ETSI EN 300 430
ETSI EN 300 430
Transmission and Multiplexing (TM); Digital Radio Relay Systems (DRRS); High capacity DRRS carrying 1 x Synchronous Transport Module-1 (1 x STM-1) signals operating in the 18 GHz frequency band with channel spacing of 55 MHz
standard published 02/01/1999 by European Telecommunications Standards Institute