STS-12 - What does STS-12 stand for? The Free Dictionary
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A 622 Mbit/s serial interface is also provided as the main STS-12
input and a duplicate serial input is also included to support both 1:1 and 1+1 automatic protection switching.
In addition, the DS3/E3 monitors are located between the demapper and the DS3/E3 transmit framer to provide performance monitoring of the demapped DS3/E3 frames from the STS-12
SONET framer block.
The S/UNI-12xJET integrates 12 DS3/E3 mappers/framers, with corresponding desynchronizers and a STS-12
SONET/SDH framer, to support DS3/E3 mapping into SONET/SDH on a channel-by-channel basis.
Fairchild's high-speed repeaters operate at greater than 800 Mbps, allowing interfacing to STS-1, STS-3, and STS-12