hold. For information on Music on Hold, call your
AT&T representative or call the AT&T Sourcebook at 1 800
451-2100.
PAGE Jack. The loudspeaker paging system plugs directly
into this modular jack on the processor module. Your phone
system is compatible with AT&T's PagePac paging systems.
The PagePac6 is shown here.
Network lnterface Jacks. These jacks provide access to
telephone lines coming from the local telephone company or
from another system, such as a PBX (Private Branch Ex-
change) or Centrex system. To connect each outside line to
your system, plug one end of a line cord into one of these
jacks and the other end into a line jack on a 200 or 206
module.
Extensions
This example system shows various devices—including both
system telephones and industry-standard devices—connected to
each extension. System extensions connect to the extension jacks
in the control unit by way of your building's inside wiring.
Extension 10: The following devices are on extension 10:
MLS-34D Display Phone. In this example, the receptionist
on extension 10 has a 34-button display phone. This
phone can handle 8 outside lines. You can also program all
extensions on your system as Auto Dial buttons (see
2-2 Installing the Hardware
Chapter 3), to show the status of up to 24 extensions. To
program the system or system telephones from extension
10, you must use a system display phone (MLS-34D or
MLS-12D). The display on these phones shows the date,
day, time, number dialed, duration of calls, and program-
ming messages.
AT&T 267F2 Bridging Adapter. This adapter lets you
connect two devices—in this example an MLS-34D display
phone and a standard touch-tone phone on one exten-
sion jack. The adapter has two modular jacks, one for
each phone. The bridging adapter plugs into a wall jack or
directly into an extension jack on the 206 module.
Standard Touch-Tone Telephone for Power Failure
Operation. In the event of a power failure, the first exten-
sion jack on each 206 module connects to the first outside
line on that module, to provide continuous service to
standard telephones. In this example, the MLS-34D phone
on extension 10 will not work during a power failure.
However, the receptionist can use the standard touch-tone
phone connected to extension 10 to place and answer
calls on line 1.
Extension 11: MLS-12 Telephone. This 12-button system
phone has the same controls as the MLS-12D telephone (see
extension 16), but it has no display.
Extension 12: MLS-6 Telephone and Answering Machine.
using a 267F2 bridging adapter, both a 6-button system
phone and an answering machine are connected to one
extension. The MLS-6 phone accommodates up to 4 outside
lines.
Extension 13: Industry-Standard Telephone. A standard
single-line touch-tone phone (such as you might have in your
home) is connected directly to the extension jack.
Extension 14: Doorphone. A doorphone is installed at the
entrance. When someone at the entrance presses the button
on the doorphone, up to 5 designated telephones in the office
ring automatically.
Extension 15: Bell. A loud bell is connected directly to the
extension jack.
Extension 16: MLS-12D Display Phone. In this example,
extension 16 has a 12-button display phone. This phone can
handle 8 outside lines and has a display showing the date, day,
time, number dialed, duration of calls, and programming
messages. Also, its programmable buttons (two with lights)
can store additional features and Auto Dial numbers.
Extension 17: Fax Machine and Standard Telephone. A
fax machine and standard touch-tone phone are connected
together on an extension jack. This setup lets you share the
fax line with a telephone.
Alternatively, you can use a system phone at another
extension to monitor the fax machine (Fax Management). To
do so, first use System Programming to identify the fax
machine extension. Then program a lighted button on the
system phone with the fax extension as an Auto Dial number.
You can then use the Auto Dial number to quickly transfer
calls from that extension to the fax machine. In addition, the
light on that button shows whether the fax machine is in use,
busy, returning a call you transferred to it, or not answering
calls. If your AT&T fax machine includes the Notify feature,
the fax machine can also notify you when a fax has been
received.
Extension 18: MLC-6 Cordless Telephone. An AT&T MLC-
6 cordless system telephone is connected to extension 18.
This phone works like the corded MLS-6 system phone, but
gives you mobility.
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