You support a Microsoft Lync Server 2013 environment. The network includes: - An Enterprise Edition Front End Pool with two Front End Servers, - A mediation server that is collocated on the Front…

You support a Microsoft Lync Server 2013 environment. The network includes:

• An Enterprise Edition Front End Pool with two Front End Servers,
• A mediation server that is collocated on the Front End Server, and
• A media gateway with 4 Tl trunks for public switched telephone

network (PSTN) connectivity. Users report intermittent outbound PSTN call failures. There are no issues with inbound PSTN calls. You view the event log information as shown in the exhibit. (Click the Exhibit button.) You need to find out why outbound calls are failing. Which two event IDs should you investigate? (Each correct answer presents a complete solution. Choose two.)