Dsc Communications Corporation

Alcatel USA Sourcing, L.p.

Alcatel USA

Alcatel Lucent

Alcatel

Gary D Hanson

Richard Schroder

E Lawrence Read

Steven Dale Sensel

Edward P Traupman

Stephen A Deschaine

Dwight W Doss

Michael H Jette

Richard S Weldon, Jr

Mike M Tatachar

Neil E Glassie

Gregory L Mayhan

Serge Francois Fourcand

James Kevin McCoy

Long V Vo

Kevin W Hager

Babu Mani

Ioan V Teodorescu

Michael J Hanlon

Gerry R Dubois

Xing Chen

Kimmy F Nimon

Sharlene C Lin

Elwyn E Grant

Daniel P Lyon

Scott M Yagel

Peter O'Connell

John Abraira

Emergency call-routing apparatus, and an associated method, for use in a packet-based, telephonic network. An emergency call router is positioned selectably to provide local call handling functionality to a local network that is normally connected by way of an access gateway to the telephonic network whose operation is normally controlled by a softswitch. The apparatus is used when, e.g., a total communication link failure condition occurs between the access gateway and the softswitch. The emergency call router selectably routes calls within the local network to permit continued, local calling functionality in spite of the failure of the communication link. High-priority calls, such as calls placed to an emergency dispatch center, are routed within the local network to a designated, local-network station. And local calls are also selectably routed by the emergency call router. A call priority scheme is also used in the event that call capacity is exceeded. Calls of higher priority are permitted while calls of lower priority are blocked.

Call-routing apparatus, and associated method, for providing local call handling functions in a communication network

A telecommunications network environment ( ) includes a signaling server ( ) accessible by maintenance interfaces ( ) and network interfaces ( ). The signaling server ( ) includes a signaling link controller ( ) that receives and processes signaling information received from network elements and other signaling servers. The signaling link controller ( ) extracts a data portion of the signaling information for message transfer part level two processing. For additional processing, the data portion of the signaling information may be routed over an Ethernet switch ( ) to another signaling link controller ( ) or to a signaling services controller ( ) for signaling connection control part processing. The signaling services control element ( ) may perform local number portability lookup and global title translation on the received data portion. After processing, the signaling link controller ( ) generates a return message in response to the signaling information.

Signaling server for processing signaling information in a telecommunications network

A high speed SS7 signaling adaptation device (200) includes a platform manager (120) having a high speed control interface and operable to configure and monitor the operations of the adaptation device. An SS7 user parts process (122) is in communications with the platform manager (120) and operable to support one or more SS7 user parts protocol, and a message transfer part layer 3 process (124) is in communications with the platform manager (120) and operable to perform message routing, message distribution and message discrimination functions. A data link and physical layer process (126) is further in communications with the platform manager (120) and operable to provide broadband and narrowband SS7 signaling message transport. A plurality of high speed SS7 signaling adaptation devices are distributed in an intelligent telecommunications network. The distributed high speed SS7 signaling adaptation devices are coupled to signal transfer points which are operable to configure, manage and monitor the distributed high speed SS7 signaling adaptation devices.

High speed SS7 signaling adaptation device

A method for determining the change in frequency of a clock signal (168). The method includes the step of counting the number of clock signal cycles (168) that occur over at least two time windows (162, 164). The number of clock signal cycles counted in the first time window (162) is compared to the number of clock signal cycles counted in the second time window (164).

Method and apparatus for determining the change in frequency of a

An integrated multiple cross-connect system (10) having remotely located components interconnected by integrated office links is provided. The system (10) includes a broadband matrix (20), at least one remotely located high speed line terminating equipment (30, 32) coupled to a telecommunications network, and an integrated office link (34, 36) interconnecting the broadband matrix (10) and high speed line terminating equipment (30, 32), the integrated office link (34, 36) carrying duplex transmission of an IOL-N signal of N multiplexed STS-1P optical signals at an OC-N rate, the STS-1P signal including data payload and overhead fields. Further included is a remotely located wideband matrix (22), a second integrated office link (40) interconnecting the broadband matrix (20) and the remotely located wideband matrix (22), and at least one remotely located low speed line terminating equipment (54) coupled to a telecommunications network, where the wideband matrix (22) and low speed line terminating equipment (54) are interconnected by a third integrated office link (59). Fault coverage information including a cross-connect channel identification code and a parity value are among the IOL overhead fields. The fault coverage information in the IOL overhead fields are monitored at selected points along a transmission path.

Integrated multi-fabric digital cross-connect integrated office links

A small broadband cross-connect system (10) includes a two-stage matrix (12) for processing and cross-connecting optical and electrical telecommunication network signals. An administration subsystem (14) provides centralized control and synchronization to the two-stage matrix (12). The two-stage matrix (12) may be expanded from 96 ports to 192 ports in a cost and space effective manner.

Broadband digital cross-connect system architecture

An integrated multi-rate cross-connect system (10) includes a broadband subsystem (14) for processing optical and electrical telecommunication network signals. A wideband subsystem (16) processes wideband level electrical telecommunication signals from the network, from the broadband subsystem (14), and from a narrowband subsystem (18). The narrowband subsystem (18) processes narrowband level electrical telecommunication signals from the network and the wideband subsystem (16). An administration subsystem (12) provides centralized control and synchronization to the broadband subsystem (14), the wideband subsystem (16), and the narrowband subsystem (18). The wideband subsystem (16) is coupled to the broadband subsystem (14) and the narrowband subsystem (18) by internal transmission links (30) to allow for remote distribution of each subsystem. Each subsystem operates within its own timing island synchronized to a reference timing signal to facilitate component distribution.

Integrated multi-rate cross-connect system

In the inbound direction, a tributary processor (32) includes an SPE encoder/decoder for extracting a synchronous payload envelope (SPE) from an STS-1P signal. A path terminator (62) may extract DS3 signals or a matrix payload envelope (MPE) from the STS-1P SPE. A DS1/DS3 extractor (68) generates DS1 signals from either the DS3 or MPE signals. An MPE mapper (70) creates MPE signals from the DS1 signals. A wideband stage interface (74) converts the MPE signals into matrix transport format (MTF) signals for cross-connection in a wideband center stage matrix (22). In the outbound direction, the wideband stage interface (74) receives MTF signals from the wideband center stage matrix (22) and generates MPE signals therefrom. The MPE signals are sent through the MPE mapper (70) in order to extract DS1 signals. The DS1 signals are converted to DS3 signals or another MPE mapping by the DS1/DS3 extractor (68). The path terminator receives DS3 or MPE signals for conversion into an STS-1P SPE. The SPE encoder/decoder creates the STS-1P signals from the STS-1P SPE for transmission to the appropriate interfaced subsystem or network.

Processor device for terminating and creating synchronous transport

A timing architecture for integrating broadband, wideband, and narrowband subsystems (14-18) employs a broadband time base (100) having a first frequency, a wideband time base (102) having a second frequency, and a narrowband time base (104) having a third frequency. The broadband, wideband and narrowband time bases (100-104) are independent from one another when the integrated subsystems (14-18) are not co-located. Frequency justification is provided at the interfaces between the broadband and wideband time bases (100, 102), and between the wideband and narrowband time bases (102, 104). Phase alignment circuitry and methods are used to adjust the phases of signals wherever signal multiplexing and redundant equipment switching are provided within the time bases (100-104).

Integrated multi-fabric digital cross-connect timing architecture

A grooming device (18) includes an inbound crosspoint switch (30) that combines proprietary STS-1 signals from any of a plurality of optical terminators (16) into a grouped set of output signals for transmission to a broadband matrix subsystem through dedicated matrix interfaces (20). The inbound crosspoint switch (30) includes a crosspoint matrix (72) that receives each of the plurality of input signal lines at each output signal port and selects which input signal line is connected to which output signal port as determined by a microprocessor controller (78). Each output signal port has a register (90) for storing information as to which input signal line is to be connected to that port. A decoder (92) generates a control signal from the information stored in the register (90) to drive a multiplexer (94) for selection of the appropriate input signal line.

Grooming device for streamlining a plurality of input signal lines into

A digital switching network for providing simultaneous connections among user processors of processor-based communications equipment. The user processors act as originators and destinations of data communications packets. Packet data connections are through node controllers, which communicate with gateways, which are connected to a switching network via packet links. Control messages are communicated between node controllers, gateways, and an interchange control subsystem via various control message links. All control message processing and packet data transmissions are synchronized with a packet frame synchronization signal, and processing tasks performed by each of the network subsystems are pipelined so that they occur simultaneously. Service requests are queued in a central queue in the interchange control system. The synchronization and queueing simplify the control messages that are required to set up and release the connections.

Interprocessor switching network

Growing community of inventors

Plano, TX, United States of America

Gary D Hanson