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Question 23 - 300-815 discussion
A company has an SRST gateway running an IOS XE image. The company plans to enable the IPv6 addressing companywide. To enable the IPv6 in a unified SRST gateway to support SIP phones, what are two supported supplementary features for an IPv6 fallback scenario? (Choose two.)
A.
three-way conference
B.
secure SIP lines
C.
T.38 fax relay
D.
transcoding
E.
SIP trunk
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