For Cortelco 1211 (with caller ID display): Page 8 of manual
For Cortelco model Colleague (without ID display): Page 8 to 9 of manual
Programming Cortelco Keys
Last modified April 11, 2023
For Cortelco 1211 (with caller ID display): Page 8 of manual
For Cortelco model Colleague (without ID display): Page 8 to 9 of manual
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