Concepts

This topic gives the conceptual information for telephony server plug-ins.

• Telephony Server Plug-ins (TSY)
  A TSY is an interface between Symbian platform and the modem. This topic describes the telephony server plug-ins and the main function they provide to the licensees.
• Common TSY
  The Common TSY (CTSY) is the platform-independent part of a TSY supplied by Symbian. The CTSY provides a generic interface for the licensees to implement in the Licensee TSY. This section describes the CTSY of the telephony server plug-in.
• Dispatch Layer
  This topic describes the dispatch layer of the Common TSY.
• Licensee TSY
  A Licensee TSY (LTSY) is the platform-dependent part of a TSY. Licensees develop a LTSY to adapt the modem to Symbian platform. The LTSY should implement the functionality provided by the Common TSY (CTSY). This topic describes the Licensee TSY of the telephony server plug-ins.
• Architecture
  The telephony server plug-in is the interface between the telephony server and the baseband. This topic describes the architectural relationship between the telephony server plug-in components.