Clients wishing to use the ETel Server must first open a connection to a root server session. The root session provides access to general information and functionality about the available telephony resources. The interface provides functions that allow clients to:
load and unload TSY modules
list the number of phones that are supported by the loaded TSY modules
obtain information about the phones in the loaded TSY modules
close an open root session
To access functionality associated with a specific phone, line, or call, the client must open a sub-session through an object of the associated class.