P
AGE
2
44022-00-0898 <90-00023>
ORDERING INFORMATION
GENERAL DESCRIPTION
T
he 44022 Subscriber Line Interface Module (44022)
interfaces a subscriber telephone to a four-wire port. The
44022 also provides group or all-call capability for the Dantel
00330 DTSS3A Selective Signaling Order-Wire Terminal.
The 44022 comes with with two model options, the 44022-00 and
the 44022-10. This practice covers only the 44022-00. The
44022-10 is covered in a separate practice. The 44022-00 is
recommended for applications that do not require an external
ringing generator. The 44022-10 should be used in all applica-
tions requiring an external ringing generator.
The 44022 is a plug-in printed circuit module that fits into any
400-type or similar equipment housing. The 44022 does not
accept subassemblies.
The front panel includes:
♦
Operational status indicating LEDs
♦
Calibration test points
♦
Test jacks
♦
Level controls
♦
A test/reset switch
The 44022 operates on -21 to -56 VDC input power.
CIRCUIT DESCRIPTION
T
he Decoder Module circuitry consists of three sections:
audio, signaling/control and power regulator. Fig. 1 shows the
44022 Subscriber Line Interface Module audio section functional
schematic. Fig. 2 shows the 44022 Subscriber Line Interface
Module signaling/control section functional schematic.
NOTE:
This section lists the different options available for this product. To order any of the avail-
able options, contact Dantel Inside Sales through our toll-free number,
1-800-432-6835.
OPTION NUMBER
FEATURES
B11-44022-00
Subscriber Line Interface
A11-44022-10
Subscriber Line Interface