... Supergroup - 5 groups multiplexed together (5x48 kHz = 240 kHz Bandwidth) • Mastergroup - 10 supergroups multiplexed together (10x240 kHz = 2400 kHz Bandwidth) • Other standards also exists - up ... Circuit Voice Channels Speed(bits/second) Equivalent T-1 Circuit T-1 24 1,544,000 1 T-2 48 6,312,000 4 T-3 672 44,376,000 28 T-4 4,032 274,176,000 168 Lecture28.doc Page 4 (7) CSN200 ... maintenance and is less flexible than TDM. • The FDM schemes used around the world are to some degree standardized. • Group - 12 voice channels multiplexed together (12x4 kHz = 48 kHz Bandwidth)...