I have to change ex numbers from 2 to 3 dig or 4 dig do I have to reprogram system from scratch like a new install or can you change ex and retain data for key system and vmail.
Can you change ex numbers from 2 dig to 3 dig or 4 and do you have to reprogram from scratch. also the vmail ex do you have to reprogram or will it move to the new ex number and not lose any data base like names ect... t ks
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