Go back to 642-278 - Implementing CUCM for TelePresence Video Solutions Exam

Question :-

Which of the following accurately describes DTMF OOB signaling?
SIP phones use either RFC 2833 or KPML
SIP phones cannot use OOB
SIP trunk, are always sent DTMF In band
SCCP and SIP phones both use KPML
SIP trunks use KPML exclusively

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