300-820 · Question #176
In which mode does the Cisco Expressway act as a SIP-H.323 gateway only if one or more of the endpoints are locally registered?
The correct answer is A. registered only. In 'Registered Only' mode, Cisco Expressway acts as a SIP-H.323 interworking gateway only when at least one of the two endpoints involved is locally registered to that Expressway.
Question
In which mode does the Cisco Expressway act as a SIP-H.323 gateway only if one or more of the endpoints are locally registered?
Options
- Aregistered only
- Bgateway only
- Coff
- Don
How the community answered
(67 responses)- A90% (60)
- B6% (4)
- C3% (2)
- D1% (1)
Why each option
In 'Registered Only' mode, Cisco Expressway acts as a SIP-H.323 interworking gateway only when at least one of the two endpoints involved is locally registered to that Expressway.
The 'Registered Only' interworking mode restricts gateway functionality so that Expressway will perform SIP-to-H.323 protocol translation only if one or more participants in the call are registered directly to that Expressway system, preventing it from being used as an open interworking gateway for unrelated traffic.
Gateway Only mode means Expressway always acts as an interworking gateway regardless of endpoint registration status, which is the opposite of the described behavior.
Off mode disables interworking entirely, so no SIP-H.323 translation occurs under any condition.
On mode enables interworking for all calls passing through Expressway regardless of whether either endpoint is locally registered.
Concept tested: Expressway SIP-H.323 interworking mode - registered only
Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/admin_guide/X14-3/exwy_b_cisco-expressway-administrator-guide/exwy_m_interworking-and-calls.html
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