Call processing system and method based on dual mode terminal
OwnerChae-Ho Ko, Soon-Phil Leeinventors
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Abstract
A call processing system and method are based on a dual mode terminal. The call processing system comprises: a Private Branch Exchange (PBX) which, when a call is incoming to an extension through a first network, checks registration information based on a link test message transmitted periodically from a destination terminal having a number of the extension to which the call is incoming, and processes the incoming call in real time; and a dual mode terminal which is interconnected to an extension of the PBX, operates in at least one of a Wireless Local Area Network (WLAN) mode and a wireless communication mode, and processes the incoming call.
Claims20
A call processing system, comprising:
- a Private Branch Exchange (PBX) which, when a call is incoming to an extension of the PBX through a first network, checks registration information based on a link test message transmitted periodically from a destination terminal having an extension number of the extension to which the call is incoming, and processes the incoming call in real time;
- and
- a dual mode terminal which is interconnected to the extension of the PBX, operates in at least one of a wireless local area network (WLAN) mode and a wireless communication mode, and processes the incoming call.
A Private Branch Exchange (PBX), comprising:
- an extension/central office number match database for storing at least one of an extension number of at least one dual mode terminal registered as an extension, a central office number matched to the extension number, and information on an extension/central-office-line call processing state;
- and
- a call processing control module for checking the information on the extension/central-office-line call processing state based on a link test message periodically transmitted from a destination terminal having an extension number of an incoming call, and for connecting the incoming call to one of an extension and a central office line of a corresponding terminal in real time.
A dual mode terminal, comprising:
- a Wireless Local Area Network (WLAN) processing module operating in a WLAN mode to process an incoming call when located within a WLAN service area of a Private Branch Exchange (PBX);
- and
- a wireless communication module operating in a wireless communication mode to process the incoming call when located outside of the WLAN service area of the PBX.
A call processing method, comprising the steps of:
- when a call is incoming to an extension, checking registration information of a corresponding terminal based on a link test message transmitted periodically;
- and
- connecting the incoming call to an extension number when the corresponding terminal is registered, and forwarding the incoming call to a central office number matched to the extension number when the corresponding terminal is not registered.
Dependencies are inferred from the claim text.