* 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 ring. Please see more information in below link
https://www.beatriceco.com/bti/porticus/bell/images/bells/strong_bias_pos.jpg
https://www.sandman.com/knowledgebase/ring-voltage-tech-bulletin
* 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 ring. Please see more information in below link
https://www.beatriceco.com/bti/porticus/bell/images/bells/strong_bias_pos.jpg
https://www.sandman.com/knowledgebase/ring-voltage-tech-bulletin
