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  1. Manuals
  2. Brands
  3. Cortelco Manuals
  4. Telephone
  5. 2740
  6. Quick start manual

Cortelco 2740 Quick Start Manual page 2

4 line telephone system
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[ FOR CORRECT FUNCTION, LINE 1 MUST BE LINE 1 ON ALL STATIONS AND IT MUST NOT
HAVE LINE FILTERS INSTALLED. THIS MEANS THAT LINE 1 CANNOT BE A DSL OR VOIP
LINE].

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