Abstract: A system and method for application location register routing at a signal transfer point (26) are provided. The signal transfer point (26) includes processor clusters (64, 66, 68) and databases (236, 238) for processing queries including global title translation, local number portability, and application location register routing. A query message is received by the signal transfer point (26), a first database residing in the signal transfer point (26) is accessed to determine the location of a second database (238) also residing in the signal transfer point for processing the query message. The second database (238) is then accessed to obtain the network address of a home location register or short message service center, which is then used to deliver the query message to the network node specified by the network address.

Abstract: The time slot interchange capabilities of modern digital loop carriers are utilized to provide direct connectivity from the calling modem's line to an internet access modem bank through the digital loop carrier, thereby bypassing the local central end office. A call which is to a telephone number of an internet access provider's modem is routed to a bypass initiator. If the bypass initiator detects that the call is from a number which is serviced by a digital loop carrier having a local central end office bypass capability, then the bypass initiator issues a bypass command. The digital loop carrier establishes the bypass connection, but does not break the signaling connection on the initial call which was routed from the digital loop carrier through the local central end office to the bypass initiator. Once the bypass connection has been established, the bypass initiator sends a disconnect signal through the signaling connection of the initial call.

Abstract: Apparatus, and an associated method, for facilitating service handling of a call placed to a public safety answering point using a universal dialing code, such as an emergency 9-1-1 dialing code. A centralized routing database is formed and maintained. When a call is originated and routed to a call routing entity, the centralized routing data base is accessed to obtain the identity of the public safety answering point to which to route the call. Thereby, a call connection is formed to an appropriate public safety answering point. Due to the centralized nature of the routing data base, updates to the data base are readily and easily ascertainable.

Abstract: A distributed local services telecommunications switching system (10, 50) is comprised of loosely coupled components, including a digital loop carrier (14, 56), an intelligent peripheral (12, 54), and a general purpose computing platform (12, 52). The digital loop carrier (14, 56) provides subscriber line interfaces (120, 150), network trunk interfaces (122, 152), and a cross-connect matrix (124, 154). The intelligent peripheral (12, 54) is coupled to the digital loop carrier (14, 56) for performing call processing functions. The general purpose computing platform (12, 52) is coupled to the digital loop carrier (14, 56) and intelligent peripheral (12, 54) for controlling and managing call processing operations thereof. The general purpose computing platform (12, 52) may be integrated or co-located with the intelligent peripheral (12, 54).

Abstract: A device and method for independent control of SDRAM memory in an SDRAM memory module. The device includes an in-line controller (ILC) coupled to receive indications of memory controller interrupt events. The ILC is coupled with the SDRAM memory, possibly through a registered buffer, in such a way that when an indication of a memory controller interrupt event is received, the ILC issues appropriate instructions to the SDRAM memory and prevents any spurious memory controller signals from being transmitted along the control bus. A memory module incorporating an ILC in communication with a memory controller and an SDRAM memory device or bank of such devices. Ultimately, a number of ILCs may be used, each controlling an individual SDRAM bank or discreet memory device.

Abstract: A signaling link interface (10) includes a high level data link controller (12) that receives signaling information from network elements in a telecommunication network. A link state controller (14) performs message transfer part level two processing on the signaling information. The link state controller (14) generates a response message that the high level data link controller (12) provides back to the network elements. The high level data link controller (12) and the link state controller (14) are implemented in hardware as field programmable gate array devices. Information related to operation of the signaling link interface (10) may be downloaded from a remote site into the field programmable gate array devices. The signaling link interface (10) processes signaling information received from a plurality of signaling links on a link by link basis.

Abstract: A control circuit includes a power controller for adjusting a bias current to a laser diode to change the power output of the laser diode, the change in power having a corresponding wavelength shift effect on the nominal operating wavelength of the laser diode and a monitoring circuit for sensing the bias current to the laser diode and for generating an output signal in response to the sensed bias current. The control circuit further includes a wavelength controller which receives the output signal from the monitoring circuit and in response to the output signal compensates for the wavelength shift such that the laser diode maintains operation at the nominal wavelength.

Abstract: The present invention provides for a method and an apparatus that implements the Bell Communications Research (now Telcordia) Specification of Signaling System No. 7, chapter T1.111.3 algorithm requirements in hardware in a manner that significantly improves throughput capacity and reduces event processing time. The software driven implementations of the MTP-2 algorithms satisfy the requirements of T1.111.3, but only a limited number of communications channels may be processed therewith. The number of channels that may be processed by the present invention, however, is only constrained by the available logic resources and gate delays. In the described embodiment of the invention, 64 channels of data may be processed by the inventive gate array formed to execute the MTP-2 algorithm. To achieve such results, the MLSC inventive gate array includes circuitry that parses incoming signaling into three different groups.

Abstract: A method for wavelength division multiplexing (WDM) fiber delay line (FDL) optical buffer routing and scheduling of conflicted variable length data packets through an optical router. The method includes ordering of each conflicted variable length data packet and selecting each of the data packets in turn for routing based on the ordering sequence selected. The sequentially assigned conflicted data packet is assigned a wavelength in the FDL optical buffer from (n) available wavelengths, wherein (n)=&lgr;1, &lgr;1, . . . , &lgr;n, &lgr;1, &lgr;1, . . . , &lgr;n, . . . . Each data packet is converted to the sequentially assigned wavelength (n) and routed to an optical buffer according to the wavelength assignment. If the wavelength of the FDL optical buffer is fully occupied the data packet is dropped.

Abstract: A preferred WDM all optical packet switched router architecture and an integrated analysis method for determining said architecture are disclosed. The method of the present invention includes the steps of simulating, with a network simulator, the operation of a desired network topology having at least one baseline router, establishing a steady state in the network simulation, applying a router and network dimensioning algorithm to the desired network topology for a predetermined number of clock cycles, and determining the preferred network router architecture based on the predetermined number of clock cycles. The baseline router used in the method of this invention can be a WDM all optical packet switched router, and the preferred network router architecture can be a WDM all-optical packet switched router architecture.

Abstract: The invention is a method and apparatus for registering a mobile node in both home and in foreign domains. A base station informs a base station router of the presence of a mobile entering the base station's coverage area by sending a mobile node advertisement message to a base station router. In addition, the mobile node sends a mobile IP registration request to the base station router. The base station router appends a base station router extension message to the mobile IP registration request (which contains an IP address of the base station router) and forwards the mobile IP registration request to a main access router. The main access router appends a multicast address extension to the mobile IP registration reply. The multicast address extension contains the multicast address allocated for the mobile node.

Abstract: A system and method for implementing channel scheduling algorithms in an optical router wherein a scheduler operates pursuant to an algorithm and is capable of determining the availability of outbound data channels capable of carrying a data packet of duration B. The scheduler is further capable of selecting one channel from available data channels and assigning the data packet to the selected channel. The scheduler then updates state information of the selected data channel, but if no data channel is available to carry the data packet the data packet is dropped.

Abstract: A predistortion linearizer, transmitter and method for linearizing a nonlinear device (e.g., power amplifier, mixer) are described. The predistortion linearizer includes a coupling circuit, a diode and a direct current adjusting circuit that work together to generate a distorted signal which is reflected onto a signal path and inputted into the nonlinear device. The distorted signal compensates for at least some of the nonlinear spurs introduced by the nonlinear device to an input signal which was also applied to the signal path and inputted into the nonlinear device. As a result, the nonlinear device outputs a compensated output signal.

Abstract: An apparatus and a method for cross connect matrices includes originating, center and terminating stages in both a main portion and a back-up portion that allows center stages to be switched without causing a framing error. The signal from the main portion is transmitted through both the back-up and main portions of the cross connect matrices such that a terminating line card receives a frame aligned signal from the main and back portions. The terminating line card then switches its output to be the signal produced by the back-up portion with no framing error. In the main portion, the center stage may be switched. After the center stage is switched, the terminating line card can switch again to output the signal from the main portion.

Abstract: A network navigator interface system and method incorporating a client/server architecture in which a network coarse-grained model (or single object) (NameSpaceObject) is used to create a fine-grained object model is disclosed. The disclosed invention permits a client application to discover the detailed interface provided by each object instance in the fine-grained model. A client application wishing to invoke an operation on a server-side object first obtains an object reference (IOR) to a NameSpaceObject instance. Each NameSpaceObject instance stores a pointer to an object in the fine-grained model. The NameSpaceObject interface provides operations to move this pointer around in a hierarchical model. Once the pointer is set to reference a certain object in the fine-grained model, this object becomes the target for all further operations. The available operations include object contents discovery/manipulation, object interface discovery and operation invocation.

Abstract: A multi-service network switch capable of providing multiple network services from a single platform. The switch incorporates a distributed packet forwarding architecture where each of the various cards is capable of making independent forwarding decisions. The switch further allows for dynamic resource management for dynamically assigning modem and ISDN resources to an incoming call. The switch may also include fault management features to guard against single points of failure within the switch. The switch further allows the partitioning of the switch into multiple virtual routers where each virtual router has its own wet of resources and a routing table. Each virtual router is further partitioned into virtual private networks for further controlling access to the network. The switch supports policy based routing where specific routing paths are selected based on a domain name, a telephone number, and the like.

Abstract: A system and method for reducing object instances and making efficient use of memory. A WeakHashMap class provided by the Java programming language is utilized to maintain a map of unique objects in memory. When a new candidate object is presented, the map is searched for an equivalent object instance and returned for use if found. If an equivalent object instance is not found, the new candidate object is unique, and is therefore added to the map. Each entry of the map stores key and value pairs. In adding the new candidate object to the map, the key portion of the entry is set to the new candidate object. The value portion of the entry is set to a weak reference which also refers to the new candidate object. Once an object in the map is no longer in use, the object is automatically purged from the memory by making use of automatic garbage collection capabilities provided by Java.

Abstract: A telecommunications system, service control point and method are provided that can establish specialized dialing plan(s) utilizing one or more of the unused country codes in the traditional international dialing plan. In particular, the telecommunications system could translate the digits of a telephone call having an international access code and a previously unused country code to direct the telephone call to a service provider instead of a foreign country. The service provider could then manage one of the new dialing plans and offer a variety of services to their customers including, for example, global vanity numbers, global local number portability, global Internet access, and private dialing plans.

Abstract: The present invention relates to an apparatus and a method for bridging of Ethernet frames between a subscriber LAN and the ATM network. In accordance with the invention a novel (time window discovery) method is used, with coordination of the network administrator and an access management system to provision a network bridging element or bridge with a set of provisioned devices authorized to forward data packets across the bridge. The bridge is allowed within a time window to learn machine-specific MAC addresses for the provisioned table. After the window is expired, or terminated by access management system, the bridge is switched back to learning mode to learn additional MAC addresses for a learned table in the traditional manner. The devices learned during the learning phase are not authorized to forward data packets across the bridge.

Abstract: Matrix recovery and link maintenance for a signaling node in an SS7 network. The signaling node comprises a planar redundant switching matrix with master and standby sides. End devices for trunk interfacing and channel data control receive data and timing from the master side, de-coupled from data and timing paths of the standby side. In steady-state, revenue traffic between the SS7 network and the signaling node runs on the master side in a pulse code modulated (PCM) form. Test channels are set up on both sides. Test patterns are propagated on the test channels for monitoring failures of timing path, PCM data, and device communication. When a failure condition is detected on the master side, the signaling node transmits idle signaling to the network, so that the revenue traffic is suspended and the link is maintained in an in-service state.