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Knowledge Base > Discontinued Products > TI-101 Telephone Interface

TI-101 Telephone Interface won't hold the phone line open.

It was not designed to. The TI-101 requires a telephone holding coil wired in parallel with the telephone input connections. Use a Microtran T4415. It is a choke rated at 2.0 Henrys @ 60 mA, with a DC resistance of 180 ohms. You will also need to add a switch in series with the holding coil in order to drop the line when you are ready to release the it.

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