If I use a 128K leased line, can I say it should have around 128/8*(1.5M)=24M bandwidth (my calculation is based on 128K equivalent to 8 voice line and each line can carry 1.5M ADSL modem bandwidth) that is sufficient for email and file transfer. Please advise whether my argument is valid.
I do not agree with you argument because I don't have enough information from you to determine where the numbers are coming from. A 128K Leased Frame Relay network with 128K PVC's will give you bandwidth capabilities of 128K.
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