Norstar Key Service Units offer a full suite of different sizes to accommodate all small- and medium-sized businesses. Although discontinued in 1995 and replaced by the Norstar MICS, Norstar KSUs are still a good choice for cost-conscience businesses or for replacing a defunct unit.

Each KSU is distinguished by the number of lines it supports by the number stations, e.g. a 308 KSU natively supports 3 lines and 8 stations.

Norstar Key Service Units (308, 616, 824)

308 KSU (3x8)
616 KSU (6x16)
824 KSU (8x24)
Copper Expansion Modules (12x0, 0x16)
Copper Trunk and Expansion Cartridges
KSU (308, 616, 824) Accessories