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Carriers Differ in the way they charge.

If you are charged in a 1 Second Block then you will pay a prorated rate for the last few seconds of your call.

if your carrier charges you in 30 second block then you pay the full rate even if you only use 1 second of the last 30 Second block

lets say the destination you call has a call rate of 60 cents per minute and the call duration is 35 Seconds

for the 1 second block you will be charged: 35 cents

the carrier with the 30 Second block will charge you: 60 Cents

since you already started to use the next block.

so the 30 second block is undesirable

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16y ago

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