How does one program the Mitel SX-20 to deactivate trunk line 3? We have 4 trunk lines and we cancelled trunk line 3 with the phone company. The SX-20 still attempts trunk line 3 and alarms out when doing this. I need to program the SX-20 to use only trunk lines 1 2 and 4. Any suggestions will be greatly appreciated.
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Mitel SX-20: Need to deactivate trunk 3. Line for trunk 3 cancelled
- Thread starter lgphone
- Start date
