The lines have been restricted in the phone system for some reason that might not be needed anymore. Check with your Phone System Administrator. A system vendor can make these changes or an administrator with programming knowledge.
SOURCE: M7310 has lines 1 & 2 restricted to local calls only...HELP
Sounds like a 6x16 system, if you open it up, can you see on the right hand side 6 ports for your telephone trunks?
Ok... depending on the software level... enter the programming of the system, via **266344 and password 266344 (these are default passwords: might not be your passwords?)
Ok, once in you will see: TERMINALS&SETS (this is where your template to maneuver will come in handy) hit enter, and type in the sets that you want to change (ex 24) --> Look for RESTRICTIONS hit enter --> look for SET RESTRNS --> FILTERS --> change Normal to 2 and Night to 2 and Evening to 2 so on and so on.
This is the default to give no outside restrictions for your sets.
SOURCE: I have 4 lines that were made into speed dial numb...
You call your Nortel service tech, unless you know the installer password and are familiar with programming. You have to go back into set programming and reassign the lines.
Call a tech in that handles the system programming to check the line port if ok and/or call your carrier to report the line as being dead.
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