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Declaration of CE Conformance (for International sales) A Declaration of CE Conformance is on file at the Nortel addresses shown below. The declaration lists the models described in this manual. If the unit carries the CE mark, this declaration certifies that it meets the specific EMC standards and safety (LVD) standards required for CE marking.
• Glossary - Glossary of Terms Passport 4400 Series The Passport 4400 series of multiservice access devices combines voice, fax, video, IP and legacy data traffic over a choice of link options providing cost- effective and easily managed networking solutions.
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Passport 4400 Introduction and Road Map About this Document All base units include the chassis, power supply, fan unit, and Ethernet Base Module. Refer to Section 2, Ordering Codes, for a complete list of model numbers. Model 4430 Model 4450 and 4455 (160W Power Supply Unit) Model 4450 and 4455 (200W Power Supply Unit)
Concepts and Applications This section discusses the key benefits and applications of the Passport 4400 in the areas listed below. (Special topics of interest that are included in the subsections, are parenthetically noted.) • Product Concept • Bandwidth Management • Voice Networks (NAS and NAC) •...
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Passport 4400 Introduction and Road Map Concepts and Applications PANL can link the Passport 4400 to another Passport 4400 or to the Passport 6400. In addition to PANL connections, the Passport 4400 can connect to third party routers using frame relay PVCs and the RFC 1490 encapsulation standard.
Concepts and Applications Passport 4400 Introduction and Road Map Bandwidth Management The Passport 4400 utilizes ClearVoice, silence suppression and fax demodu- lation technologies to reduce voice/fax bandwidth requirements as much as 96 percent, while delivering toll-quality voice. With both analog and digital voice/ fax offerings, the Passport 4400 delivers efficient integration networking on WAN links ranging from 9.6 kbps to 1.544/2.048 Mbps.
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Passport 4400 Introduction and Road Map Concepts and Applications Bandwidth Management Features Feature Description Benefits Voice Compression Delivers toll-quality voice at Frees up bandwidth for other 8 kbps, based on the ITU types of traffic. G.729 CS-ACELP voice Toll quality voice. compression standard.
Frees up bandwidth for other ClearVoice uses the ITU G.729 types of traffic while providing CS-ACELP voice compression toll-quality voice. standard, optimized based on years of Nortel telephony Voice interfaces have been service. proven worldwide in more than 200 country-specific environments.
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Overlap dialing is also PBX features such as calling supported. the ID display and call forwarding across a Passport Uses Nortel Networks’ G.729- network. based ClearVoice technology. Autocall Configurable option that Simplifies calling, since no permits a user to be connected numbers must be dialed.
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Multi-Frequency (DTMF) and then makes a routing dialing on tie trunks on choice (least-cost routing). It products such as Nortel waits for acknowledgment Networks’ Norstar or AT&T (wink) from the next switching Legend Hybrid Key Telephone unit before sending the dialing systems.
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Passport 4400 Introduction and Road Map Concepts and Applications Feature (cont’d) Description (cont’d) Benefits (cont’d) Hoot and Holler An always-up voice connection Enables use of the Passport method used in financial trader/ 4400 in financial trader/ brokerage firms. Hoot and brokerage applications.
Passport 4400 Introduction and Road Map Concepts and Applications Auto-learning Directory Server The Data Network Address (DNA) Individual Passport 4400 units are identified by their Data Network Address (DNA). The DNA is assigned to each passport 4400 as a unique number, from one to 15 digits in length.
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Concepts and Applications Passport 4400 Introduction and Road Map • Relays DN-DNA requests, if not in its local cache, to the NAS. After receiving the information from the NAS, it populates local cache with the DN-DNA address mapping. Network Address Server 1 : 4400 Initialization 2-4 : Voice Call Setup Example #:...
Passport 4400 Introduction and Road Map Concepts and Applications NAC Cache Every Passport 4400 maintains a local cache of DN-DNA mapping of the last dialed telephone numbers. The local cache can be provisioned with up to 100 static entries of frequently dialed numbers. The purpose of the cache is to minimize the need for a Passport 4400 to interact with the NAS or VNCS, saving WAN bandwidth.
Internet services. Full support for IP and IPX routing and bridging for non-IP/IPX protocols allows quick and easy deployment of networking applications. Additionally, Nortel Networks’ intelligent routing technology ensures efficient use of WAN bandwidth.
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Passport 4400 Introduction and Road Map Concepts and Applications Feature (cont’d) Description (cont’d) Benefits (cont’d) IP and IPX filters in Filtering capabilities allows the Isolates network traffic for bridged mode Passport 4400 to accept or security and bandwidth control, ignore specific types of packets improving LAN performance.
Concepts and Applications Passport 4400 Introduction and Road Map RFC 1490 The Passport 4400 supports RFC 1490 frame relay Direct Connect. This means that it interoperates with third-party routers directly off of the frame relay cloud. Third-party routers may also be connected to the Passport 4400 through their own frame relay ports.
Passport 4400 Introduction and Road Map Concepts and Applications Router Passport 4400 Router Passport 4400 PANL RFC 1490 RFC 1490 Frame Relay PANL Internet RFC 1490 PVC: PANL PVC: IP Application Video Networks With video conferencing rising as a popular and cost-effective alternative to face-to-face meetings, Passport 4400 offers the ability to share visual materials through video conferences offering a “virtual meeting”...
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Concepts and Applications Passport 4400 Introduction and Road Map Video Features Feature Description Benefits End-to-end QoS Effective prioritization on Delivers high quality video. WAN link from branch, Integrity of real-time along with adequate CIR applications ensures ease- service from provider (for of-use and user satisfaction.
• Token Ring SNA (order with optional TR port) • Token Ring ISRB/IFRG (order with optional TR port) The LDM permits legacy service interworking between Passport 4400 series devices connected to a Passport backbone. Full service interworking for all legacy protocols supported by the LDM is possible with DPN-100 equipment as well.
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Concepts and Applications Passport 4400 Introduction and Road Map Legacy Data Features Feature Description Benefits Frame relay DCE The Passport 4400 acts as the Supports and consolidates service data communications frame relay traffic from an equipment (DCE) and an existing outboard device, such outboard device, such as a as a router or FRAD.
Concepts and Applications Passport 4400 Introduction and Road Map WAN Services The Passport 4400 supports a broad range of network link options, including frame relay, ISDN and leased lines. This gives the flexibility to choose the most cost-effective WAN connection at each site. The Passport Access Network Link (PANL) The Passport 4400 uses a frame relay-based network link protocol called the Passport Access Network Link (PANL).
Passport 4400 decreases the quantity of PVCs that need to be supplied by the frame relay service provider. With Nortel Networks’ SVC technology, multi-service traffic is carried over a single PVC. A different Class of Service (CoS) may be assigned to each SVC. For frame relay, the SVCs are carried within a PVC operating the PANL protocol.
Concepts and Applications Passport 4400 Introduction and Road Map Voice Traffic IP Traffic Sync Data Tunnel Switched Virtual Circuits Backup Services The Passport 4400 provides backup services via dial-up analog modems, dial- up ISDN, and frame relay connections. When analog or ISDN PSTN connections are used in the event of a primary WAN link failure, the Passport 4400 automatically establishes the backup link.
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Passport 4400 Introduction and Road Map Concepts and Applications Dedicated Backup Allows the Passport 4400 to Protects against the failure establish an alternate of the network link. connection via a public Alternate connection frame backup service or automatically made upon dedicated leased line.
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Concepts and Applications Passport 4400 Introduction and Road Map Frame Relay - Alternate Carrier Passport 4400 Main Link Frame Failure Relay Passport 4400 Dedicated Frame Relay Backup Auto-Answer Modem Auto-Originate Analog Modem PSTN Passport 4400 Main Link Frame Failure Relay Passport 4400 Analog PSTN Dial Backup Backup...
Passport 4400 Introduction and Road Map Concepts and Applications Scalability The Passport 4400 is highly scalable and can operate in networks as small as two nodes or as large as thousands of nodes. A network combining Passport 4400s together with Passport 6400 enterprise network switches is scaleable to thousands of nodes with fully integrated management support.
Concepts and Applications Passport 4400 Introduction and Road Map User Core Routing Passport 4400s have integral, user core router (UCR) functionality. The UCR allows traffic to be routed and concentrated between remote-branch Passport 4400s. Each branch Passport 4400 has an SVC set up to the UCR. When a Passport 4400 sends data to the UCR, the UCR determines if the destination Passport 4400 is located on its list of DLCIs.
Passport 4400 Introduction and Road Map Concepts and Applications Integrated Passport 4400/6400 Networks Passport 4400 products interwork seamlessly with the larger and more powerful Passport 6400 products, providing complete end-to-end, fully integrated networking solutions. They extend the benefits of the Passport high-speed WAN network, including end-to-end switched virtual circuits and quality of service, to the smallest branch office.
Concepts and Applications Passport 4400 Introduction and Road Map Installation and Service The Passport 4400 features promote simplified and time-efficient installation and service. These features were designed to: • Minimize on-site visits and travel time • Reduce on-site skill requirements and tools needed •...
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Passport 4400 Introduction and Road Map Concepts and Applications Feature Description Benefits Diagnostics and CPU - Processor, Bandwidth Enables network monitoring. statistics and Buffer Utilization. Enables fine-tuning for optimal Voice - Voice dB settings; E&M performance. signal status; Voice and Fax Allows troubleshooting.
Concepts and Applications Passport 4400 Introduction and Road Map InstallTool The Passport 4400 features a Windows-based, user-friendly installation tool called InstallTool. InstallTool 2.0 simplifies installation and basic configuration thus eliminating the requirement that Passport 4400 be installed by highly technical personnel. With its Wizards based approach, InstallTool walks the installer step-by-step through the setup of voice, video, IP/IPX, legacy data and WAN services.
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Passport 4400 Introduction and Road Map Concepts and Applications Traffic Management Features Feature Description Benefits Multiple CoS Egress priority based upon two Prioritization ensures traffic dimensions: receives required level of service. • Importance: application priority Mission-critical applications (e.g., on-line transaction •...
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Concepts and Applications Passport 4400 Introduction and Road Map Transfer Priority SVC Queues TP15 Reserved for LAPF and LMI traffic. RFC1490 traffic TP 10-14 Delay sensitive traffic (voice) To WAN Link Emission TP 9 Queue TP 3-8 HTDS, FRDCE, CBR TP 0-2 LAN traffic Passport 4400 Traffic Management Process...
(for IP) and RFC 1362 (for IPX). Nortel Networks’ products are certified by numerous network providers, including AT&T, MCI, Sprint, WorldComm and EMI. Also, Nortel Networks is ISO 9001 certified to ensure a consistent level of quality in delivery of products and services. 1-34...
Ordering Codes Ordering Codes are used when ordering specific Passport 4400 packages and accessories. The following lists contain the Passport 4400 Ordering Codes and their descriptions. Base Systems AC Base Systems Each AC package listed below contains the Ethernet base Module and the management port cable.
Passport 4400 Introduction and Road Map Ordering Codes DC Base Systems Each DC package listed below contains the Ethernet base Module and the management port cable. Software, power cords and data cables are ordered separately. Ordering Code Description NTJ740BA 4450 160W DC Base System (without power cord)* 5-Slot 160W DC unit, Management Port Cable, Hardware Installation Manual NTJ741BA...
Ordering Codes Passport 4400 Introduction and Road Map Legacy Data Modules Ordering Code Description NTAU73AB 6-Port Legacy Data Module (LDM) NTAU71AB 6-Port Legacy Data Module with Token Ring NTAU77AB 8-port Legacy Data Expansion Module (LEM) NTA150AA LDM Memory Expansion Module (required on LDM when used with LEMs) Analog Voice / Fax Modules Ordering Code...
Passport 4400 Introduction and Road Map Ordering Codes User Manuals MICOM Ordering Code Description NTBQ67AA 4400 3.1 User Manuals in a Two-Binder Set (excluding Interworking Manuals) NTBQ72AA CD-ROM OF 4400 3.1 User Manuals (excluding Interworking Manuals) NTBQ88AA 4400 Interworking Manuals in a Binder...
Optional Modules The Passport 4400 base unit includes an Ethernet Base Module (EBM) installed in the first slot, Line Interface Module(LIM) A. The remaining slots (LIMs B, C, D, E) can house optional expansion or data modules as required. (The Passport 4450 has four optional module slots;...
Passport 4400 Introduction and Road Map Optional Modules Expansion Module Features To minimize speech bandwidth requirements, all voice modules use G.729 CS-ACELP. High quality voice channels are supported with as little as 8 kbps of bandwidth. Silence suppression technology allows the Passport 4400 to transmit voice only when someone is actually talking.
Optional Modules Passport 4400 Introduction and Road Map Universal Analog Voice Module with Interface Modules T1/E1 and Digital Voice Modules T1/E1 digital voice and data is supported on the Passport 4400 through the use of the modules and components described below: •...
Passport 4400 Introduction and Road Map Optional Modules E1 Voice Module (EVM) The E1 Voice Module provides a user interface to one or two 2.048 Mbps E1 lines. It can support a maximum of 30 Digital Voice Modules (six on the module, the rest on the Digital Voice Expansion Modules).
DVMs provides 30 voice channels. • If you are using a DVEM, ensure that you purchase and use the power harness (MICOM Oder Code PC-DC/ DVEM or Nortel PEC Code NTAU32AA). Stacking Connectors Rear Indicators (Back Panel)
Passport 4400 Introduction and Road Map Optional Modules ISDN BRI Voice Module The ISDN BRI Voice Module (IVM/1) is an expansion module providing the Passport 4400 with an ISDN interface for connection to an ISDN PBX, ISDN phone, or other ISDN protocol. Note: The ISDN BRI Voice Module will not operate with the Passport 4455.
Optional Modules Passport 4400 Introduction and Road Map Compatible Marathon Voice Modules The following lists the Marathon voice modules that can be used in the Passport 4400. Description Passport 4400 Module Marathon Equivalent T1 Voice Module (TVM)— NTAY99AA 5000TAM/1E, Rev M or later single channel T1 Voice Module (TVM)—...
Passport 4400 Introduction and Road Map Optional Modules High-speed Data Module (HDM) There are two versions of the High-speed Data Module (HDM), one with four ports and one with eight ports. The High-speed Data Module provides additional port capability, identical to port 1 on the Ethernet Base Module. The module supports RS-232, V.35, V.36, and X.21 interfaces, determined by the cable used.
Optional Modules Passport 4400 Introduction and Road Map Low-speed Data Service Modules Low-speed data service is provided through the Legacy Data Module (LDM). The LDM provides interface ports that support legacy data protocols in Passport 4400. Additional interface ports are supported through the use of the Legacy Data Expansion Module (LEM).
Road Map to the Product Documentation The following chart indicates which user document provides the information needed to perform various functions of the Passport 4400. ISDN Release InstallTool T1/E1/ Voice Notes Analog Digital Topic Hardware Module Startup Voice Voice Install (800- R3.1.0 Introduction...
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Passport 4400 Introduction and Road Map Road Map to the Product Documentation ISDN Release InstallTool T1/E1/ Voice Notes Analog Digital Topic Hardware Module Startup Voice Voice Install (800- R3.1.0 Introduction Guide Operators CLI Ref Module Module (800- 1942- (800- (800- (800- (800- (800-...
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Road Map to the Product Documentation Passport 4400 Introduction and Road Map ISDN Release InstallTool T1/E1/ Voice Notes Analog Digital Topic Hardware Module Startup Voice Voice Install (800- R3.1.0 Introduction Guide Operators CLI Ref Module Module (800- 1942- (800- (800- (800- (800- (800-...
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Passport 4400 Introduction and Road Map Road Map to the Product Documentation ISDN Release InstallTool T1/E1/ Voice Notes Analog Digital Topic Hardware Module Startup Voice Voice Install (800- R3.1.0 Introduction Guide Operators CLI Ref Module Module (800- 1942- (800- (800- (800- (800- (800-...
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Road Map to the Product Documentation Passport 4400 Introduction and Road Map ISDN Release InstallTool T1/E1/ Voice Notes Analog Digital Topic Hardware Module Startup Voice Voice Install (800- R3.1.0 Introduction Guide Operators CLI Ref Module Module (800- 1942- (800- (800- (800- (800- (800-...
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Passport 4400 Introduction and Road Map Road Map to the Product Documentation ISDN Release InstallTool T1/E1/ Voice Notes Analog Digital Topic Hardware Module Startup Voice Voice Install (800- R3.1.0 Introduction Guide Operators CLI Ref Module Module (800- 1942- (800- (800- (800- (800- (800-...
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Road Map to the Product Documentation Passport 4400 Introduction and Road Map ISDN Release InstallTool T1/E1/ Voice Notes Analog Digital Topic Hardware Module Startup Voice Voice Install (800- R3.1.0 Introduction Guide Operators CLI Ref Module Module (800- 1942- (800- (800- (800- (800- (800-...
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Passport 4400 Introduction and Road Map Road Map to the Product Documentation ISDN Release InstallTool T1/E1/ Voice Notes Analog Digital Topic Hardware Module Startup Voice Voice Install (800- R3.1.0 Introduction Guide Operators CLI Ref Module Module (800- 1942- (800- (800- (800- (800- (800-...
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Road Map to the Product Documentation Passport 4400 Introduction and Road Map ISDN Release InstallTool T1/E1/ Voice Notes Analog Digital Topic Hardware Module Startup Voice Voice Install (800- R3.1.0 Introduction Guide Operators CLI Ref Module Module (800- 1942- (800- (800- (800- (800- (800-...
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Passport 4400 Introduction and Road Map Road Map to the Product Documentation ISDN Release InstallTool T1/E1/ Voice Notes Analog Digital Topic Hardware Module Startup Voice Voice Install (800- R3.1.0 Introduction Guide Operators CLI Ref Module Module (800- 1942- (800- (800- (800- (800- (800-...
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Road Map to the Product Documentation Passport 4400 Introduction and Road Map ISDN Release InstallTool T1/E1/ Voice Notes Analog Digital Topic Hardware Module Startup Voice Voice Install (800- R3.1.0 Introduction Guide Operators CLI Ref Module Module (800- 1942- (800- (800- (800- (800- (800-...
The entire set of Passport 4400 product documentation—all manuals listed in the documentation road map chart above— can be obtained in one of the following manners. • For softcopy of the documentation in PDF format, access the Nortel Networks Web site at URL http://www3.nortelnetworks.com/product/ manuals/index.htm.
Master Table of Contents The following appendix lists the table of contents of all the manuals in the Passport 4400 documentation set. Passport 4400 Part Number ISDN BRI Manual 800-1942-31 Analog Voice Module Manual 800-1943-31 T1/E1 and Digital Voice Manual 800-1944-31 CLI Reference Manual 800-1950-31...
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Passport 4400 Introduction and Road Map Master Table of Contents bearer (B Channel) ..........3-3 directory .
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Master Table of Contents Passport 4400 Introduction and Road Map Call Negotiation..........4-22 Closed User Group .
Passport 4400 Introduction and Road Map Master Table of Contents Displaying the RSI Cache Contents ....... . 7-8 Displaying the RSI Defined Parameters .
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Master Table of Contents Passport 4400 Introduction and Road Map Configuration - 3 Command Line Interface Overview ........3-1 Using the Command Line Interface.
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Passport 4400 Introduction and Road Map Master Table of Contents Setting the RSI Parameters ......... . 5-7 Cache Status.
Master Table of Contents Passport 4400 Introduction and Road Map PBX Station or CENTREX PSTN Line Application Adjustments ....A-11 Single Line Telephone Application........A-15 Hybrid Key System Adjustment .
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Passport 4400 Introduction and Road Map Master Table of Contents Egress Table ........... . . 5-5 Call Forwarding and Digit Manipulation .
Master Table of Contents Passport 4400 Introduction and Road Map Digital Voice Module Level Adjustment Procedure - D Signal Flow ............D-1 Equipment Required .
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Passport 4400 Introduction and Road Map Master Table of Contents Client Timed Out ..........1-9 Client Failed .
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Master Table of Contents Passport 4400 Introduction and Road Map define fr ............3-2 define fr line network .
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Passport 4400 Introduction and Road Map Master Table of Contents delete filters ip ........... . 4-2 delete fr .
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Master Table of Contents Passport 4400 Introduction and Road Map set t1e1 ............5-13 set t1e1 ds0Connect .
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Passport 4400 Introduction and Road Map Master Table of Contents show bridge transparent parameters....... . 7-11 show bridge transparent port entry/table .
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Master Table of Contents Passport 4400 Introduction and Road Map show isdn............7-85 show isdn dialControl .
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Passport 4400 Introduction and Road Map Master Table of Contents show system statistics......... . . 7-127 show system system .
Master Table of Contents Passport 4400 Introduction and Road Map CLI Value Prompts - A string ............A-2 timeout .
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Passport 4400 Introduction and Road Map Master Table of Contents Ethernet Base Module - 3 Attaching Cables to the Ethernet Base Module ......3-3 Management Port .
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Master Table of Contents Passport 4400 Introduction and Road Map Use of Terminal Block ..........6-9 Terminal Block Connection .
Passport 4400 Introduction and Road Map Master Table of Contents Taking a Port Offline ..........10-10 Monitoring Passport 4400 System Parameters .
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Master Table of Contents Passport 4400 Introduction and Road Map Configuring a Direct Connection for Windows 95 ..... . 3-9 Configuring a Direct Connection for Windows NT.
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Passport 4400 Introduction and Road Map Master Table of Contents Requirements ..........5-10 Ethernet Connection .
Master Index The following master index lists all subjects indexed in each of the Passport 4400 user manuals. Each entry lists the subject, the manual(s) in which the subject is indexed, and the corresponding page number(s) containing information on the subject. The user manuals are referenced by the unique portion of their part number, e.g., [1943].
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Passport 4400 Introduction and Road Map Master Index AddressType [1950] 7-34 AddrResolveRetries [1950] 7-103 AddrResolveTimeOut [1950] 7-103 AddrResRequest [1950] 7-111 AdminStatus [1950] 3-15, [1950] 3-17, 7-65 AdmittedCUGs [1950] 7-40 Affidavit for Digital Services [1951] 1-11 [1950] 7-79 7-80 AgeMultiplier Agencies BABT [1942] iii, iv, [1951] vii, viii CSA [1942] iv, [1943] 2-1, [1944] 2, [1951] viii FCC [1942] iv, [1043] 2, [1950] 2, [1951] 4, 6, viii, [1983] 2...
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Glossary AB or ABCD Signalling bits associated with every digital voice channel. In T1 these bits are “robbed” from the least significant bit of every sixth voice sample. In a T1 extended superframe, A is obtained from frame 6, B from frame 12, C from frame 18, and D from frame 24.
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Passport 4400 Introduction and Road Map Glossary B8ZS A T1 zeros suppression technique, where an all-zeros byte is replaced with a code of 00011011, and each ones pair is transmitted with a bipolar violation. See HDB3. Bipolar A method of digital information transmission, where logical ones are coded both positively and negatively with respect to a zero base reference.
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Glossary Passport 4400 Introduction and Road Map CCS (Common Channel Signaling) A means of passing signaling information for multiple bearer channels over a single data link, using one of the DS0 time slots. In E1, time slot 16 carries the signaling information. In T1 time slot 24 is usually dedicated to signaling, but any one of the time slots may be configured for a that purpose.
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Passport 4400 Introduction and Road Map Glossary CFP1 (Control and Function Processor) A processor card that incorporates Passport 6400 functionality normally available on several function processors (FPs) and the control processor (CP). The CFP1 provides full CP functionality to manage and control Passport applications for system and network functions as well as four serial ports and two LAN ports for data switching.
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Glossary Passport 4400 Introduction and Road Map DCE (Data Circuit Equipment) The equipment at the network side of a subscriber link that provides both interface control and the means of digital transmission between user premises and the network switches. Diagnostic Digital Test See Internal Digital Test.
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Passport 4400 Introduction and Road Map Glossary Drop and Insert A process whereby DS0 channels received from one T1 or E1 interface are dropped within the T1 or E1 voice module and replaced with new information destined for the other T1 or E1 interface. Applies only to T1 or E1 voice modules with dual T1 or E1 ports.
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Glossary Passport 4400 Introduction and Road Map E1 Voice Module A T1 processing and switching device than can accommodate up to six digital voice modules. May have one or two T1 interface ports. E1 Frame A TDM sequence of 32 8-bit words, generated 8000 times a second. Of the 32 8-bit words, 30 are voice or data channels, one is a signaling channel, and one is a framing channel.
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Passport 4400 Introduction and Road Map Glossary External Line Loopback Test Also known as the Line Loopback test. Similar to the External Digital Loopback test, except that it does not test the unframing and framing circuits. FECN (Forward Explicit Congestion Notification) The FECN bit is used in the Frame Relay header of a frame to warn the receiving-end device that the frames it is receiving (traveling in the same direction) have encountered congestion or congested resources.
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Glossary Passport 4400 Introduction and Road Map HDLC Transparent Data Service (HTDS) A service that transports HDLC-framed data across the network without interpretation, except that interframe flags are not transmitted. The efficiency of the transmission is increased by not transmitting flags. HG (Hunt Group) Hunt groups are a group of network addresses (DNAs) reachable from a unique DNA and configured so that an incoming call automatically...
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Passport 4400 Introduction and Road Map Glossary IPX (Internetwork packet exchange) A proprietary network-layer data exchange protocol designed for Novel NetWare. ISDN (Integrated Services Digital Network) A digital technology which provides combined voice and data services. BRI access to an ISDN switch provides 2B+D (two 64 Kbit/s B-channels and one 16 Kbit/s D-channel) over an existing copper telephone line.
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Glossary Passport 4400 Introduction and Road Map MAC Filter A filter type based on source or destination MAC address. Measurement Interval (Tc) The time interval over which rates and burst sizes are measured. In general, its duration is proportional to the burstiness of the traffic. MIB (Management Information Base) A data base containing configuration and status information relating to a specific managed object or objects.
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Passport 4400 Introduction and Road Map Glossary PANL A Passport link support service designed to communicate with Passport 4400 access units. PANL includes proprietary protocol elements derived from ITU-T X.36 (Frame Relay) and signaling protocols (Q.922 and Q.933) to enhance the treatment of voice traffic over links shared with application data and enable secure signaling as a Frame Relay application.
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Glossary Passport 4400 Introduction and Road Map For physical interfaces, the PPA number corresponds to the physical port number on the module. For logical or virtual interfaces, the number corresponds to a logical port or interface and is dependent on the interface module type.
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Passport 4400 Introduction and Road Map Glossary SAP Filter SAP input filters allow a routing device to determine whether or not to accept information about a service. SAP output filters are applied prior to the routing device sending information out a specific interface. SDT (Single Dial Tone) A feature which allows users to dial a single number to reach a site accessed through multiple extensions.
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Glossary Passport 4400 Introduction and Road Map See Virtual Circuit. System Clock A configurable parameter for the clock source used in the T1 or E1 voice module. Options include the DSX-1 interface, the DS-1 interface (if dual port), and a clock generated internally within the T1 or E1 voice module. A North American standard for digital voice and data communication transmitted at the rate of 1.544 Mbps.
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Passport 4400 Introduction and Road Map Glossary UNI (User to Network Interface) The frame relay service is provided through a standard interface between the user device and the network, called the user-to-network interface. Virtual Circuit Provides the user with the equivalent of a physical connection to a destination address using shared facilities.
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Glossary Passport 4400 Introduction and Road Map Glossary-17...