Applications; Spread Spectrum - ADTRAN TRACER User Manual

P 2
AGE
S 1
ECTION
A
PPLICATIONS
Any application that would typically use metallic T1 as a transport
can use the Tracer instead. The figure below illustrates a typical
application.
TRACER
Baseband Processor
VT-100
RS-232
Terminal
Switch
2xT1, Mast-mounted RFC
Mast and Rack mount RFCs may be mixed to accommodate individual system requirements.
The Tracer can be used in any application requiring that data be
shared at a high rate of speed. In addition to telephony
applications, Tracer can be used in data communications such as
inter-networking, video conferencing, and telemetry.
S S
PREAD PECTRUM
Spread spectrum is a form of communication in which the
bandwidth of a message signal is intentionally increased or
"spread." The FCC rules allow two methods of spreading --
frequency hopping and direct sequence. Tracer employs direct
sequence spread spectrum.
Antenna
RF Cable
Mast Unit
IF Cable
T1
T1
MSC
61280.003L1-1B
Antenna
RF Cable
TRACER
Baseband Processor
T1
T1
Cell Radio
Cellular/PCS Site
2xT1, Rack-mounted RFC
Figure 1-1. Typical Application
Rack-mount RFC
4/12/99