What are two functions of Cisco Expr

多选题 What are two functions of Cisco Expressway in the Collaboration Edge? (Choose two.)

A、 Expressway-C provides encryption (or Mobile and Remote Access but not (or business-to-business communications.

B、 The Expressway-C and Expressway-E pair can enable connectivity from the corporate network to the PSTN via a T1/E1 trunk.

C、 The Expressway-C and Expressway-E pair can interconnect H.323-to-SIP calls for voice.

D、 Expressway-E provides a VPN entry point for Cisco IP phones with a Cisco AnyConnect client using authentication based on certificates.

E、 Expressway-E provides a perimeter network that separates the enterprise network from the Internet.

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C、IM and Presence subclusters (configured on Cisco Unified IM and Presence)

D、Presence Redundancy Groups (configured on Cisco UCM)

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D、_cisco-uds._tls.example.com

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A、G711alaw

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B、The certificates on the SIP phone are not trusted by the Cisco UCM. The SIP phone must generate new certificates.

C、DNS lookup for the Cisco UCM FQDN is failing. The SIP phone must be reconfigured with the proper DNS server.

D、An network device is blocking TCP port 5060 from the SIP phone to the Cisco UCM. This device must be reconfigured to allow traffic from the IP phone.

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B、config t 2900(config)#isdn switch-type primary-ni 2900(config)#controller e1 0/0/0 2900(config-controller)#pri-timeslots 1-7

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B、Configure DTMF for KPML.

C、Configure CODEC for G.722.

D、Configure DTMF for RFC 2833.

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