Cell2Jack

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  • 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
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  • video
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  • 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 and parameters setting for Ver 4.0 (or higher) hardware

Please download below Windows PC utility to debug your issue.

c2j_utility_625_beta1.exe
File Size: 4326 kb
File Type: exe
Download File


​Debug version for rings once issue.
The "hook detection speed" is double (default is 200ms: label at 100ms)

1. click "Debug Trace" to enable the trace. 
2. Begin to make the call with connected analog phone (start an incoming call to ring your analog phone). 
3. After the call is connected or it failed to make the call, click on "OK" on the pop-up Window to stop the debug trace.
The trace file "Cell2Jack.trace" will be on the same directory as the application. 

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