I have VM 4.0 which I will make upgrade to 4.1 Also, I would like to change the number of DN to pass from 3 to 4. Which is the procedure for change this DN ?
You'll have to reset the NAM, shut the NAM down, change the DN length on the phone system to 4, power up the NAM, then configure the NAM and redo all your programming. Brian Cox
J & J Communications
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