Abstract: A session controller configured to be coupled to a database and configured to receive an indication associated with an ingress call is disclosed. The session controller is further configured to query the database for an ingress-call peer associated with the ingress call, and to query the database for a dynamic-peer-definition template associated with the ingress call when the ingress-call peer is not identified upon query of the database. The session controller is further configured to reject the ingress call when the dynamic-peer-definition template is not identified upon query of the database.

Abstract: Methods, systems, and computer program products for performing range-based directory number (DN) screening are disclosed. According to one aspect, the subject matter described herein includes a method for determining that a telecommunications device DN is within an allowed set of numerical ranges. The method includes creating a range tree for representing an allowed set of numerical DN ranges, wherein each range is defined by a numerical upper and lower bound, and storing the range tree in a memory device; receiving a telecommunications device DN to be analyzed; traversing the range tree from a root node of the tree, based on analyzing each digit of the DN, until a leaf node is reached; and determining, based on an attribute associated with the leaf node reached, whether the DN is within the allowed set of ranges.

Abstract: An IMS system including a Home Subscriber Server including data for terminals connecting to the IMS. The Home Subscriber Server being arranged to transmit a reset message to components such as application servers and S-CSCF in the IMS when it undergoes a reset. The receipt of a reset message causing the component to mark the terminals that the HSS stores the data for as not confirmed. The component then, either automatically or in response to a message, transmits a message to the Home Subscriber Server to request user profile data for a user terminal connecting to the IMS or accessing services from the IMS.

Abstract: A first network element receives a message from a second network element. The message is modified by the first network element by inserting a certificate into the message, wherein the certificate includes an identity of the first network element and a digital signature produced by the first network element. The modified message is sent to a third network element.

Abstract: A VPN media proxy for communication between VPNs and external networks having different addressing schemes, has interfaces to the two or more VPNs, a configuration store, and an address translator arranged to translate the source and destination address of the information based on the configuration. Sharing of the proxy by many VPNs can keep costs down or enable more VPNs to be provided. A call server also shared by the VPNs is used to set up the session and to establish the configuration. The proxy can have an address within each VPN so that it appears to be a dedicated resource for each VPN.

Abstract: Disclosed are methods, systems, and computer program products for notifying a Session Initiation Protocol (SIP) entity of a fast switchover event. According to one method a first SIP entity having an active host and a standby host is provided. At the active host a SUBSCRIBE message is received from a second SIP entity for subscribing to a fast switchover notification service. The standby host is switched to an active mode. In response to switching the standby host to active mode, a NOTIFY message is sent to the second SIP entity for notifying the second SIP entity that the standby host is operating in active mode.

Abstract: The present invention provides a service node, which extends the services of a carrier's multimedia subsystem (MS), such as an IP multimedia subsystem (IMS), to enterprise networks in an efficient and effective manner. As such, MS subscribers gain access to enterprise services in addition to the carrier's services provided via the carrier's circuit switched subsystems (CS) and packet subsystems (PS). The service node acts as a liaison between enterprise application servers and the MS, such that the enterprise application servers appear as MS application servers to the MS. The service node provides user identifier and protocol translation between enterprise and MS user identifiers and protocols, respectively. As such, enterprise application servers can access the MS as well as be accessed by the MS to support user mobility, with continuity of services, between the enterprise and carrier networks.

Abstract: Methods, systems, and computer program products for implementing automatic protection switching for media packets, such as ATM cells or IP packets that carry media content, in a device that includes an Ethernet switching fabric are disclosed. According to one method, first and second packet network interfaces of the device are configured to function as working and protection APS interfaces. At least one of a media processing resource and an Ethernet switch fabric of the device are configured to replicate egress media packets from the media processing resource to the working and protection APS interfaces. Egress media packets from the media processing resource are forwarded to the working and protection APS interfaces via the switch fabric. Ingress media packets received at the working APS interface are forwarded to the media processing resource via the Ethernet switch fabric. Media packets received at the protection APS interface are discarded.

Abstract: A Legacy User Proxy CSCF (“L-CSCF”) provides multimedia services from a SIP based network to legacy access networks and devices. The L-CSCF includes a legacy service control state machine; a P-CSCF state machine and associated protocols; a mapping between a user's legacy network address and a corresponding network entry point; a database and logic for mapping between legacy user addresses and corresponding authentication data; legacy specific QoS control mechanisms; and an interworking function to handle incompatibilities between the legacy and SIP call models. The L-CSCF may be disposed logically between the legacy network and the multimedia network to translate and process communications such that legacy network and multimedia network devices need not require extensive modifications in order to support operation.

Abstract: In one embodiment, a method includes receiving a media signal associated with a session established based on a session request. The session request is defined at a session exchange device associated with a media over internet protocol (MoIP) network. The method also includes sending a portion of the media signal to a dual-tone multi-frequency (DTMF) analysis module during a sampling time period after a non-sampling time period.

Abstract: A method of routing a voice call from a local media gateway to a terminating media gateway comprises determining IP network connectivity between the local media gateway and terminating media gateway and generating monitoring results, updating network resource status according to the monitoring results, generating a plurality of routes between the local media gateway and the terminating media gateway in response to the updated network resource status, determining a best route from the plurality of routes, and routing the voice call using the best route.

Abstract: In a communications network having plural nodes, a first node receives a capability list that has a predefined format and includes plural entries identifying corresponding data processing functions supported by one or more nodes along a communications path of a communications session involving the first node. The first node adds at least one additional entry into the capability list in response to determining that the first node supports a data processing function that is not identified in the capability list.

Abstract: In one embodiment, a method includes receiving a first internet protocol (IP) packet having information associated with a dual-tone multi-frequency (DTMF) signal. The information of the first IP packet is configured based on a protocol associated with a first layer of a media over internet protocol (MoIP) network. The first IP packet is associated with a destination endpoint. The method also includes producing a second IP packet having information associated with the DTMF signal. The information of the second IP packet is configured based on a protocol associated with a second layer of the MoIP network and a DTMF conversion policy associated with the destination endpoint. The second layer is different than the first layer.

Abstract: A synchronization scheme is provided that includes querying a managed device to obtain an initial device state, synchronizing the device state in a plurality of management processes, detecting a change in the initial device state, and maintaining a synchronized current device state between the managed device and the plurality of management processes.

Abstract: The present invention allows multiple participants to share streaming media in an efficient and effective manner, where with select embodiments, playback and playback control of the streaming media may be synchronized among the participants.

Abstract: A method and apparatus of communicating over a data network includes providing a user interface in a control system for call control and to display information relating to a call session. The control system communicates one or more control messages (e.g., Session Initiation Protocol or SIP messages) over the data network to establish a call session with a remote device in response to receipt of a request through the user interface. One or more commands are transmitted to a voice device associated with the control system to establish the call session between the voice device and the remote device over the data network. A Real-Time Protocol (RTP) link may be established between the voice device and the remote device.

Abstract: A method of measuring network quality for VoIP calls comprises setting up a test call from a local IP endpoint to a remote IP endpoint reachable by a logical trunk group associated with the local IP endpoint, receiving statistical data regarding the test call, tearing down the test call, processing the statistical data and generating measurement results, and routing a VoIP call using a route selected based at least in part on the measurement results.

Abstract: A system for communicating telecommunication information includes a memory, packetization modules, and a telecommunication interface module. The memory stores subscriber profiles associating each of several subscribers with a telecommunication interface. The packetization modules receive data packets from a broadband network and extract telecommunication information associated with a subscriber from the data packets. The telecommunication interface module communicates the telecommunication information to a telecommunication network using a telecommunication interface associated with the subscriber.

Abstract: The present invention provides a technique for determining which nodes are to provide various functions on traffic along a particular communication path. Generally, a communication path may include multiple nodes between which and through which traffic is routed. These nodes may include the communication terminals at either end of the communication path, as well as various types of routing nodes along the communication path. Each node will send to other nodes in the communication path information identifying the local functions it is capable of providing to the traffic carried in the communication path, and if available, remote functions capable of being provided to the traffic by other nodes in the communication path. Each node will receive from other nodes in the communication path information bearing on the remote functions. Each node will access criteria to determine whether any local functions should be applied to the traffic.

Abstract: A method and system for efficient voice transmission over internet protocol networks is provided. A first node detects a next node, and a channel is created between the first node and the next node. A first packet is received at the first node and the protocol of the first packet is detected. The first packet is merged with a second packet having the same protocol as the first packet, and the merged first packet and second packet are transmitted to the next node via the channel.