Abstract: Downstream digital telephony signals are transmitted over the 1310 nm transmission band of a silica optic fiber. Upstream digital telephony signals are transmitted over a "short wavelength" portion of the 1550 nm transmission band of the optic fiber, i.e. within a portion of the 1550 nm transmission band having wavelengths less than a predetermined threshold wavelength of 1550 nm. Simultaneously, downstream analog video signals are transmitted over a "long wavelength" portion of the 1550 nm transmission band of the optic fiber, i.e. within a portion of the 1550 nm transmission band having wavelengths exceeding the predetermined threshold wavelength of 1550 nm but still within an erbium-doped fiber amplifier gain profile. Thus, the upstream digital telephony signals are always transmitted at wavelengths shorter than the threshold wavelength and the downstream analog video signals are always transmitted at wavelengths longer than the threshold wavelength.

Abstract: A data bus controller is provided. The data bus controller comprises an ingress interface that receives single data streams of encoded data. A multiplexer is connected to the ingress interface and combines the single data streams into a broadcast data stream of encoded data. An egress interface connected to the multiplexer transmits the broadcast data stream. An arbiter is connected to the multiplexer. The arbiter generates control data for controlling the multiplexing of the single data streams and transmits control data to the multiplexer.

Abstract: A testing method for allowing confirmation of provisioning of a database in a telecommunication network includes providing a plurality of test messages and associated expected responses and transmitting, according to a generic provisioning protocol, the plurality of test messages to a generic provisioning unit. The generic provisioning unit is operable to receive messages according to a generic provisioning protocol that allows receipt of messages without modification of the generic provisioning protocol whenever the database is modified. The method also includes transmitting the content of the test messages from the generic provisioning unit in the database and receiving actual responses to the test messages. The actual responses are received according to the generic provisioning protocol. The method also includes comparing the actual responses to the expected responses and generating a result based on comparing the actual responses to the expected responses.

Abstract: A communication system (10) includes a central terminal (12) and a subscriber terminal (14) that communicate information through an air interface (16). A receiver (22) suitable for deployment in either the central terminal (12) or the subscriber terminal (14) includes a parallel correlator (120), a weighting module (140), and a summer (180) that provide acquisition, equalization, and tracking functions.

Abstract: The present invention provides a client station and method for controlling a telecommunications system, the telecommunications system including a central station and a server station. The server station is arranged to maintain an object model thereon representing the central station, and is connectable to the central station to send control signals to the central station in accordance with the object model. The client station comprises a communications manager for establishing first and second interfaces with the server station to enable communication between the client station and the server station, thereby to manage the object model maintained on the server. The client station has a memory for storing a portion of the object model, and a processor for processing commands received by the client station via the first interface from a queue maintained on the server station.

Abstract: A data bus interface circuit is provided. The data bus interface circuit includes interface circuitry that can receive, store, and transmit data. Egress bus input circuitry is connected to the interface circuitry. The egress bus input circuitry receives incoming STM and ATM data from a first egress data bus. STM egress bus input circuitry is connected to the interface circuitry. The STM egress bus input circuitry transmits the incoming STM data over a second egress data bus. ATM egress bus input circuitry connected to the interface circuitry transmits the incoming ATM data over a third egress data bus. STM ingress bus input circuitry receives outgoing synchronous transfer mode data, and ATM ingress bus input circuitry receives outgoing asynchronous transfer mode data. Ingress bus output circuitry connected to the interface circuitry transmits outgoing STM and outgoing ATM data over a third ingress data bus.

Abstract: A metric collector (530) provides a list of available metrics related to software development, test, and load building for the user's selection. A suite of tools (532) are executed in response to the user's selection to access a number files for data and to compute the selected metrics. A report is then generated to summarize the computed metrics.

Abstract: A method of providing a control channel between first and second access terminals in a digital loop carrier, includes forming a pool of channels coupling the first and second terminals wherein each member of the pool can be assigned either to serve as the control channel or as a data channel. A member of the pool is dynamically assigned as the control channel. The control channel can be used to convey information regarding assignment of data channels to handle an incoming or outgoing call.

Abstract: A system (10) for transmitting data is presented. The system (10) includes a data transmission medium (12, 28) and an overhead generator (40) connected to the data transmission medium (12, 28), such as through a switch. The overhead generator (40) digitally encodes control data into one or more bytes in a data transmission frame (70) used to transmit data over the system (10). The system also includes a monitor/selector (22) coupled to the data transmission medium (12, 28). The monitor/selector (22) reads the digitally encoded control data in the byte in the data transmission frame (70). A processor (24) coupled to the monitor/selector (22) processes the digitally encoded control data in the data transmission frame (70).

Abstract: A distributed telecommunications switching system (100) is disclosed. The system includes a controller (118) in a first switching system (102). The control signal is transmitted to one or more intermediate switching system (104) and a terminating switching system (106) that generates and transmits a control signal which carries a plurality of credit allowance values. The intermediate switching system (104) receives the control signal and transmits data packets to the first switching system (102) in response to a first credit allowance value. The terminating switching system (106) receives the control signal and transmits data packets to the first switching system (102) in response to a second credit allowance value. The first switching system (102) transmits data packets from the intermediate switching system (104) and the terminating switching system (106) along with its own data packets according to its credit value to a data packet switch (110).

Abstract: The present invention provides a client station and method for controlling a telecommunications system, the telecommunications system including a central station and a server station. The server station is arranged to maintain an object model thereon representing the central station, and is connectable to the central station to send control signals to the central station in accordance with the object model. The client station comprises a communications manager for establishing a connection with the server station to enable communication between the client station and the server station, thereby to manage the object model maintained on the server. The client station has a memory for storing a portion of the object model, and a processor for processing commands received by the client station to determine whether status information associated with each object in the portion of the object model should be altered, and for altering the status information based on said commands.

Abstract: Source modules (160) are checked-into a version control subsystem (12) and check-in data are sent to the file release control system (10). System 10 provides for the selection of check-in data for attaching to a release form (162), the entry of additional information, such as a problem report number associated with the source module (160), and submission of the release form (162) for approval for a build (170) of a software product. System (10) further provides for the permanent identification (171) of versions of source modules (160) with a specific build (170) of a product.

Abstract: A test system for performing pair gain tests within a co-axial cable termination unit of a combined telephony/video system is described. The combined telephony/video system provides a set of telephony channels and video channels to the co-axial cable termination unit over a single combined telephony/video transmission line. The co-axial cable termination unit includes interface circuitry in the form of modems, CODEC's, and the like, for interfacing the set of telephony channels provided on the combined telephony/video transmission line with a set of respective telephone lines connected into a subscriber location The interface circuitry also routes the video channel of the combined telephony/video transmission line onto a video-only co-axial cable also connected into the subscriber location.

Abstract: A programmable call processing system (70) provides a standard call processing process (82) performing call processing according to industry standard call models, at least one database (84, 86) storing call processing data accessible by a set of call processing state machine process (80), and at least one customized call logic program (92) for implementing extended subscriber features on a telecommunications switching system. Further, an application program interface (94) provides access by the at least one customized call logic program (92) to the at least one call processing database (84, 86) and further interrupting the standard call processing process (82) to execute the customized call logic program (92).

Abstract: An automatic switching system and method is provided for switching between paths in a telecommunications switching system. A first circuit in each path receives substantially identical telecommunications signals containing telecommunications data and transmits substantially identical digital signals containing the telecommunications data. The first circuit is capable of detecting whether errors have occurred during transmission of the telecommunications signals, and of inserting into the digital signals an error indicator if a transmission error has been detected. At least one second circuit in each path accepts the digital signals from the first circuit in a selected path, and is capable of detecting whether the error indicator is present, and automatically switching to accept the digital signals from the first circuit in the non-selected path in response to detection of the error indicator.

Abstract: A method of packaging service logic programs for dissemination in a telecommunications network includes receiving a request to package a service logic program having a plurality of service independent blocks associated with a plurality of parameters. The service logic program is copied and parsed to automatically identify the parameters associated with the service logic program. The service independent blocks of the service logic program are stored in a packaging file in a specified sequence. The associated parameters are copied and then stored in the packaging file.

Abstract: A metallic bridge (16) is operable to join a first local area network (12) with a second local area network (14). Processor cards (18, 20 and 22) are deployed to provide redundant protection. Processor card (18a) is attached to LAN A (12) and processor card (18b) is attached to LAN B (14). In the event of a single point of failure in either the processor cards (18, 20 and 22) or the local area network media or a power failure, the metallic bridge (16) will open and separate the local area networks (12, 14). Operation will continue on the operable local area network.

Abstract: A circuitry (10) is provided for automatically retiming a received synchronous data signal to a local clock. The circuitry (10) includes a first flip-flop (20) operable to register at least one synchronous data signal in response to a receive clock signal and to generate at least one data output signal. An OR gate (26) receives a data latch enable signal and a local clock signal. The local clock signal is frequency coherent with the receive clock signal. The OR gate (26) produces an enable signal. A latch (28) is coupled to the OR gate (26) for receiving the enable signal and in cascading arrangement with the first flip-flop (20). The latch (28) latches the data output signal on the falling edge of the local clock signal when the data latch enable signal is low. The latch (28) holds the latched data output signal as long as the local clock signal and the data latch enable signal are low. When either the local clock signal or the data latch enable signal is high, the latch (28) passes the data output signal.

Abstract: An optical interface circuit ?40! is provided. The optical interface circuit ?40! includes a receiver circuit ?82, 102! that receives incoming data from an optical signal and generates an electrical signal having the encoded data. The optical interface circuit ?40! also includes a transmitter circuit ?82, 104! that receives outgoing data and encodes the outgoing data into an optical signal. An interface circuit ?112! connected to the receiver circuit ?82, 102! and the transmitter circuit ?82, 104! transmits control commands and control data to the receiver circuit ?82, 102! and the transmitter circuit ?82, 104!, and receives response data from the receiver circuit ?82, 102! and the transmitter circuit ?82, 104!. A controller circuit ?84, 114! connected to the interface circuit ?112! transmits the control commands and the control data to the interface circuit ?112! and receives the response data from the interface circuit ?112!.

Abstract: An interface unit (12) for interfacing a digital loop carrier (16) to a digital cross-connect (14) comprises a control interface (22) coupled between the digital cross-connect (14) and digital loop carrier (16) for conversion and communication of control messages therebetween. A timing interface (32) is further coupled between the digital cross-connect (14) and digital loop carrier (16) for generally synchronizing the operations thereof. Further, a matrix interface (30) is coupled between the digital cross-connect (14) and digital loop carrier (16) for converting data rates and formats of data in the digital cross-connect (14) and digital loop carrier (16), so that network signals received by the digital loop carrier (16) are converted from a first format to a second format and communicated by the matrix interface (30) to the digital cross-connect (14) for cross-connection, and cross-connected data are converted from the second format to the first format and communicated to the digital loop carrier (16).