DIN EN 301669:2000-12
Отменен
Fixed Radio Systems - Point-to-point equipment - High capacity digital radio systems carrying STM-4 in two 40 MHz channels or 2 x STM-1 in a 40 MHz channel with alternate channel arrangement (Endorsement of the English version EN 301669 V 1.1.1 (2000-06) as German standard)
