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210-060 · Question #228
210-060 Question #228: Real Exam Question with Answer & Explanation
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Question
Which two explanations of DTMF dialing are true? (Choose two.)
Options
- ADTMF dialing consists of simultaneous voice-band tones generated when a button is pressed on
- BThe use of DTMF enables support for advanced telephony services.
- CDTMF dialing uses INVITE messages to signal when the first digit is pressed in a new call.
- DDTMF dialing consists of a simultaneous digital-band pulse generated when a button is pressed
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