I have a Mitel SX-50 system.

I need to change the room # in the system.
currently, the room# sequnce is in 2 digit, I need to change it to 3 digit.

I need help in changing this.

changing the sx50 numbering plan from 2 digit to 3 digit should be done by a qualified tech, It is not any easy taske.

I have done this over the phone using the desk clerks fingers and eyes, lots of possibilities for REAL problems, even if it seems to be OK after it's done. Takes a lot of testing to eliminate problems. John C.

command 301 310 be carefull read up if you can very dangerous in there