A remote terminal for a telephone company services 300 VF su

A remote terminal for a telephone company services 300 VF subscribers and 150 G. Lite DSL subscribers (1.5 Mb/s data plus a VF signal that is converted to a DS-0 signal). Compute the minimum data rate needed for the receive fiber-optic line that terminates at the RT from the CO.

Solution

DS-0 signal data rate = 64 kbits per second

So a single G.Lite subscriber data rate = 1.5Mb/s +64kb/s = 1.564Mb/s

For 150 subscribers R_g = 150*1.564Mb/s = 234.6 Mb/s

For 300 VF subscribers R_v = 300*64 kb/s = 19.2Mb/s

So the minimum data rate needed = 234.6 + 19.2 = 253.8 Mb/s