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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After configuring a Cisco CallManager Express with Cisco Unity Express, inbound calls from the PSTN SIP trunk receive a ring tone for 20 seconds and then a busy signal instead of voicemail. Which configuration fixes this problem?

• A.Router(config)# voice service voip
  Router(conf-voi-serv)#allow-connections h323 to h323
• B.Router(config)#dial-peer voice 2 voip
  Router(config-dial-peer)#no vad
• C.Router(config)# voice service voip
  Router(conf-voi-serv)#allow-connections voice-mail mod
• D.Router(config)# voice service voip
  Router(conf-voi-serv)#no supplementary-service sip moved-temporarily

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An engineer must route all SIP calls in the form of <user>@example.com to the SIP trunk gateway corporate local. Which two SIP route patterns can be used to accomplish this task? (Choose two.)

• A.[email protected]
• B.*@example.com
• C.gateway.corporate.local
• D.example.com
• E.*.*

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Which two descriptions of the Standard Local Route Group deployment are true? (Choose two.)

• A.can be associated under the route group
• B.chooses the route group that is configured under the device pool of the calling-party device
• C.chooses the route group that is configured under the device pool of the called-party device
• D.can be associated only under the route list
• E.can be assigned directly to the route pattern

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Which description of RTP timestamps or sequence numbers is true?

• A.The sequence number is used to detect losses.
• B.Timestamps increase by the time "carrying" by a packet.
• C.Sequence numbers increase by four for each RTP packet transmitted.
• D.The timestamp is used to place the incoming audio and video packets in the correct timing order (playout delay compensation).

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