What is the interface type that you should use to connect a PSTN analog line to the VoIP network?
A. FXS
B. FXO
C. E and M
D. Serial
What is the interface type that you should use to connect a PSTN analog line to the VoIP network?
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What is the interface type that you should use to connect a PSTN analog line to the VoIP network?
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