511 lines
21 KiB
Plaintext
511 lines
21 KiB
Plaintext
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Advanced Digital Network (ADN)
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----------------------------
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Description
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Advanced Digital Network (ADN) is a digital, private line
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transport service that provides full duplex four-wire
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transmission of synchronous serial data. ADN boasts a complete
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range of features including variable speeds, customer-controlled
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network reconfiguration, and network control and diagnostics. You
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can even combine your 1.544 mbps High Capacity Digital service
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with ADN service to take advantage of High Capacity Digital
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Service (HCDS) economies.
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ADN's evolutionary, microprocessor-based technology offers the
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most advanced transmission capabilities available today. This
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innovative technology offers new speeds -- 19.2, 32, 38.4, and 64
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kbps. For the first time, variable speeds and new network
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control and diagnostics are available to you in a digital format.
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Meanwhile, ADN's error control capabilities exceed all existing
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standards for error correction performance. And while it offers
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many Integrated Services Digital Network (ISDN) capabilities now,
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ADN also allows a smooth transition into your ISDN future.
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Flexibility
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If your organization is growing, you are well aware of the need
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for control and flexibility of your communications resources.
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ADN offers unsurpassed flexibility that helps you meet the
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demands on your network more efficiently. The variable speed
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service will help you support multiple applications. ADN's
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reconfiguration lets you adapt your network to meet daily,
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occasional, or seasonal data traffic needs; you can reconfigure
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your T-1 network or individual channels over dial-up or dedicated
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facilities. Or, if you prefer, a Pacific Bell employee will
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reconfigure your network for you when you contact the Customer
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Interface Management Site (CIMS).
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Disaster Recovery
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-----------------
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ADN's reconfiguration is the ideal solution for handling a
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disaster recovery situation. If a key element in your network
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fails, you can immediately reroute traffic to circumvent the
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problem. And ADN's network control and diagnostics help you
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monitor performance, identify and isolate problems, and make
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adjustments within the network so that you can obtain optimal use
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of your network.
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Universal Availability
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----------------------
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ADN provides intraLATA service and will connect to interLATA
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services.
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Effective Network Control
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If your company is growing, you realize the value of complete
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network flexibility, as sell as advanced network control and
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diagnostic capability. With the constant flux in communications,
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your business will benefit from communication channels that are
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available and can be changed virtually on demand. With ADN, you
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get this and more.
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Improved Efficiency
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-------------------
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Customer network management features make ADN one of the most
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efficient networks available today. You can finally eliminate
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the inefficiency of over-trunking to prepare for peak demand
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periods. With ADN's network reconfiguration feature, you can
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route your overload voice or data traffic to the underutilized
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legs of your network.
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You can minimize the impact of a failure in any critical element
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in your network. With ADN's network reconfiguration capability
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you can keep your business running smoothly by routing traffic
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around the problem component.
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Dependability
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All of ADN's components have proven highly dependable throughout
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extensive evaluation and testing. Much of ADN uses Pacific
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Bell's reliable network: the local loop, the T-1 link, the
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digital cross connect system, the master controller (for your
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network reconfiguration), and the synchronization network. And
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the truly new, intelligent technology in our Serving Wire Centers
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have undergone rigorous testing and have proven the extraordinary
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reliability expected of a Pacific Bell network product.
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Proven Technology
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The digital cross-connect system used for your ADN network has
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acquired a reputation, over many years and several thousands of
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hours of service, as a trouble-free system for user-controlled
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network management.
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Meanwhile, the critical components are located in Pacific Bell
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Serving Wire Centers, which ensures that maintenance will be
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available around-the-clock by trained personnel to ensure rapid
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restoral.
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System Security
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Because ADN is provisioned in Pacific Bell Serving Wire Centers,
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it offers a degree of security unattainable by customer-premises
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equipment. It offers security features that make it one of the
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most safeguarded systems in the Public Network.
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If you want control over individual channels of your T-1 network
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-- either at a predetermined time or on demand -- you can have it
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with ADN's network reconfiguration feature. You can manage
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network addresses, perform loopback tests, activate and
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deactivate network devices, set default parameters, and arrange
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time-of-day routing -- among other control functions.
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Operational Control
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ADN offers the operational control that you need over your
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telecommunications network. ADN's combination of network
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reconfiguration, control, and diagnostics features lets you
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customize your level of control.
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The multi-level security used with ADN's customer network
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reconfiguration will satisfy even the most security-minded
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network manager. Through a mix of network, system, and
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application security levels, access is limited to authorized
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customers or authorized users within the customer's business.
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Single Point of Contact
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The Customer Interface Management Site (CIMS) is a central
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response center for your ADN service needs. And not only will
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CIMS be there if you need assistance, they will even step in to
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reconfigure your network according to your instructions.
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Data Service Unit (DSU) or Adaptive Data Service Unit (ADSU)
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The customer-provided Data Service Unit or Adaptive Data Service
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Unit is the only piece of equipment that you need to have in
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order to use the ADN service. for fixed speeds of 2.4, 4.8, 9.6,
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19.2 and 56 kbps, you can use your existing Channel Service
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Unit/Data Service Unit.
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The Adaptive Data Service Unit is a new customer-provided Data
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Service Unit that is able to interact with the new capabilities
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of ADN; it is currently available from a number of distributors.
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Local Loop
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The local loop is a four-wire, non-loaded copper pair that
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connects your premises to the local Serving Wire Center.
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Serving Wire Center (SWC)
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Each Serving Wire Center has a time division multiplexer, called
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a D4 digital channel bank, that combines 24 digital channel
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signals into one digital T-1 carrier signal.
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Interoffice Facilities
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Fast, accurate T-1 carriers on optical fiber or copper connect
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the Serving Wire Centers and the digital cross-connect nodes.
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Fiber optics will the the first choice facility to connect nodes
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and Serving Wire Centers.
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Digital Cross-Connect System (DCS) Node
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A digital cross-connect system node is a Serving Wire Center that
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houses a digital cross-connect system through which all traffic
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passes. The digital cross-connect system is a software-
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controlled time division switch that interconnects the T-1
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systems. It facilitates network administration, disaster
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recovery, and remote single point testing.
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Master Controller
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The master controller is a remote processor that communicates
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with each digital cross-connect system node. It provides the
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capability to access and store models or predetermined routing
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plans. The master controller provides security and partitioning
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capability to maintain complete network security.
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Variable Speeds
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ADN's variable speed capabilities let you change your network's
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transmission speed to meet your unique data needs. You can use
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your Adaptive Data Service Unit (ADSU) to change the data rate
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for specific applications or to automatically slow your
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transmission speed when unacceptable error levels are reached.
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The master Adaptive Data Service Unit will change the rate; all
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devices will match the rate.
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ADN offers variable speed selection in two ranges:
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- 1.2 to 38.4 kbps, including 1.2, 2.4, 4.8, 9.6, 19.2, 32 and
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384. kbps.
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- 1.2 to 64 kbps, including 1.2, 2.4, 4.8, 9.6, 19.2, 32, 38.4,
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and 64 kbps.
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Network Error Correction:
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And innovative, new forward error correction technique is
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included with the 1.2 to 64 kbps variable speed range. If an
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error occurs, ADN will automatically correct it, making your
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transmissions as error-free as possible. This technique improves
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the network error performance by a factor of 10(-5).
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Network Control and Diagnostics
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With ADN, you can choose from a host of optional network
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features. You will have as much control over your ADN network as
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you need; if you prefer, Pacific Bell will perform the ADN
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network control and diagnostics functions for you. The network
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control and diagnostics features allow you or Pacific Bell to
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monitor the network performance of your Pacific Bell ADN services
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and adjust for conditions in the network or environment.
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For example, by assigning addresses to the intelligent elements
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in Pacific Bell's ADN Service, you can monitor segments of the
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circuit. You can:
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- Check the status, address, and speed of each intelligent unit
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- Perform loopback tests to help isolate problems
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- Measure error performance
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- Activate and deactivate circuit segments on a selective basis
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Network Reconfiguration
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Reconfiguration off your network is available with ADN's fixed or
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variable speed service. With it, you can adapt your network to
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meet changing communications needs. Or, if you prefer, you can
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call in your reconfiguration needs and a Pacific Bell employee
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will reconfigure your network for you. You or Pacific Bell can:
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- Change your individual circuit segments or your T-1 network on
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demand
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- Establish time-of-day routing, which reroutes traffic at a
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predetermined time
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- Circumvent trouble spots if a network component fails.
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- Route overload traffic to the underutilized legs of your
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network
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during peak hours.
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If you plan to manage the network reconfiguration feature, you
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will need a standard RS232 terminal so that you can send your
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reconfiguration instructions to the master controller.
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Secondary/Subchannel Capability
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ADN's fixed or variable speed service offers a lower speed,
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derived data channel that operates with your primary data
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channel. You can use this secondary/subchannel for exchanging
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test, diagnostic, measurement, and control messages between
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remote terminals. Or you can use as a slow speed, general
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purpose data channel to transport information such as air
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conditioning, heating, lighting, refrigeration, or smoke and
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security alarm information.
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ADN Applications
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Banking or Finance
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Banks and finance companies demand secure data transfer over high-
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speed, private airlines. Bank teller networks, credit
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verification systems, and other mainframe applications require
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daily back up to protect customer records. ADN meets these needs
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and provides applications for Automatic Teller Machines, Point of
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Sale terminals, and video teleconferencing among branches.
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The daily transfer of large amounts of money over the FedWire
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packet switching network remains one of the most critical banking
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functions. With the proliferation of bank mergers and
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acquisitions, consolidating and transferring data to a
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centralized location has taken on a new meaning. ADN can help
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create a single, unified network with flexible connections and
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access to Pacific Bell's Public Packet Switching Network.
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Meanwhile, the Securities and Exchange Commission requires that
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stock brokerage firms and finance companies provide extensive
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disaster recovery facilities, including duplicate operations for
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both computer processing and telecommunications. These
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facilities may involve an enormous cost. ADN, however,
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incorporates redundancy into a single network instead of
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duplicating capability for separate voice and data networks.
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Education
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In a campus environment, ADN has a multitude of applications:
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file transfer, network management, computer-aided design/computer-
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aided manufacturing, disaster recovery, time-of-day routing, and
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LAN-to-LAN linkages all have a place in the world of education.
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ADN's most valued applications are those that help attract top-
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notch students and faculty.
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Interactive television and teleconferencing, for example, are
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being used by many colleges and universities. This provides a
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way to reach satellite campuses, continuing education students,
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and local businesses involved in research consortia. However,
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setting up such a network can be both tedious and expensive.
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With the flexible connectivity of ADN, linking groups of
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students, teachers, and practitioners is easy.
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ADN is also ideal for information retrieval -- linking a card
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catalog data base to library terminals around campus. This
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dedicated link allows speedy library searches from many locations
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and creates a system that is easy to update, maintain, and use.
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Retail
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In the competitive retail environment, customer service
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departments need streamlined data communications to ensure
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prompt, courteous responses to consumers' needs. Electronic
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funds transfer, Point of Sale terminals, disaster recovery, time-
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of-day routing, and LAN-to-LAN communication all play a role in
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improving customer service capabilities.
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An automated, paperless inventory system is one way that ADN can
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bring a retail business up-to-date. Many retailers will benefit
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from a highly efficient inventory system that facilitates
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restocking -- with little or no involvement from managers. By
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creating a flexible network between corporate headquarters,
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suppliers, retail outlets, and the public, you can keep abreast
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of customers' buying patterns, stock only what sells, and reduce
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your need for a large inventory.
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Manufacturing
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Many manufacturers today have recovered from the harsh economic
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realities of past decades. Yet a deindustrialized economy
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continues to force manufacturers toward even greater productivity
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and strategic positioning. ADN can create an advanced
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communications system that is flexible enough to accommodate your
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innovative environment.
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To increase your productivity and reduce paper flow, you may have
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established an automated inventory system or a LAN to link
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production plants, sales offices, and research groups. ADN can
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provide further efficiency by linking these partial, innovative
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solutions into a comprehensive dedicated network.
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And you can use ADN for other applications such as transferring
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files, managing your network, video teleconferencing, retrieving
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data base information, accessing computer-aided design/computer-
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aided manufacturing information, recovering from disasters, and
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time-of-day routing.
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File Transfer
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Businesses small and large need secure data transfer between
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computers. Whether a hospital is receiving laboratory results, a
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manufacturer is transmitting inventory or design information, or
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a government office is performing daily tasks, businesses depend
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upon the ability to transfer files.
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With ADN, the complexities of transporting sensitive information
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on magnetic tape or diskettes are not a worry. ADN provides
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direct data links for secure, fast, and dependable transmission
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on demand or at a set time each day or week.
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Electronic Funds Transfer (EFT)
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Today's fierce competitive banking environment calls for
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innovative solutions which are often costly to establish and
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maintain. Electronic funds transfer, for example, can help
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maximize your Organization's profitability -- but only if
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efficient, cost-effective telecommunications services are used to
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get you there. ADN can help you connect your customers so money
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can be transferred whenever necessary. And because ADN is as
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secure and error-free as possible, you can be sure that your
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transfer will happen as planned.
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Automated Teller Machines (ATMs)
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Today's consumers are on the run and demand the conveniences of
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Automated Teller Machines. If your bank or retail business
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offers ATMs or Point of Sale (POS) terminals, you know that these
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online transactions require a highly reliable, secure, and fast
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circuit so that consumers can deposit, withdraw, and transfer
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funds around-the-clock. ADN is a superior transmission medium
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for these online applications.
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Video Teleconferencing
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Video teleconferencing is a valuable tool for many organizations.
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Educational institutions can telecast lectures or laboratory
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experiments to business or satellite college campuses.
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Manufacturing plants can use video to cross-train employees.
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Police departments use video teleconferences with District
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Attorneys' offices when questioning crime witnesses.
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Transportation departments can use video for freeway
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surveillance. And teleconferencing saves costly travel and time
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for many corporations.
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ADN is a perfect medium for limited duration, high band-width
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applications such as broadcasting and teleconferencing. The
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network reconfiguration feature lets you establish real-time,
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point-to-point, video teleconferences on demand or on a daily or
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weekly schedule.
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Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM)
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If you work in a manufacturing or high-tech environment, you are
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aware that your communications requirements can increase
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dramatically when your company adds complex simulations programs.
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Technologies such as 3-D imaging, mechanical or chemical
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simulations, and precise variance calculations may require new
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links with data bases and computer networks.
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ADN can help you provide a dependable system to meet the demands
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of the engineering staff. With ADN, you can ensure that design
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engineers will have ready access to the computer-aided
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design/computer-aided manufacturing host -- and that you will
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receive maximum productivity from your company's computer-aided
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design/computer-aided manufacturing system.
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Disaster Recovery
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If your business has critical information stored in a data base
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or depends upon daily contact with the data center, you realize
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the importance of protecting yourself from power or equipment
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failures.
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In the event of an emergency -- caused by natural disaster, line
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failure, or human error -- you must quickly switch to a backup
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processor, restore computing facilities, and retrieve backup
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tapes of data base information to guarantee communications among
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departments, decision-makers, and the public.
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ADN will allow you to prepare for an emergency. Just transmit
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your preplanned network routing models to Pacific Bell's master
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controller. In the event of a disaster, you can simply send the
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instruction to execute the mapped plan, and the network will
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begin the backup recovery procedures.
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And if you experience a line failure in a portion of your
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network, you can easily reconfigure your network to route
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critical data traffic to an alternate processing center.
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LAN-to-LAN Interconnection
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--------------------------
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In many businesses, departmental computing systems are isolated
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islands of computing power. Advanced Digital Network can link
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your departmental systems so that users can access more of the
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data resources available to them. And if your business is
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expanding or launching a new service offering, ADN can help you
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establish communication links between multiple locations without
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compromising efficiency or wasting resources. As the technology
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or your needs change, you can expand or reconfigure your system
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for maximum efficiency.
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Low Error Rate
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--------------
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ADN has an error performance objective of 99.5%, which is
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comparable to existing digital services. Withe the sophisticated
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error correction techniques offered with the 1.2 to 64 kbps
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variable speed option, steps will automatically be taken to
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correct any errors that occur -- making your transmissions
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surpass the objective of 99.5%. Its error correction techniques
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alone have improved the inherent network error by a power of 10(-
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5).
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Dependable Network
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------------------
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The dependable digital cross-connect system that you will be
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using is a trouble-free system for managing your network.
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Because the critical network components are located in Pacific
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Bell's Serving Wire Centers, you are guaranteed that maintenance
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will be available 24 hours a day.
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ADN is available in a Fixed Speed and a Variable Speed service.
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With Variable Speed the user has the option of changing speeds.
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Fixed Speeds Installation Monthly
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------------ ------------ -------
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- 2.4 kbps $620.00 $50.05
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- 4.8 kbps $620.00 $50.05
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- 9.6 kbps $620.00 $50.05
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- 19.2 kbps $620.00 $50.05
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- 56.0 kbps $620.00 $50.05
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plus $6/month per airline mile
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Variable Speeds Installation Monthly
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------------ ------------ -------
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- 1.2 to 38.4 kbps $620.00 $66.85
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plus $6/month per airline mile
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- 1.2 to 64.0 kbps $620.00 $75.25
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plus $12/month per airline mile
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For More Information
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--------------------
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For more information on Pacific Bell's Advanced Digital Network,
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contact your Pacific Bell account team.
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