Cell2Jack supports Google Voice/Hangout to provide FREE unlimited local and long distance phone call using your old landline home phone.
You need to download Cell2Jack's Android APP (hangout helper) and use any cellphone with Android 7.0+  (No sim card required).
Please download "hangout helper BETA" from
www.cell2jack.com/hangout4  (for ver 4 and up hardware)
www.cell2jack.com/hangout2 (for ver 2 or below hardware)

and follow below video to setup.

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