P
AGE
2
44210/49210-0798 <90-00025>
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
B11-44210-00
Dial-up Modem
A12-49210-00
Two-line Interface Subassembly
ORDERING INFORMATION
GENERAL DESCRIPTION
T
he 44210 module provides single-line, dial-up modem service
between components of Dantel's 460 Alarm and Control
System (460 ACS). It also provides 212A-type digital interface
for transmitting and receiving data between data sources that
are remotely located. The optional 49210 subassembly provides
an interface to two telephone lines; a primary and a backup.
The 44210 is a plug-in module that fits into any 400-type or
similiar equipment housing. The front panel has status-indicat-
ing LEDs, normal-through and monitoring jacks, test points,
level-setting potentiometers, and a subassembly cutout window.
The optional 49210 subassembly has front panel LEDs which
are visible through the cutout window when installed on the
44210 and a board-mounted line-select switch.
CIRCUIT DESCRIPTION
T
he 44210 460 Modem Module and 49210 Two-Line Interface
Subassembly functional schematics are shown in Fig. 1.
44210 M
ODULE
The 44210 460 Modem module consists of a microprocessor, an
8K EPROM (Erasable/Programmable Read Only Memory), a
128-byte EEPROM (Electrically Erasable/Programmable Re-
ceiver/Transmitter), modem and controller ICs, UARTs (Univer-
