Technically, if you have a T1, you have 1.5Mb up and 1.5Mb down. If you're seeing rxload 255/255, that means you're router is receiving 100% of it's capacity inbound only (1.5Mb). You would still have 100% available to transmit outbound for 1.5Mb. (In your example of txload 1/255)

HTH,
John

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