Your company corporate telephony environment is a combination of Lync 2013 and traditional Private Branch Exchange (PBX). The company has three sites that are connected by a Multiprotocol Label Switching (MPLS) topology. There are 1,250 users who are using Lync 2013 and 2,250 users who are using the PBX environment. On average, the company has 3 percent of its users dialing in for conferences and 6 percent on a public switched telephone network (PSTN) call at any time.
The company plans to remove the PBXs and have all users use only Lync 2013. You need to generate a usage model based on the existing data usage and real-time communications through all of the PBXs.
Which two pieces of information should you collect when you performing usage modeling? (Each correct answer presents part of the solution. Choose two.)
A. number of peer-to-peer (P2P) calls over the MPLS network
B. number of calls that use RTAudio Wideband
C. number of intersite calls through PSTN
D. number of PSTN channels provisioned
E. number of calls that use G.722
