4.1 Configure Voice Gateway and Session Border Controller Elements for On-Premises and Cloud Calling 350-801 Practice Questions (Page 6)

Questions 26–27

1. 26expert · hard

   A voice gateway routes calls to two different SIP trunks. Trunk A supports G.711 and G.729, but prefers G.711. Trunk B only supports G.729. You need to ensure that calls to Trunk A use G.711 when possible, and calls to Trunk B use G.729. What should you configure?

   • ASet the codec to G.711 on Trunk A's dial peer and G.729 on Trunk B's dial peer.
   • BCreate two codec preference lists: one with G.711 first and G.729 second for Trunk A, and one with only G.729 for Trunk B. Apply each to the respective VoIP dial peer.
   • CUse the 'voice-class codec' command to set the codec globally.
   • DCreate a single codec preference list with G.711 first and G.729 second, and apply it to both dial peers.
   Reveal Solution Discussion Select an answer first
2. 27application · medium

   A company's voice gateway needs to route calls to a SIP service provider that uses multiple redundant servers. The provider's server IP addresses may change, and they want the gateway to automatically discover available servers. What should you configure on the voice gateway?

   • AConfigure a server group with the provider's current IP addresses and use options keepalive.
   • BUse a static route to the provider's network and rely on the provider to handle redundancy.
   • CSet the session target to a DNS SRV record that resolves to the provider's servers.
   • DCreate multiple VoIP dial peers, each with a different destination pattern and a session target of a specific server.
   Reveal Solution Discussion Select an answer first