Abstract: In one embodiment, an apparatus may include a trunk service unit and at least one logical multimedia terminal adapter (L-MTA). The trunk service unit may be configured to provide session initiation protocol (SIP) service to at least one subscriber equipment in a subscriber network. Each subscriber equipment may have an associated subscriber equipment identifier. The trunk service unit may provide subscriber-facing signaling to communicate with the subscriber network and network-facing signaling to communicate with a stimulus-based network. The L-MTA may be associated with the stimulus based network and may be configured to obtain service from a call management server (CMS) in the stimulus-based network. Each L-MTA may have an associated L-MTA equipment identifier, where the network-facing signaling of the trunk service unit being used to control the at least one L-MTA.

Abstract: In one embodiment, a method includes receiving, at an IP private branch exchange (IP PBX), an event notification message from a user agent corresponding to a voicemail system. The event notification message includes a Request-URI field identifying a Uniform Resource Identifier (URI) of the IP PBX and a header field identifying a target mailbox. The method also includes identifying a URI corresponding to the target mailbox and forwarding the event notification message with a Request-URI field identifying the URI corresponding to the target mailbox.

Abstract: A method of managing Voice over Internet Protocol (VoIP) calls with an Internet Protocol Private Branch Exchange (IP PBX) is provided, including: receiving at an IP PBX device an incoming call directed to a target telephone number, said IP PBX device storing a contact list parameter including one or more rule fields, each rule field including a telephone number identifier and an associated target extension identifier; searching the contact list parameter to identify the telephone number identifier corresponding to the target telephone number; and routing the incoming call to one or more target extensions corresponding to the target extension identifier associated with the identified telephone number identifier.

Abstract: An IP telephone which supports a voice conference call with a plurality of other IP telephones over a packet-switched network is disclosed. The IP telephone exchanges audio and signaling messages with the other IP devices during the conference call, and thereby allows three or more conference call participants to talk together over the packet-switched network. The IP telephone includes a memory, which stores a conferencing module and a channel establishment module, and a mixing module for mixing input signals received at the IP telephone to produce a combined signal output. When played back, the combined signal output to allows the user to hear what was said by the other conference call participants.

Abstract: An electronic device, such as a telephone, includes a key operable to be pressed into a depressed position, said key being associated with a function, and a control system for initiating the function associated with the key, wherein if the key is pressed into the depressed position and released within a timeout period, the control initiates the function upon release of the key, and if the key is pressed into the depressed position and retained in the depressed position for the timeout period, the control system does not initiate the function upon release of the key.

Abstract: An IP telephone which supports a voice conference call with a plurality of other IP telephones over a packet-switched network is disclosed. The IP telephone exchanges audio and signaling messages with the other IP devices during the conference call, and thereby allows three or more conference call participants to talk together over the packet-switched network. The IP telephone includes a memory, which stores a conferencing module and a channel establishment module, and a mixing module for mixing input signals received at the IP telephone to produce a combined signal output. When played back, the combined signal output allows the user to hear what was said by the other conference call participants.