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 Frequently Asked Questions on Multi-line Telephones

General Questions on Multi-line Telephones

I have a RadioShack system telephone which has a product number starting with 36- or 360-; what do I have and what will work with it?
What does Centrex mean?
What does PBX mean?

Questions on Specific Multi-line Telephones

430-0460 System-412 4-Line Telephone System
 -  Are the System-412 and System-411 telephones compatible with each other?
 -  Is there an online user's manual?
430-0461 System-612 4-Line Speakerphone Telephone
 - Is the System-612 Centrix-compatible?
 - Is the System-612 compatible with other telephones?
 - How do I adjust the ringer volume?
 -  Is there an online user's manual?
430-5707 Sprint SP-707 2-Line Telephone with Caller ID & Call Waiting ID
 - How do you set this up after installation and then exit setup?
 -  Is there an online user's manual?
430-6702 Polycom® 2-Line Speakerphone Telephone w/Call ID
 - Is there a support website for this telephone?
 -  Is there an online user's manual?

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