SmartSMS User Manual
Soft dB inc.
User Manual
p. 83
8.2 Input Signal Specification
Each input can accept a 0 – 5 Volt signal. Standard audio lines (TEL/LINE: -20 dB Low Z) are thus
directly accepted.
Connection to the Telephone System
General Paging
For general (or one zone) paging, only one (1) line must be provided : the signal associated with all
phone numbers. This signal is usually connected to Auxi. Input #1.
Most telephone systems used in commercial buildings (Norstar, Panasonic, Toshiba, NEC, Avaya)
have at least one (1) paging output signal (line level output) as part of their basic equipment. The
telephone system supplier for the building can thus easily provide this paging line level signal.
Multi-Zone Paging
For a multi-zone paging system, the number of zones desired will define the number of independent
lines that must be supplied to the inputs of the SmartSMS unit(s).
Telephone system suppliers can provide these paging signals using devices adapted to their
telephone system. Some examples of telephone interface equipment available for multi-zone
paging are:
1) V-2003A, from Valcom (
www.valcom.com
)
2) ZPM3, & UTI312 Zone Paging module from Bogen (
www.bogen.com
)
3) ZPI-4, 4 zone paging interface from Viking (
www.vikingelectronics.com
)
4) NTL808, from Norelco (www.norelcotele.com)
The price of these devices starts around US$300 for three-zone controllers.
Note that a single zone telephone/paging interface is also available (ex. V9941A from Valcom) if
needed (for example, if the telephone equipment does not have an output for paging).
