Cell2Jack

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  • Audio is bad. How to fix it?
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  • Share Cell2Jack with two cell phones
  • No dial tone
  • Second
  • ​How to use cellphone answer call while it is paired to Cell2Jack
  • no-ring-fix
  • VOIP app compatibility
  • Factory Reset
  • answer
  • FCC,CE,RoHs certifiation
  • video
  • dialing issue
  • wall_phone_socket
  • flip
  • RotaryPhone
  • update4_mac
  • setting
  • update4
  • return
  • senior
  • Return & Refund Policy
  • Contact US
  • commands
  • How to repair Cell2Jack to a new cellphone
  • Audio
  • echo
  • google store
  • manual
  • ringing issue
  • instock
  • The billing Terms & Condition
  • Utility
  • DTMF
  • Buyshopify
  • BuyNew
  • USB
  • Call drop
  • landline number porting
  • power
  • Home
  • Setup
  • buy
  • FAQ
  • Contacts/support
  • Features
  • Tips
  • User Review
  • Privacy Policy
  • Bluetooth pairing
  • make call
  • assistant
  • 5V
  • Audio is bad. How to fix it?
  • CallerID
  • Share Cell2Jack with two cell phones
  • No dial tone
  • Second
  • ​How to use cellphone answer call while it is paired to Cell2Jack
  • no-ring-fix
  • VOIP app compatibility
  • Factory Reset
  • answer
  • FCC,CE,RoHs certifiation
  • video
  • dialing issue
  • wall_phone_socket
  • flip
  • RotaryPhone
  • update4_mac
  • setting
  • update4
  • return
  • senior
  • Return & Refund Policy
  • Contact US
  • commands
  • How to repair Cell2Jack to a new cellphone
  • Audio
  • echo
  • google store
  • manual
  • ringing issue
  • instock
  • The billing Terms & Condition
  • Utility
  • DTMF
  • Buyshopify
  • BuyNew
  • USB
  • Call drop
  • landline number porting
  • power

Cell2Jack Firmware update for Ver 4.0 (or higher) hardware for Rotary Phone

 * For Rotary phone, make sure you have ver 4.0 or higher hardware.
* For pairing, after power up, cell2jack will automatic start pairing within 2 min (don't need press #*#)
* Make sure your hardware is ver 4.0 or higher. (The version is printed on the back of cell2jack).
* Click here to update your firmware

* Some of old Rotary may require you to adjust bias sprint position in order to ring. 
 Below is the picture for the "bias sprint" location. Your phone may look different.
 The original web document is listed below for your information.
​https://www.sandman.com/knowledgebase/ring-voltage-tech-bulletin


Picture
Picture
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