Modifying Interface Values After you have configured an HDLC Passthrough interface for a specified port and channel, you cannot directly change the parameters for this interface even if it is out of service. Reset Interface Display Resets the fields to the last set of applied values. To bring one or more interfaces into service, perform the step in the following procedure. Option Function Configure Opens the port and channel configuration window of a module.
Select Configure. Apply Applies the configuration field value you set. A bipo- lar coding method that does not allow more than display only 3 consecutive zeros.
Begin 1 Click the Channel Configuration tab. High-Density E1 Channel Configuration Window Note: All interfaces must be out of service before changes can be made to the port settings or the Apply button will appear to be ghosted.
The buttons in this window have the following functions: Button Function Configuring Interfaces For a list of valid interface types for the Port High-Density E1 Multiser- vicemodule, instructions on configuring interfaces, and instructions on changing an interface configuration, see Chapter 6. You may also choose to copy an interface configuration to range of slots from the appropriate Interface Configuration window.
Button Function Close Closes this window. Copy Copies this interface to a range of channels. Abort Cancels the copying process after it is initiated.
Alarms that display in the Front Panel tab and Device Tree clear automatically when the condition that created them is cor- rected.
Device Tree Status Indicators Table Page Atm Pnni 1. Clear Removes the values in this window and resets them to 0. Update Updates the information in the fields. If the scope is not set by the user, it will default to global a value of Brings an out-of- service configured interface to in-service status.
The value InService appears in the Administrative Status field. Used to poll when link is operational. The Org Scope column displays the scope of the registered addresses. Brings an out-of-ser- vice configured interface to in-service status.
The value InService displays in the Adminis- trative Status field. The protocol selected must match that used on the Range: As noted other end of the trunk or line. For more informa- tion on using this module with H. Takes an in-service con- figured interface to out-of-service status. The value OutofService displays in the Administrative Status field. The value InSer- vice is displayed in the Administrative Status field. Status OutOfService Indicates that the interface is not in service.
Clear Removes the values in the Interface Sta- tistics panel and resets them to 0. Brings an out-of-service configured interface to in-service status. The value InService displays in the Administra- tive Status field. Button Function Delete Deletes an out-of-service interface and redis- plays the Port and Channel Configuration win- dow for the module you are configuring.
You must first take interface out of service by clicking the Take Out of Service button before you can use this button. You can use the Utilization page to calculate and display the average number of cells per second, average number of bits per second for a given ATM interface and for a given time interval.
Performing an Action on an Interface If you want to Copying an Interface Configuration The Copy button on each Interface Configuration window allows you to copy an interface configuration to a range of channels, either from a given module, or for a range of modules Deleting an Interface To delete any interface type other than a virtual interface, perform the steps in the following procedure.
The following information is provided to help you connect appropriately configured cables to the Multiservice Media Gateway systems. CBR is used for applications such as circuit emulation, voice, and video. The flex- ibility of the PSAX system allows you to tailor the system based on the required service applications by selecting the appropriate priority levels. Table B See APS for additional information.
Page Glossary available bit rate. ABR changes after a connection is estab- lished, and allows the receiving device to accept data from a variety of transmitting devices which are operating at differ- ent speeds, without the need to set up data rates in advance.
ACELP algebraic code excited linear prediction. The A-Law standard is primarily used in European telephone networks. This adaptive algorithm allocates bandwidth by statistically multiplexing traffic within two sets of queues according to weighted priorities.
One set of queues addresses the avoidance of cell loss, which is normally a con- cern for data traffic, while the other manages cell transfer delay, which is critical to voice and some video traffic.
ATM Forum This organization is a consortium of corporations who develop hardware and software products using ATM to facili- tate the development, deployment, and standardization of ATM protocols and specifications. Page Glossary administrative weight. This parameter allows network archi- tects to indicate relative link preference when deciding between alternate routes.
B8ZS bipolar 8-zero substitution. This encoding scheme is used for transmitting data bits over T1 transmission systems. Page Glossary committed burst size. Page Glossary block-error correction scheme This scheme provides a method for accomplishing forward error correction FEC to compensate for error bursts created in data transmission.
This method is done by specifying a polynominal that plots, or statistically samples, a large num- ber of points in a data block. Page Glossary connection admission control. The set of actions a network takes during a call setup or renegotiation phase that deter- mine whether to accept or reject a connection request. A computer and its related software and terminals that is used to design and manufacture all types of hardware devices.
Page Glossary constant bit rate. An ATM service that supports a constant or guaranteed rate to transport services such as video or voice, as well as circuit emulation. CBR requires rigorous timing con- trol and performance parameters. Page Glossary cell extraction The removal of a cell from a data stream. The header contains various control data specific to the cell switching protocol. Page Glossary circuit-switched network A network that sets up and maintains a connection for the exclusive use of two or more communicating parties for the duration of their call.
The familiar, voice telephone network is circuit-switched. A technique of compressing voice or data before transmission and extracting expanding it at the target device to use bandwidth as economically as possible during transmission. Page Glossary connector A device connecting wires or fibers in cable either to equip- ment or to other wires or fibers.
Page Glossary cyclic redundancy check. A method of error detection using cyclic redundancy code. Based on the contents of the message transmitted, a CRC value is generated at the transmitting ter- minal. An identical CRC generation is performed at the receiving terminal, and any mismatch indicates the message was received incorrectly. Page Glossary D4 framing A common framing format in the T-1 environment. There are 12 separate bit frames in a super-frame.
A D-4 framing bit is used to identify both the channel and the signaling frame. Page Glossary debouncing Bouncing is the tendency of any two metal contacts in an elec- tronic device to generate multiple signals as the contacts close or open; debouncing is any kind of hardware device or soft- ware that ensures that only a single signal will be acted upon for a single opening or closing of a contact.
A frame relay term which defines a bit field within the address field that includes committed information rate, committed burst size, committed rate measurement interval, and excess burst size. A fast method of moving RAM which in turn, speeds processing. Page Glossary Data or digital Service Unit. A device designed to connect data terminal equipment to a digital phone line, thus allowing fully digital communications. Devices that are used to access digital data channels.
Data Terminal Equipment. Page Glossary echo cancellation A method of controlling speaker echo on long haul digital trunks. An echo cancellation system monitors the transmitted signal, digitally predicts the echo, then cancels it by subtract- ing the prediction from the received signal.
Page Glossary end-to-end provisioning Service-level provisioning that allows a network management systems NMS to issue commands that will set up connec- tions to go throughout the network, without setting up con- nections on each individual switching device.
Equiva- lent to ANSI. ETSI is creating a single European telecommu- nications system as part of the single European market pro- gram. Page Glossary fiber optic cable Fiber made of extremely pure glass. A buffering scheme in which the first byte of data that enters the buffer is also the first byte received by the CPU.
Page Glossary frame relay See FR. Frame Relay Forum Based in Foster City, CA, this organization of frame-relay equipment vendors, carriers, and users was formed in to speed the development and deployment of frame relay prod- ucts and interfaces with other broadband technologies such as ATM.
Page Glossary FRF. The interoperability standard adopted by the ATM Forum which defines a standard way for a frame relay site to communicate with an ATM site; it depends on conver- sion of the frames into ATM cells. Page T1 circuits. Heartbeat is created by a circuit normally part of the transceiver that generates a collision signal at the end of a transmission.
This signal is used by the controller interface for self-testing. The interrelated tasks computers do in addi- tion to processing that provide information to the computer, perhaps by keyboard input and get the results of processing to the user, perhaps by a printer output.
In cell bus traffic shaping, ATm traffic shaping, and UPC, output is ATM data streams leaving a switch to go to another switch or network, as distintuished from traffic output from one switch hard Page Glossary Interface Management Entity, two entities; either an end user and a public or private network, or a public network and a private network. Page Glossary Internet Originally developed by the U. Internet Protocol See IP.
It serves as an intelligent bridge between network elements that speak dif- ferent signaling protocols, and simplifies the interworking between circuit-switched and data networks. Page Glossary kilobyte See KB. A geographically localized network that includes both hardware and software and typically links per- sonal computers, printers, file servers, and other peripherals.
The LANET protocol, cou- pled with a simple error-tolerant addressing scheme, addresses the fundamental problem of noise in adapting ATM to low-speed environments. An IEEE Page Glossary loop emulation This service uses the ATM AAL2 network to essentially create an extension cord between voice ports on the CPE and the corresponding voice ports on the class 5 switch, that termi- nates on the GR based voice gateway. Page Glossary minimum cell rate.
In general, a Multiservice Page Glossary Operations, Administration, and Maintenance. These cells typically provide network fault indications, performance information, and data diagnosis functions. OC Optical carrier OC-3 Optical carrier 3.
Page Glossary pulse code modulation. The most common method of encod- ing an analog voice signal into a digital bit stream. The most common PCM method samples a voice conversation at 8, times a second, twice the highest frequency in a voice line, 4, Hz. Page Glossary pinout A description or diagram of the pins of a chip or connector.
PLAR private line, automatic ringdown. A leased voice circuit con- necting two telephones. Page 16 Contents Purpose of Traffic Descriptors A-1 Connections Supporting Traffic Descriptors. In four segments, the unique PSAX midplane allows each segment to be scaled independently to provide nonblocking, redundant chassis bandwidths beyond 4. Module protection for two groups of four or six multiport DS3, STS-1e, or E3 modules is provided via an N:1 protection scheme using rear access line interface modules.
Page 22 Chapter 1 Getting Started Text Conventions Identifies editable fields Describes the function of the field or display-only fields on Identifies initial field and special instructions for screens value default configuring modules Table To view the Help windows from the Console Interface Main Menu window, perform the following procedure.
System Software Release 8. To ensure that they operate at high speed, place them only with other high-speed modules in Segments 1—3 in the PSAX Continue processing on same DSP in Bypass mode. If the channel does not reboot, it is classified as failed and the master CPU module is notified. System Software Release 6. D Weight 0. Operating temperature These LEDs indicate if the module has been installed properly. Table These procedural constraints apply in complex networking environments in which there are multiple DSP2x modules, multiple trunk groups for voice, fax, and modem traffic, multiple packet sizes on varying interface protocols transmitting into and out The plan should include these elements: 1.
Rule 1. Configure your largest AAL2 groups first. Configure your largest AAL2 trunk groups first, and keep a record of each connection in each group, as it is assigned. To process fax calls, at least one channel must be configured as AlgoSet4 mode fax relay. You can see that this will involve splitting the second group of 40 connections between 2 modules.
Figure Command Function Apply Channel Configu- For a specified port number value, applies the ration configuration field values you set. Bring Interface Into Ser- Brings the out-of-service configured interface vice to in-service status. The options Aal1 described for this The status line prompts: Unconfigured. This Port If the first DSP interface is configured, this command will configure the remaining interfaces the same way.
All interfaces will display as Out of Service. Page Chapter 6 Configuring Ports and Channels Using the Console Interface Saving the Equipment Configuration and Logging Off CAUTION: If your system or location loses power or your current session ends abnormally while you are in the process of configuring the system, and you have not yet saved the values permanently, you will lose all unsaved values you have applied on the various windows.
Delete All Interfaces Deletes all configured interfaces that are not in service. Selecting Channels for Configuration If you want to select Select Bring Into Service. You can only use this button when the DSP2 interface is out- of-service. Copy Copies the interface configuration to a range of channels. Copying an Interface Configuration The Copy button on each Interface Configuration window allows you to copy an interface configuration to a range of channels, either from a given The system displays the following message while it is exe- cuting this command: Saving the equipment and connection information When this function is completed, the system displays the following mes Note: If the desired remote device does not appear in the Remote Switch pull-down menu, do the following: a.
Adds a new slot, port, channel, NSAP address mapping entry for the specified device.
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