In 2005, New Rock started to launch FXO port devices. After hundreds of versions and 12 years of persistent improvement and optimization, the following features of the FXO port of New Rock are recognized by the industry and the public

1.Provide a relatively wide range of ringing detection frequency and amplitude to prevent leakage and misjudgment
2.Provide reliable reverse polarity detection and comprehensive busy tone detection mode
3.Provide caller ID adaptive solution
4.Provide connection detection to quickly eliminate FXO port wiring problems
5.Provide power failure escape and network failure escape to ensure voice reliability

Nowadays, under the historical trend of optical in-copper out IMS access and voice cloud solution, FXO port still has value with its high reliability.

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