That is great. I have often had to tell sales people that yes, the switch can handle the calls on the lines, but how can the switch make it roll over if the telco does not allow it into the switch in the first place?
After a few times they seem to remember something about a switch not really being able to rollover incoming telco by itself. Sometimes it's fun just to be condescending to sale people when you have a little free time.

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