SECTION MITL9103-098-100-NA
TABLE 4-1
SX-5
FEATURES
Alarm Indication Lockout
Automatic Callback
-
Busy MakeIBreak Ratio
Automatic Callback
-
Don't Answer Mixed Station Dialing
Automatic Station Release Music on Hold
Background Music NightIDay Service
Call Forwarding
-
All
Calk
Power Failure Restart
-
Battery
Call Forwarding
-
Busy Power Failure Restart
-
PROMIROM
Call Hold, Retr~evefrom Power Failure Transfer
-
Both Trunks
any Station Privacy
-
Automatic
Common Audible Ringing Programmable Disconnect Timing
Console-less Operation Programming
Control Extension Reversal Meaning
Control Functions Rotary Dial Pulse-to-Digit Conversion
Data Line Security Selectable Numbering Plans
Default Data Selectable Ringing Frequency
Dial Call Pickup Speed Dial
Direct-In Lines Timed Recalls
Direct Outward Dialing Toll Restriction
Direct Trunk Select Tone-to-Pulse Conversion
Discriminating Ringing Transfer/Add-On/Consultation Hold
i.
Trunk vs Intercom Trunk Camp-On with Indication
ii. Trunk
1
vs Trunk
2
Trunk Group Operation
Do Not Disturb Trunk-to-Trunk plus Extension Conference
Extension Switchhook Flash Timing Voice Paging
,
Last Number Redial Wait for Dial Tone
4.03
Most system and extension features are
inherently activated in the SX-5, thereby
reducingthe amount of programming necessary.
4.04
Some programming may be necessary to
customize the data base for such features
as Toll Restriction, or Extension Access to Out-
going Trunks Any such programming is perfor-
med by dialing digits from the Control Extension
To protect customer data from accidental
change, System Switch SW
2
can
be
used to
disable ProgrammingFunctions.
5.
ELECTRICAL CHARACTERISTICS
5.01
The electrical characteristics of the SX-5
are
listed in Table 5- 1. Refer to Table
5-2
for the SX-5 tone plan
6. SYSTEM OPERATION
6.01
The SX-5 is a solid-state communications
system employing space division switching
and microprocessorcontrol of call processing
A
block diagram of the SX-5 is shown in Fig.
6-
1.
6.02
The microprocessor can access all areas
of the SX-5 either for information or to
change the state of equipment The micro-
processor scans the extensions and trunks, and
controls the connections to the four speech
paths. All extensions and trunks have access to
each of the four speech paths.
6.03
The SX-5 can operate in either a 'Direct
Trunk Select' or 'Trunk Group Operation'
mode. This feature is accessed either via the
System Switch SW 1 or programming. In the
'Direct Trunk Select' mode, a single-digit access
code is dialed for
each
trunk. When operating in
a 'Trunk Group Operation' mode, a single-digit
access code will select
either
idle trunk
6.04
Incoming trunk calls may be identified by
a
ringing pattern that is different from the
ringing pattern of internal calls. Each incoming
trunk
can
also be identifiedby its own distinctive
ringingpattern Therefore, it is possible to distin-
guish between incoming calls on Trunk
1
2nd
Trunk
2,
and internal calls Refer to Section
MlTL9103-098- 105-NA, Features and Services
Description
-
Discriminating Ringing.
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