Abstract: A Multiservice Access Concentrator (MAC) provides a time limit for a first ringing voltage signal in response to an attempted call. The call is attempted via a voice over packet-data-network system (VOPS), wherein the VOPS comprises voice over Internet Protocol (IP), voice over Frame Relay, voice over Asynchronous Transfer Mode (ATM), and voice over High-level Data Link Control (HDLC) network systems. Generation of the first ringing voltage signal is terminated upon expiration of the time limit. A control message is transmitted to terminate the attempted call, wherein the control message is transmitted via the VOPS.

Abstract: A Multiservice Access Concentrator (MAC) provides a time limit for a first ringing voltage signal in response to an attempted call. The call is attempted via a voice over packet-data-network system (VOPS), wherein the VOPS comprises voice over Internet Protocol (IP), voice over Frame Relay, voice over Asynchronous Transfer Mode (ATM), and voice over High-level Data Link Control (HDLC) network systems. Generation of the first ringing voltage signal is terminated upon expiration of the time limit. A control message is transmitted to terminate the attempted call, wherein the control message is transmitted via the VOPS.

Abstract: Approaches for provisioning phones in packet voice networks are disclosed. One approach provides determining that an Internet Protocol (IP) phone has registered in a network; receiving a unique identifier of the IP phone; determining, based on the unique identifier of the IP phone, a user identifier of an individual user associated with the IP phone; generating a configuration for the IP phone based on the user identifier; and providing the configuration to the IP phone. Various approaches for deriving a user identifier based on the unique identifier of the phone are disclosed.

Abstract: A Multiservice Access Concentrator (MAC) provides a time limit for a first ringing voltage signal in response to an attempted call. The call is attempted via a voice over packet-data-network system (VOPS), wherein the VOPS comprises voice over Internet Protocol (IP), voice over Frame Relay, voice over Asynchronous Transfer Mode (ATM), and voice over High-level Data Link Control (HDLC) network systems. Generation of the first ringing voltage signal is terminated upon expiration of the time limit. A control message is transmitted to terminate the attempted call, wherein the control message is transmitted via the VOPS.

Abstract: A Multiservice Access Concentrator (MAC) provides a time limit for a first ringing voltage signal in response to an attempted call. The call is attempted via a voice over packet-data-network system (VOPS), wherein the VOPS comprises voice over Internet Protocol (IP), voice over Frame Relay, voice over Asynchronous Transfer Mode (ATM), and voice over High-level Data Link Control (HDLC) network systems. Generation of the first ringing voltage signal is terminated upon expiration of the time limit. A control message is transmitted to terminate the attempted call, wherein the control message is transmitted via the VOPS.

Abstract: A method for providing fail-over capability in a local branch of a call center includes determining, by a local device, which of a plurality of phones are call center phones. The determination is based on a predetermined rule set. In an alternative embodiment, the method may also include determining, by the local device, which of the plurality of call center phones are available for receiving calls. This may include determining whether a “do not disturb” function of each respective call center phone is invoked, and in response, determining whether the call center phone is available. In addition, this method may involve placing, by the local device, each call center phone into a “do not disturb” mode if the call center phone does not answer a call sent to the call center phone.

Abstract: A Multiservice Access Concentrator (MAC) is provided that provides fault tolerant permanent voice calls in a voice over packet-data-network system (VOPS). The MAC sets up at least one permanent voice call by coupling a number of nodes in series using a voice-over-packet protocol and a set of primary connection bindings. Furthermore, at least one set of alternate connection bindings are defined for the permanent voice call. At least one preference-based list is generated comprising the sets of alternate connection bindings. Each node operating with the voice-over-packet protocol is capable of determining at least one out-of-service state for the node. A failure of at least one of the series nodes is detected by the node. A reconnection relationship is established between nodes on either side of a node determined to be out of service. The permanent voice call connection is automatically re-established or reconnected using at least one alternate node.

Abstract: Routing a call includes receiving a request to initiate a call session for a call from a caller endpoint to a callee endpoint, where the caller endpoint belongs to an internal network. Whether the call is internal or external is determined. A routing mode is selected in accordance with the determination, and the call is routed according to the selected routing mode.

Abstract: A method is described that comprises receiving a ringing voltage or tip-ground signal at a first telephone interface. Then, indicating to a control system at an interface that the ringing voltage or tip-ground signal is appearing at the first telephone interface. Then, calling a remote device over a packet data network while maintaining the first telephone interface in an on-hook state. The control system causes the calling in response to the indicating.

Abstract: A method for routing integrated traffic from a remote site to a voice over packet system is disclosed. The method comprises receiving control signals at a virtual voice port of the voice over packet system. The method also comprises translating the controls signals to internal signals of the voice over packet system. Additionally, the method comprises transmitting data from the remote site to the virtual voice port and transferring the transmitted data form the virtual voice port to the physical port.

Abstract: In a telephony system have management of telephony devices distributed among multiple call management devices, the call management devices use call redirection and relaying of message waiting indications to provide voicemail services to the telephony devices using a centralized voicemail server.

Abstract: Approaches for provisioning phones in packet voice networks are disclosed. One approach comprises determining that an Internet Protocol (IP) phone has registered in a network; receiving a unique identifier of the IP phone; determining, based on the unique identifier of the IP phone, a user identifier of an individual user associated with the IP phone; generating a configuration for the IP phone based on the user identifier; and providing the configuration to the IP phone. Various approaches for deriving a user identifier based on the unique identifier of the phone are disclosed.

Abstract: Approaches for provisioning phones in packet voice networks are disclosed. One approach comprises determining that an Internet Protocol (IP) phone has registered in a network; receiving a unique identifier of the IP phone; determining, based on information provided by a user of the IP phone, a user identifier; generating a configuration for the IP phone based on the user identifier; and providing the configuration to the IP phone. Various approaches for determining a user identifier based on information provided by the user are disclosed.

Abstract: A method for compensating for asynchronous clock sources is presented. A buffer is provided for storing frames received from a packet network. The buffer having a preselected playout delay. Upon detecting a buffer overflow, a drain operation is performed on the buffer and the playout delay is modified to provide a sufficient number of buffer locations for frames to be stored. Upon detecting a buffer underflow, a fill operation is performed on the buffer and the playout delay is modified to provide a sufficient number of frames to be played out.

Abstract: The method involves transmitting plural endpoint probes to produce plural endpoint probe results indicating the preparedness of the endpoints for calls routed thereto; identifying similarly situated endpoints; and representing each of the similarly situated endpoints by a reduced number of recorded endpoint probe results that substantially represent the inter-connective preparedness of each of the similarly situated endpoints. The apparatus includes a mapping mechanism for mapping the probe results for the similarly situated endpoints into a reduced number of endpoint probe results that substantially represent the inter-connective preparedness of each of the similarly situated endpoints, and a recording mechanism for recording the reduced number of endpoint probe results. Such mapping permits an Internet operating system (IOS) router/gateway to act as an real-time responder/service assurance agent (RTR/SAA) proxy on behalf of non-RTR/SAA capable voice over Internet protocol (VoIP) endpoints.

Abstract: A method and apparatus are described to reduce delay in a communication network. A fragmentation unit re-assembles a packet received from a first data link. A refragmentation pipeline is coupled to the fragmentation unit to pipeline the re-assembled data for transmission to a second data link.

Abstract: A method and apparatus for link state determination in voice over frame-relay networks. In one embodiment, the present invention includes a method for determining link state for permanent calls in an FRF.11 voice over data network at the virtual voice channel level. This is a capability not present in FRF.11, which includes a management mechanism for determining link state of virtual circuits, but no mechanism for determining link state of virtual channels. One embodiment uses a standard FRF.11 signaling frame with a status indicator bit to signal that a channel is a primary operative channel or an alternate operative channel. The signaling frames are sent end to end through the network by an initiator device along a primary data path and all alternate data paths. If a primary or alternate path is operative, a reciprocator device returns the signaling frame along the operative path. The initiator determines by receipt or non-receipt of the signaling frames which paths are operative at any time.

Abstract: A Multiservice Access Concentrator (MAC) establishes a representation among at least one signal processing device and multiple logical channels. The signal processing devices comprise digital signal processors (DSPs). The logical channels are placed into a first resource pool. At least one logical channel is moved among at least one other resource pool in response to a request to process at least one call received over a voice over packet-data-network system (VOPS). The VOPS comprises voice over Internet Protocol (IP) network systems, voice over Frame Relay network systems, voice over Asynchronous Transfer Mode (ATM) network systems, and voice over High-level Data Link Control (HDLC) network systems. The other resource pools comprise a second resource pool and a third resource pool. The second resource pool comprises unused logical channels due to fragmentation of a signal processing device, and the third resource pool comprises active logical channels.

Abstract: In a system where fax messages are directed to a store and forward system when a fax machine is busy: When fax messages are stored and an attempt is made to re-deliver the message, an ID related to the serial number of the storage system is placed in the fax header. When a message is received by the store and forward system, the header is interrogated and if an ID related to the serial number of the receiving machine is detected, the fax is not again stored and the system notes that the transmission to the fax machine was not successful.