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ASYMMETRIC DIGITAL SUBSCRIBER LINE, 8 MBIT/S DOWN, 1.0 MBIT/S UP
DS1DIGITAL SIGNAL 1 (=T1), 24 DS0 CHANNELS
DS3DIGITAL SIGNAL LEVEL 3 T-CARRIER (ALSO CALLED T3) = 28 DS1 CHANNELS
DSLAMDIGITAL SUBSCRIBER LINE ACCESS MULTIPLEXER
IMAINVERSE MULTIPLEXING OVER ATM
MTAMETALLIC TEST APPLICATION
OC-12OPTICAL CARRIER LEVEL 12 UP TO 622MBIT/S, SONET EQUIVALENT TO SDH STM-4
OC-3OPTICAL CARRIER LEVEL 3 UP TO 155MBIT/S, SONET EQUIVALENT TO SDH STM-1
POTSPLAIN OLD TELEPHONE SERVICE
STM-1SYNCHRONOUS TRANSPORT MODULE LEVEL 1, BASIC UNIT OF FRAMING IN SDH