Block incoming collect calls on DGM-TE220B E1

Discussion in 'General' started by cassioac, May 4, 2010.

  1. cassioac

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    Could anybody tell me how to block incoming collect calls on my ISDN E1 (DGM-TE220B)?

    If there's a way I can answer the phone, hangup, and answer again, it would solve my problem.

    Thank you in advance.
     

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