162 results about "Digital subscriber line access multiplexer" patented technology

Systems and methods are provided for automatically configuring cross-connects in a switch. One exemplary embodiment is a digital subscriber line access multiplexer for automatically configuring a plurality of cross-connects comprising: obtaining a default logical VPI/VCI address associated with the plurality of data communications channels; defining a first plurality of unique logical VPI/VCI addresses based on a predefined set of rules for incrementing logical VPI/VCI addresses, each of the first plurality of unique logical VPI/VCI addresses associated with one of the plurality of digital subscriber line communications channels; determining a second plurality of unique logical VPI/VCI addresses based on the default logical VPI/VCI address and the predefined set of rules; and creating signal connectivity between the plurality of data communications channels and the plurality of digital subscriber line communications channels by linking the first and second unique logical VPI/VCI addresses.

A system and method (200) are disclosed for managing quality of service for multimedia applications. A system that incorporates teachings of the present disclosure may include, for example, a network management system (NMS) (106) having a controller (107) that manages operations of a Digital Subscriber Line Access Multiplexer (DSLAM) (109) interfacing to a digital subscriber line (DSL) modem (114) over a digital subscriber line. The controller can be programmed to detect (204) a signal quality violation in the digital subscriber line according to a quality policy associated with a content source, cause (210) the DSLAM to interleave content supplied thereto by the content source; and cause (212) the DSLAM to allocate to the content supplied by the content source a first portion of a data service bandwidth assigned to the digital subscriber line. Additional embodiments are disclosed.

A single switch fabric-based, multi-channel bank digital subscriber line access multiplexer includes a master channel bank containing a master switch module in which the switch fabric and a downstream-directed traffic scheduler reside, and one or more expansion channel banks that are linked with the master channel bank by way of upstream and downstream communication links. Distributed among the channel banks are respective policing mechanisms and cell rate control mechanisms that control upstream-directed communications from line card ports of each expansion channel bank to the switch fabric. Downstream data transmissions are locked to network timing, and are scheduled by a centralized scheduling mechanism resident in the master channel bank.

A remote test unit (RTU) and method of operation are provided for utilizes the ability of an access matrix ability to route signals. The RTU can emulate a central Digital Subscriber Line Modem (DSLM-C) for testing customer premises equipment containing a remote Digital Subscriber Line Modem (DSLM-R). The RTU can also emulate a DSLM-R for testing central offices equipment including a digital subscriber line access multiplexer (DSLAM) containing a DSLM-C. The RTU can also emulate a concentrator connected to the DSLAM, a router connected to the concentrator, an Internet service provider (ISP) connected to the router, and a web site connected to the ISP over the Internet. The RTU can further test, using emulation, ISO/OSI layers defined in the ISO/OSI reference model which are connected to the DSLAM.

The present invention discloses a performance management system, apparatus and method between a Residential Gateway (RG) and a Broadband Remote Access Server (BRAS), the method thereof includes: configuring an OAM IWF for the protocol conversion between the performance management message of the Asynchronous Transfer Mode (ATM) Operation, Administration and Maintenance (OAM) protocol or the point-to-point Ethernet OAM protocol and the performance management message of the service layer Ethernet OAM protocol in a Digital Subscriber Line Access Multiplexer (DSLAM), when the performance management is performed in a broadband IP network, after the OAM IWF configured in the DSLAM performing the protocol conversion of performance management message, performing the end-to-end performance management between an RG and a BRAS according to the performance management message with the converted protocol. This invention can not only enhance the accuracy of the statistics of the traffic flow, but also enhance the accuracy of the SLA test.

A method and system for protecting data transfers between a switch and physical network ports transfers data from a master network interface to a slave network interface, synchronizing the data transfer through a protection first in first out circuit that references the master clock and the slave clock. The master network interface improves ATM switch efficiency by supporting optical trunk and subtend ports for a digital subscriber line access multiplexer. The slave network interface provides back-up protection on a port basis so that a failed trunk port of the master network interface is backed up by the slave network interface even while the master network interface maintains a subtend port.

A method and apparatus to permit testing of Layer 2 and higher services provisioned for a port on a digital subscriber line access multiplexer (DSLAM) line card. Each line card is provisioned with a virtual port, a virtual port cross-connect function, and a virtual port tunneling function. The virtual port can be linked to any physical port on the line card. A test host can link to the virtual port from anywhere in a network to perform verification of end-to-end service provisioning and functionality throughout a network.

A system for verifying spectral compatibility of a communication system that utilizes at least one digital subscriber line protocol includes a plurality of digital subscriber line access multiplexers and a communications channel coupling the plurality of digital subscriber line access multiplexers. Each digital subscriber line access multiplexer is operable to transmit and receive at least one message over the communications channel. The message comprises information related to a training of a digital subscriber line modem by a carrier.

An Ethernet Digital Subscriber Line Access Multiplexer (DSLAM) and method of dynamically creating a service binding in the Ethernet DSLAM based on a service selection made by an end-user. The end-user may use the PPPoE or IEEE802.1X access protocols to provide login credentials indicating the desired service. The login credentials are validated towards a RADIUS server, which configures the Ethernet DSLAM with the attributes of the service binding, including an identified Permanent Virtual Circuit (PVC) to carry the desired service. The Ethernet DSLAM may map service-VLANs to user MAC addresses or to user-VLANs to establish the service binding. The Ethernet DSLAM uses the identified PVC for downstream traffic for the corresponding service binding and thereby “trains” a learning bridge network terminal to use the correct PVC for upstream traffic.

The invention discloses MODEM, DSLAM (Digital Subscriber Line Access Multiplexer), ADSL (Asymmetrical Digital Subscriber Loop) equipment and a communication method thereof, wherein the method comprises the following steps of: conducting reverse power supply to a port corresponding to a user side MODEM in the local side DSLAM of the ADSL equipment through a power supply signal after the user side MODEM of the ADSL equipment is electrified; and stopping power supply to the port corresponding to a user side MODEM in the local side DSLAM of the ADSL equipment after the user side MODEM is diselectrified. According to the invention, the energy consumption of the DSLAM can be effectively reduced, and the service life of the equipment can be prolonged.

The present invention relates to a remote digital subscriber line access multiplexer (DSLAM), and to DSL systems providing data network services to customers. The remote DSLAM has at least two high data rate connections, from which one of the high data rate connections is an optical connection and another one of the high data rate connections is an electrical connection. Alternatively, the connections may be of the same type. The remote DSLAM also comprises a lower data rate connection(s), which is preferably a twisted-pair copper line connection. The remote DSLAM is connected to a central office, a data network node, or another remote DSLAM. The connection to the central office is preferably an optical connection, the connection to the data network node is preferably an electrical connection, and the connection to another remote DSLAM may be an optical, an electrical, or a twisted-pair copper line connection.

The invention discloses an bandwidth adjustment method and a broadband access server, wherein the bandwidth adjustment method comprises the following steps of: acquiring an IPTV (Internet Protocol Television) multicast service status of a user by the broadband access server; and when the user applies for IPTV multicast service, turning the bandwidth of service marked by a CVLAN (Customer Virtual Local Area Network) in the user down by the broadband access server so as to ensure the bandwidth for IPTV multicast service traffic. In the invention, the bandwidth traffic of the service marked by the CVLAN is regulated through a user service status learned by the broadband access server, thereby ensuring that a data packet of the IPTV multicast service can not be jammed even at a DSLAM (Digital Subscriber Lane Access Multiplexer) without QoS (Quality of Service) function when the user views the IPTV multicast programs and further guaranteeing the quality of the IPTV multicast service.

The invention provides a broadband network access method. The method comprises the following steps of: adding the port information of a receiving port of network access equipment to a received PPPoE (Point-To-Point Protocol over Ethernet) data packet, wherein the received PPPoE data packet contains user ID (Identity) information and cipher information; acquiring the standard corresponding relation between the user ID information and the port information of the network access equipment; and authenticating and accessing a network terminal corresponding to the user ID information in the PPPoE data packet according to the standard corresponding relation and the added PPPoE data packet. The invention provides a broadband network access system, a DSLAM (Digital Subscriber Line Access Multiplexer) and a BRAS (Broadband Remote Access Server). The broadband network access method and system, the DSLAM and the BRAS provided by the invention are adopted to improve the access security of the broadband network.

A system and method in a communications network of testing a communications link between Customer Premises Equipment (CPE) and a Broadband Remote Access Server (BBRAS). The CPE and BBRAS communicate mutually via an intermediate Internet Protocol Digital Subscriber Line Access Multiplexer (IPDSLAM). The CPE is connected to the IPDSLAM via an Asynchronous Transfer Mode (ATM) link, and the BBRAS is connected to the IPDSLAM via an Ethernet link. When a customer complaint is received in a Customer Care Center (CCC), the IPDSLAM is instructed to test the link. The IPDSLAM executes a first loop-back test with the CPE according to the ATM standard, and executes a second loop-back test with the BBRAS according to the Ethernet standard. The results of the first and second loop-back tests are reported to the CCC.

A distributed DSLAM, which comprises a head end subsystem located within a switching facility and a remote subsystem located outside of the switching facility. The head end subsystem is operative for routing streams of data from a data network to the remote subsystem over a communication link, while the remote subsystem is operative for transmitting over a set of local loops analog signals comprising digitally modulated versions of the data. Separating the routing and modem functionality between inside and outside plant facilities reduces heat dissipation in the outside plant, leading to increased reliability. Flow control can be performed in the upstream and downstream directions by transmitting portions of individual packets and withholding other portions of individual packets. This is done instead of withholding the transmission of entire packets. As a result, the perceived impact on video quality, for example, is lessened.

Using light splitter carries out adapted connection between main and standby master control boards in multiple stages of digital subscriber line access multiplexer (DSLAM). Thus, main master control board and standby master control board in each stage can be exchanged flexibly. Scheme of linked exchange is not necessary in the invention. Thus, back up function is realized in each stage of DSLAM. The invention raises reliability and stability of exchanging between main master control board and standby master control board in large capacity DSLAM broadband access system.

According to one embodiment of the invention, a method for providing communications services includes providing a digital subscriber line access multiplexer having a plurality of line cards. Each line card has one or more ports. The method also includes granting control of a first subset of the ports to a first service provider and granting control of a second subset of the ports to a second service provider.

The embodiment of the invention discloses a method for accessing a digital subscriber line, and a device and equipment thereof. The method comprises the following steps: acquiring the port status of a subscriber line; controlling the subscriber line ports for transferring the subscriber line ports in a use status and the subscriber line ports in an out-of-use status to different line cards according to the port status of the subscriber line; and cutting power of the line card on which the subscriber line ports are all in the out-of-service status. The technical scheme provided by the embodiment of the invention controls the subscriber line ports for transferring the subscriber line ports in a use status and the subscriber line ports in an out-of- service status to different line cards by acquiring the status information of the subscriber line ports, and cuts power of the line card on which the subscriber line ports are all in the out-of- service status, so as to reduce the power consumption for accessing the digital subscriber line.

A Digital Subscriber Line Access Multiplexer (DSLAM) is provided which comprises: a network side interface adapted to receive a plurality of communication signals conveyed along a broadband network: a storage means adapted to receive at least some of the communication signals, associate one or more corresponding priorities therewith, and store their content in accordance with at least one of the associated priorities: multiplexing means operative to retrieve content stored in the storage means and multiplex the content received with run time data received at the network side interface into a multiplexed product while ensuring at least a minimum pre-defined quality of service for the multiplexed product: a subscribers' output interface adapted to receive the multiplexed product from the multiplexing means and forward it along a communication line extending towards a subscriber; and a subscribers' input interface adapted to receive information generated by subscribers.

The invention provides a method and a device for controlling a wireless controller and aims to solve the problem that a wireless sensor network is built for specific application services and cannot be deployed in a large scope in the prior art. The method comprises the following steps of: acquiring sensing service data forwarded by a common access network from at least one wireless sensor; and performing related control over the sensing service data. When the scheme of the invention is adopted, a digital subscriber line access multiplexer (DSLAM) is provided with the functions of a sink node for serving sensor nodes with a wireless fidelity (WiFi) transmission function, so that a large-range sensor network is formed by connecting sensor nodes or local sensor networks at different positions through a telecommunication network; moreover, the sensor nodes or local sensor networks at different positions can supply acquired information to a great amount of different applications, so that a multi-service and multi-sensor service mode is realized.

Power dissipation within a network service unit, such as digital-subscriber-line access multiplexer (DSLAM), is treated as a resource that is to be shared among subscribers. In this regard, the total amount of available power dissipation is quantified, and the framing for the data streams communicated across the subscriber lines are controlled to ensure that specified power dissipation limits are not exceeded, accounting for one or more factors, such as traffic load, service level agreement (SLA) specifications, available power, and temperature.

A method and network system for implementing user port locating in multi-machine backup scenario of broadband remote access server (BRAS) are disclosed. The method comprises: configuring master port in each backup group as user access port and synchronizing information of taking the maser port as user access port to the backup port in the backup group; a remote authentication dial in user service (RADIUS) server configuring access port information, which is set as the master port in the backup group, for the user; processing master-backup switch if the master port is abnormal and the user accessing the line from the corresponding backup port; the BRAS corresponding to the backup port encapsulating the authentication message including the access line information about digital subscriber line access multiplexer of the user access and taking the maser port as the user access port, and sending the authentication message to the RADIUS server.