The Avaya Aura® core setup is in the head office, Location 1. The head office connects to Location 2, a branch office, which is the parts warehouse. Location 2 requires a new setup for 150 users. Location 2 uses SIP endpoints. The network environment uses POE. The communication system requires a 30–channel ISDN PRI trunk for inbound and outbound calling. The branch office connects over WAN to the head office.