- In the United States, they
are required by FCC regulations when attaching customer
equipment to a telephone or carriers circuit.
- Provide the conversion of
standard data interfaces such as RS-232, V.35, RS-422, RS-530,
X.21 to standard T3, E3, T1, E1, Fractional, 64k, 56k or DDS
circuits.
- Provide data integrity and
testing capabilities such as loop back testing and additional
repeater function for extended distance.
- Allow data, voice, and video
integration.
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- Provide data manipulation and
timeslot assignment for extended capabilities.
- Provide drop and insert
capabilities to extend functionality of an existing circuit.
- Allow the connection of
devices like Routers, Multiplexers, CTI, Video and many other
popular products to telephone company data circuits.
- Allow additional monitoring
capabilities for network management applications.
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