Enable H.323 and SIP Communication with External Parties
Question
A company is installing Cisco Collaboration infrastructure and one of the requirements is that they must be able to communicate with many external parties that are using H.323 and SIP.
Internally they want to register the endpoints only on SIP.
Which functionality would describe the feature that needs to be enabled and where to achieve this?
Answers
Explanations
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A. B. C. D.B.
The scenario presented involves a company that wants to set up a Cisco Collaboration infrastructure to allow communication with external parties using H.323 and SIP protocols, while internally they only want to register endpoints on SIP. To achieve this, the company needs to enable a specific feature that can facilitate the communication between these protocols.
Option A: Interworking in Expressway-C Expressway-C is a component of the Cisco Expressway product, which is used to provide secure access for mobile, remote, and home workers to the company's Collaboration infrastructure. Interworking is a feature of Expressway-C that enables translation between different protocols and codecs. It allows H.323 endpoints to communicate with SIP endpoints by converting the signaling and media streams between the two protocols. Therefore, this option is a possible solution to the company's requirement.
Option B: Transcoding in Cisco Unified Communications Manager Cisco Unified Communications Manager (CUCM) is a call control solution that manages the signaling and media streams between endpoints. Transcoding is a feature of CUCM that can convert media streams between different codecs, enabling communication between endpoints using different codecs. However, it does not support interworking between different protocols. Therefore, this option is not a suitable solution for the company's requirement.
Option C: Transcoding in Expressway-C Expressway-C also supports transcoding, which can be used to convert media streams between different codecs. However, as with CUCM, it does not provide interworking between different protocols. Therefore, this option is also not a suitable solution for the company's requirement.
Option D: Interworking in Cisco Unified Communications Manager This option proposes using interworking in CUCM to enable communication between H.323 and SIP endpoints. However, CUCM does not support interworking between these protocols. Therefore, this option is also not a suitable solution for the company's requirement.
Conclusion: Option A, Interworking in Expressway-C, is the correct solution to the company's requirement, as it enables translation between different protocols and codecs. Therefore, the company can set up their infrastructure to register endpoints only on SIP while still being able to communicate with external parties using H.323 and SIP.
