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Two-line VCO allows a deaf or hard-of-hearing person with two telephone lines to use one line for speaking directly to a hearing person while the second line is used to received the hearing person's typed responses. This feature provides a more natural flow of conversation without the pauses of single-line calls. The voice line must have conference/ three-way calling capability. Contact your phone company for adding the three-way calling service.
If you have three-way calling feature:
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