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How can a FLASH be relayed from an FXS port to the PSTN on an FXO port?

April 26, 2017Flash fxo port PSTN relayed

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How can a FLASH be relayed from an FXS port to the PSTN on an FXO port?

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A common application is to accept calls from a PSTN on an FXO port and then ring a telephone connected to a FXS port. In order to send a FLASH out the FXO port to the PSTN, you must disable all supplementary calling features on the FXS interface.