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Refer to the exhibit. Which option describes the method used by Cisco IOS gateways to tunnel QSIG signaling messages in
Correct Answer: D
Explanation/Reference: Explanation: H.323 is an umbrella recommendation that encompasses various ITU-T recommendations, primarily recommendations H.225.0 and H.245 (basic communication capabilities) and recommendation H.450.1 (generic functional protocol for the support of supplementary services). Tunneling QSIG over H.323 is specified in H.323 Annex-M1. However, Cisco IOS ® Software H.323 QSIG tunneling does not implement Annex-M1 (as the Cisco Unified Communications Manager H.323 implementation does).Instead it uses the ISDN Generic Transparency Descriptor (GTD) to transport QSIG messages in 96 / 162 The safer , easier way to help you pass any IT exams. the corresponding H.225 message to another Cisco gateway device on the other side of the network. Explanation: http://www.cisco.com/c/en/us/solutions/collateral/enterprise-networks/empoweredbranch-solution/white_ paper_c11_459092.html