An engineer wants to add a domain to a numeric E.164 alias dialed by an H.323 endpoint. Which opinion is the Cisco recommended method to add this domain in the Expressway configurations?
= Transforms are a way of modifying the destination alias or address of a call before it is routed to the appropriate zone or service. Transforms can be applied at different stages of the call routing process, such as pre-search, search rules, or call policy. The Cisco recommended method to add a domain to a numeric E.164 alias dialed by an H.323 endpoint is to use a pre-search transform. A pre-search transform is applied to the destination alias before any searches are sent to external zones. This allows the Expressway to standardize the destination aliases originating from both H.323 and SIP devices. For example, if the called address is an H.323 E.164 alias “01234”, the Expressway can automatically append the configured domain name (in this case example.com) to the called address (that is, 01234@example.com making it into a URI), before attempting to set up the call. This way, the Expressway can route the call to the correct destination zone or service based on the full URI. References := Cisco Expressway-E and Expressway-C Basic Configuration Deployment Guide (X14.0) - Routing ConfigurationCisco Expressway Administrator Guide (X14.0) - Dial Plan and Call Processing
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