Manual for OpenStage 15, OpenStage 20, OpenStage 40, OpenStage 60, OpenStage 80

The OpenStage phone acts as an endpoint client on an IP telephony network, requiring an Ethernet connection to a network with SIP clients and servers. It utilizes switches in the LAN for stable operation. Essential components include an Asterisk SIP server, an FTP server for file transfers, and optionally a DHCP server for automatic network configuration and DLS for advanced deployment. The manual details phone assembly, connection procedures, and initial startup steps through various interfaces like Web-based Management (WBM), Deployment Service (DLS), and the Local Phone Menu. Configuration covers network settings, system settings, SIP, features, dialing, and software management. It also includes troubleshooting and examples.