Implementing Cisco Advanced Call Control and Mobility Services (CLACCM) — Question 14

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.)

Answer options

• A. three-way conference
• B. secure SIP lines
• C. T.38 fax relay
• D. transcoding
• E. SIP trunk

Correct answer: A, C

Explanation

The correct answers, A and C, indicate that three-way conferencing and T.38 fax relay are supported features in an IPv6 fallback situation for SIP phones. Options B, D, and E are not supported supplementary features for this scenario, making them incorrect choices.