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Paradyne NP 64 Plus User Manual

Frame relay digital service unit
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FrameSaver
®
NP 64+
Frame Relay
Digital Service Unit
User's Manual - Installation Guide
Pub. No. 980-001-0221C
March 2001
The information in this manual pertains
to Base Software Revision 10.04.XX

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Summary of Contents for Paradyne NP 64 Plus

  • Page 1 FrameSaver ® NP 64+ Frame Relay Digital Service Unit User’s Manual - Installation Guide Pub. No. 980-001-0221C March 2001 The information in this manual pertains to Base Software Revision 10.04.XX...
  • Page 3 TRADEMARKS FrameSaver is a registered trademark of Paradyne Corporation. All other products, systems, or services mentioned in this document are trademarks, service marks, registered trademarks or registered service marks of their respective owners. COPYRIGHT NOTICE © Copyright 1996-2001 Paradyne Corporation. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of the copyright owner.

  • Page 4: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS When using your FrameSaver NP 64+ equipment, basic safety precautions should always be fol- lowed to reduce the risk of fire, electric shock and injury to persons, including the following: Read and understand all instructions. Follow all warnings and instructions marked on the product. Unplug this product from the wall outlet before cleaning.

  • Page 5: Table Of Contents

    1 Preface About This Manual ..........1-1 Software Revision History .
  • Page 6 Table of Contents General Specifications ......... . 3-18 4 Operation Configuration .
  • Page 7 Table of Contents Alarms ............5-27 Fault Isolation .
  • Page 8 Table of Contents FrameSaver NP 64+ User’s Manual - Installation Guide 980-001-0221C March 2001...
  • Page 9 1 Preface None 2 Description Figure 2-1 Figure 2-2 Figure 2-3 Figure 2-4 Figure 2-5 Figure 2-6 Figure 2-7 Figure 2-8 Figure 2-9 Figure 2-10 Tunneled Management ....... 2-10 Figure 2-11 Payload / CPE Management .
  • Page 10 List of Figures Figure 5-3 Figure 5-4 Figure 5-5 Figure 5-6 Figure 5-7 Figure 5-8 Figure 5-9 Figure 5-10 PVC Statistics Summary Screen (Full Delay Mode) ..5-16 Figure 5-11 PVC Statistics History Screen ......5-17 Figure 5-12 Protocol Monitor Statistics Summary Screen .
  • Page 11 1 Preface Table 1-1 2 Description Table 2-1 3 Installation Table 3-1 Table 3-2 Table 3-3 Table 3-4 Table 3-5 Table 3-6 Table 3-7 Table 3-8 Table 3-9 Table 3-10 Table 3-11 Table 3-12 Table 3-13 Table 3-14 4 Operation Table 4-1 5 Diagnostics Table 5-1...
  • Page 12 List of Tables Appendix Table A-1 Table A-2 Table A-3 Table A-4 Table A-5 Table A-6 Table A-7 Table A-8 viii FrameSaver NP 64+ User’s Manual - Installation Guide DSU Fault ... A-2 DSU Loop ... A-2 Frame Mgr Fault ... A-3 ISDN Backup ...

  • Page 13: Preface

    1 Preface About This This manual provides basic installation, operation and troubleshooting information for the FrameSaver NP 64+ Frame Relay Digital Service Unit (FSU). The information is Manual directed to the installer who has a working knowledge of telecommunication systems and networks.

  • Page 14: Special Instructions

    1 Preface Special The following are to be performed by qualified service personnel ONLY. Instructions When installing FrameSaver NP 64+ equipment, observe the following precautions: 1. Never install telephone wiring during a lightning storm. 2. Never install telephone jacks in wet locations unless a jack is specifically designed for wet locations.

  • Page 15: Equipment Attachment Limitations

    Equipment Certain equipment attachment limitations apply when installing and operating this equipment. Attachment The limitations for use in Canada and the U.S. (FCC Part 68) are described below. Limitations Canadian NOTICE: The Industry Canada label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operational and safety requirements.

  • Page 16: Fcc Part 68 (U.s.)

    1 Preface FCC Part 68 This equipment complies with Part 68 of the FCC Rules. On the underside of this (U.S.) equipment is a label that contains, among other information, the FCC registration num- ber and Ringer Equivalence Number (REN) for this equipment. If requested, this in- formation must be provided to the telephone company.

  • Page 17: Software Revision History

    Software This manual pertains to FrameSaver NP 64+ Base Software Revision 10.04.xx. Revision changes for this and previous versions are listed below. Revision History Current This revision incorporates the following operational additions and/or changes: Revision Rev. 10.04.xx from Rev. 9.04.xx •...
  • Page 18 1 Preface Rev. 8.04.xx from Rev. 7.04.xx • • Download Notes Revision 8.04.xx software can be downloaded to a FrameSaver NP 64+ unit running Revision 7.04.xx without affecting the unit’s current configuration. Downloading to a prior revision will only affect the following configuration item. - PVCs that were included in the delay measurement list on the PVC Rev.
  • Page 19 1 Preface FrameSaver NP 64+ User’s Manual - Installation Guide 980-001-0221C March 2001...

  • Page 20: Description

    2 Description The FrameSaver NP 64+ Frame Relay Digital Service Unit (FSU) is a special purpose Digital Data Service CSU/DSU which provides management and diagnostic functions through Simple Network Management Protocol (SNMP) and other protocols, trans- ported over a Frame Relay network. It also includes an integral modem which supports access to the DSU as well as other co-located equipment such as routers.

  • Page 21: Isdn Adapter Option

    2 Description ISDN Adapter The FrameSaver NP 64+ can be factory-optioned to include an integral ISDN Adapter module. Option The ISDN adapter provides Backup for the DDS line and/or additional Bandwidth On- Demand. It also provides the integral Modem, B-Channel Dial-In/Dial-Out access (in addition to POTS Line access).

  • Page 22: Isdn Bandwidth On-Demand

    ISDN Bandwidth Bandwidth On-Demand provides an additional network connection for a second DTE On-Demand (router) port based on a request from the DTE. In this configuration the FrameSaver NP 64+ ISDN Adapter is protocol-transparent. The Router determines the protocol used. A typical network configuration showing the Bandwidth On-Demand connection is shown in Figure 2-3.

  • Page 23: Isdn Support For Dial Modem

    2 Description ISDN Support for FrameSaver NP 64+ allows one of the ISDN B-Channels to be used in analog mode to Dial Modem support Dial-In or Dial-Out on the internal modem. In this way a single 2B+D ISDN Line can provide 56/64 Kbps Backup, 56/64 Kbps Bandwidth On-Demand and Dial-In Dial-Out access to FrameSaver NP 64+ and two auxiliary devices.

  • Page 24: Second Dsu Option

    Second DSU The Second DSU option provides a second independent DDS interface with full frame relay capability. This dual DSU configuration can be used to provide additional net- Option work capacity to a second router port, or it can provide network redundancy at loca- tions where ISDN is not available.

  • Page 25: Automatic Switched Backup

    2 Description Automatic Figure 2-6 shows a configuration which can be used to back up the network frame Switched Backup switch, DDS line, or even the internal DSU. In this case, the CPE (router) is switched to the DSU which detects proper connectivity with its frame switch. The base DSU will be connected to the CPE unless it senses a communications failure, in which case the Second DSU Adapter module will be connected to the DTE port.

  • Page 26: Framesaver Np 64

    FrameSaver The basic FrameSaver NP 64+ includes a network compliant 56/64 Kbps CSU/DSU, a Frame Relay switch function, a Frame Relay management module, and an SNMP NP 64+ Agent. The unit includes two Auxiliary ports and may be factory-optioned to include an inter- nal V.34 or V.90-compliant modem.

  • Page 27: Power Control Unit Option

    2 Description Power Control The optional Model 467 Power Control Unit (PCU) provides a mechanism for reboo- ting an external device by momentarily interrupting its AC power source. Unit Option The PCU is a separate unit which consists of an AC power relay, relay control circuit, power transformer, and connectors/cables for: AC IN, SWITCHED AC OUT and Control/Power (marked “See User’s Manual”).

  • Page 28: Operating Features

    Operating This section contains operation information about the following: Features • • • • Management Management access for control sessions or to retrieve alarm status is provided to the FrameSaver NP 64+ via in-band Telnet, dial-in VT-100 console connection or direct- Access connected VT-100 terminal.

  • Page 29: Wan Dlci

    2 Description WAN DLCI The in-band Frame Relay Management Channel WAN address is defined by the DLCI (Data Link Connection Identifier). The WAN DLCI can be configured for a Dedicated PVC, or as a Tunneled channel within a Payload PVC. During initial installation the unit can be configured to automatically learn the WAN DLCI, or it can be set via the unit’s rear panel DLCI DIP Switch, Local Console Port or Dial-In Console Port.

  • Page 30: Figure 2-11 Payload / Cpe Management

    FrameSaver NP 64+ also provides expanded management access to the FSU through the following features: • • • These optional management paths are shown in Figure 2-11. Custom er Data Center Custom er Rou ter Fram e Relay Backbone M gm t NC C NC C Telnet W ork Station...
  • Page 31 2 Description With these features, NSP and/or customer management of the FSU can be accom- plished through three basic management modes: • • • 2-12 FrameSaver NP 64+ User’s Manual - Installation Guide The primary IP Address is associated with the network-facing dedicated PVC or Tunneled payload PVC.

  • Page 32: Wan Management Ip Address

    WAN Management FrameSaver NP 64+ utilizes one IP Address on the network-facing Wide Area Net- IP Address work (WAN) management channel. This address is imbedded within the various com- munications protocol stacks used for SNMP, Telnet and PPP. The Unit’s WAN Management IP Address may be automatically learned from the first message received on the management PVC, or it can be set via the local or remote Console Port.

  • Page 33: Software Download

    2 Description Software The FrameSaver NP 64+ system software is stored in flash memory. A new version of the software can be downloaded to the unit for software upgrade, or for restoration in Download the event an error is detected in the flash storage. A description of the download process is provided in section 5 Diagnostics of this man- ual.

  • Page 34: Modem & Call Director

    Modem & The integral on-board modem can be switched to any one of the interfaces of the FrameSaver NP 64+ by the call director. The call director connects the modem to the Call Director Base Card, Option Module (ISDN or Second DSU), AUX 1 Port, or AUX 2 Port. In this way, the modem is used for out-of-band trap reporting (FrameSaver NP 64+ Base Card, Option Module or DTE device connected to an AUX Port) and accepts in- coming calls for management access of the FrameSaver NP 64+, DTE device or any...
  • Page 35 2 Description 2-16 FrameSaver NP 64+ User’s Manual - Installation Guide 980-001-0221C March 2001...

  • Page 36: Installation

    3 Installation This section contains information to complete the physical installation of a FrameSav- er NP 64+ which includes: mounting the unit, power connection and input/output con- nections. FrameSaver NP 64+ comes equipped with rubber feet for table or shelf-top placement, Mounting and has keyholes molded into its base for wall mounting.

  • Page 37: Figure 3-1 Mark Wall Location

    3 Installation C. Attach the fasteners to the wall leaving sufficient space (0.3 inches) between the bottom of the fastener head and the wall to allow the fastener head to pass into the keyhole opening in the base of the unit. D.

  • Page 38: Figure 3-3 Mounting Optional Power Control Unit

    Mounting The optional Power Control Unit may be wall-mounted using the four keyhole mounts provided on its base (refer to Figure 3-3). Optional Model 467 Power Control Unit Keyhole M ounts NOTE: Use wall fasteners appropriate for the wall’s surface material, i.e. wood The Power Control Unit may also be placed or mounted on a table-top, shelf, or floor near the FrameSaver NP 64+.

  • Page 39: Connections

    3 Installation Connections FrameSaver NP 64+ has connectors on the rear panel for power and input/output con- nections. Rear panel connectors and controls are shown and described in Figure 3-4 and Table 3-1. D IG ITS S EE x100 U SE R S 1 2 3 4 5 6 7 8 9 10 11 12 M AN U AL P O W ER...

  • Page 40: Power Connections

    Power Power is supplied to a FrameSaver NP 64+ by the AC Power Pack shipped with each unit, or by an optional Model 467 Power Control Unit. Connections AC Power Pack FrameSaver NP 64+ is shipped with an AC Power Pack (transformer/plug module) Connection with power cord.

  • Page 41: Figure 3-6 Power Control Unit Connections

    3 Installation Optional NP 467 If the FrameSaver NP 64+ installation includes an optional NP 467 Power Control Unit Power Control Unit (PCU), the Power Pack unit described above will NOT be used. Power for the Frame- Saver NP 64+ will be supplied by the Power Control Unit. Connection Connections to the Power Control Unit are made as follows: A.

  • Page 42: Power On, Self-Test

    Power On, 1. Verify that the proper voltage is present at the outlet to be used (refer to Table 3-12 Self-Test or Table 3-13 in General Specifications at the end of this section of this manual). If the outlet voltage is correct, plug the Power Pack or Power Control Unit AC IN plug into the AC outlet.
  • Page 43 3 Installation NOTE: The FrameSaver NP 64+ does not have a Power ON/OFF switch. NOTE: To remove power from the FrameSaver NP 64+, press down on the locking latch at the top of the power connector and pull the connector straight out. Do not pull on the cord.

  • Page 44: Input/Output Connections

    Input/Output Basic FrameSaver NP 64+ has input/output connectors for the DDS facility, Data Port (DTE), two AUX ports, and Modem Line. Pinouts for each of these ports are provided Connections in the tables that follow. NOTE: Refer to Section 6, “Options” of this manual for a description of additional connectors with options such as the ISDN Adapter or Second DSU.

  • Page 45: Data Port Pinout

    3 Installation Data Port Pinout Table 3-3 shows the pinout for the Data Port connector. Table 3-4 through Table 3-8 show the pin connections for the adapter cables for each of the interface types. NOTES: *CBC = Cable Code pin. (s) = single ended.

  • Page 46: Itu-V.35 Adapter Cable

    ITU-V.35 Adapter Use cable assembly # 135-001-0400, or per pinout shown in Table 3-4. Cable Table 3-4 ITU-V.35 Interface Adapter Cable (CBC=1) M-34F DB-44M Signal Shield Sig. Gnd. RTS(s) CTS(s) DSR(s) DCD(s) DTR(s) TD-A RD-A TD-B RD-B NOTES: *CBC = Cable Code pin. (s) = single ended.

  • Page 47: Adapter Cable

    3 Installation EIA-530 Adapter Use cable assembly # 135-002-0400, or per pinout shown in Table 3-5. Cable Table 3-5 EIA-530 Interface Adapter Cable (CBC=2) DB-25F DB-44M Signal Shield TD-A RD-A RTS-A CTS-A DSR-A Sig. Gnd. DCD-A RC-B DCD-B TC-B CTS-B NOTES: *CBC = Cable Code pin.

  • Page 48: Eia-530-A Adapter Cable

    EIA-530-A Adapter Use cable assembly # 135-003-0400, or per pinout shown in Table 3-6. Cable Table 3-6 EIA-530-A Interface Adapter Cable (CBC=3) DB-25F DB-44M Signal Shield TD-A RD-A RTS-A CTS-A DSR(s) Sig. Gnd. DCD-A RC-B DCD-B TC-B CTS-B NOTES: *CBC = Cable Code pin. (s) = single ended.

  • Page 49: Itu-X.21-Ns Adapter Cable

    3 Installation ITU-X.21-NS Use cable assembly # 135-005-0400, or per pinout shown in Table 3-7. Adapter Cable ITU-X.21-NS (NS indicates Non-Switched) Table 3-7 ITU-X.21-NS Interface Adapter Cable (CBC=4) DB-15F DB-44M Signal Shield TD-A Control-A RD-A Indication-A TC-A Sig. Gnd. NOTES: *CBC = Cable Code pin. (s) = single ended.

  • Page 50: Adapter Cable

    EIA-232 Adapter Use cable assembly # 135-000-0400, or per pinouts shown in Table 3-8. Cable Table 3-8 EIA-232 Interface Adapter Cable (CBC=0) DB-25F DB-44M Signal Shield TD(s) RD(s) RTS(s) CTS(s) DSR(s) Sig. Gnd. DCD(s) NOTES: *CBC = Cable Code pin. (s) = single ended.

  • Page 51: Table 3-9 Aux 1 Pinout, 8 Pin Modular Connector

    3 Installation AUX 1 & AUX 2 For AUX Port to Console connections, use cable assembly # 135-008-0400 for modu- Connections lar to DB25, or # 135-990-0006 for modular to Cisco* router console, or per AUX 1 and AUX 2 Port pinouts are shown in Table 3-9 and Table 3-10. A U X C o n n .

  • Page 52: Console & Alarm Contact Cabling

    Console & Alarm In Console Mode, the AUX 2 port is configured as a VT-100 interface, 9.6Kbps, asyn- Contact Cabling chronous, 8 data bits, one start bit, one stop bit, and no parity. The Console Mode is enabled on the AUX 2 port when the “Console” Pin (#5) on the AUX 2 connector is asserted (connect the Console pin to the terminal’s DTR).

  • Page 53: General Specifications

    3 Installation General Specifications FrameSaver NP 64+ Specifications Table 3-12 FrameSaver NP 64+ General Specifications Item Dimensions FrameSaver NP 64+, basic unit: Weight As normally packaged including carton and accessories: 5 lbs. Operating Range Temperature: 0 to 50 degrees C. operating. Relative Humidity: 5 to 95% non-condensing.

  • Page 54: Power Control Unit Specifications

    Power Control Unit Specifications Table 3-13 Model 467 Power Control Unit General Specifications Item Dimensions 2.5" H x 7.25" W x 4.6"D Weight As packaged including carton: 4.5 lbs. Unit alone: 3.5 lbs. Operating Range Temperature: 0 to 50 degrees C. operating. Relative Humidity: 5 to 95% non-condensing.

  • Page 55: Table 3-14 Cisco Hd-60M To Framesaver Np 64+ Hd-44M

    3 Installation Cisco* HD-60 To connect a Cisco router to a FrameSaver NP 64+ Data Port configured for ITU-V.35, use cable assembly # 135-006-0400, or per pinout shown in Table 3-14. Adapter Cable Specifications Cisco HD-60M Shield NOTES: * Cisco is a registered trademark of Cisco Systems, Inc. 3-20 FrameSaver NP 64+ User’s Manual - Installation Guide Table 3-14 Cisco HD-60M to FrameSaver NP 64+ HD-44M...

  • Page 56: Operation

    4 Operation This section contains configuration and operation information for basic FrameSaver NP 64+. Refer to Section 6, “Options” of this manual for configuration and operation information for FrameSaver NP 64+ options such as ISDN Adapter. Configuration FrameSaver NP 64+ configuration consists of initially setting the WAN Management Channel’s DLCI address via the rear panel DIP Switches, dial-in VT-100 console con- nection or direct connected VT-100 terminal.

  • Page 57: Table 4-1 Bcd Dip Switch Settings

    4 Operation The WAN DLCI can be set for Dedicated or Tunneled mode using the DIP Switches. To enter a dedicated WAN DLCI, set the DIP Switches for the desired DLCI value as described above and proceed to the Power On section on page 4-3 to clear the unit’s NVM.

  • Page 58: Power On

    Power On With all the connections completed and the WAN DLCI DIP Switches set, the Frame- Saver NP 64+ is ready to be powered on. Proceed by holding in the recessed push button switch labeled “NVM RESET / CON- FIG” on the unit’s rear panel while plugging in the power connector and continue to hold the button for approximately 10 seconds.

  • Page 59: Establish Management Session

    4 Operation Establish The FrameSaver NP 64+ sends a Startup/Login Prompt when a management connec- tion has been established (in-band Telnet, dial-in VT-100 console connection or direct Management connected VT-100 terminal), provided that another management session is not current- Session ly in use.

  • Page 60: Block Mode

    Block Mode FrameSaver NP 64+ supports Block as well as Character mode management access. To enable Block mode, set the VT-100 terminal (or emulator) to “LOCAL ECHO.” When logging in, along with entering the password, type “\VT100” (include a space between the last character of the password and the “\”...
  • Page 61 4 Operation This page intentionally left blank. FrameSaver NP 64+ User’s Manual - Installation Guide 980-001-0221C March 2001...

  • Page 62: Management Command Flow

    Management Figure 4-2 shows the general flow for management access for the basic FrameSaver Command Flow NP 64+. It shows each of the screen displays and the general function for that screen. - LO G O UT - - S YS TE M VIEW - Login Prom pt or Logout / AutoUpdate In Use...

  • Page 63: Parameter Setting

    4 Operation Parameter Upon successful login, the System View screen is displayed. Setting The System View screen presents an overview of the system status and provides the path to configuration, test, and other status screens. ************************ FrameSaver NP 64 - System View ************************ Name: F@43802 Location: Fair Lawn, N.J.
  • Page 64 DSU Status - Modem Status - Aux Port Status - High Speed Interface Status - Commands: DsuConfig [DC] - Advances to DSU Configuration Screen. FrameConfig [FC] - Advances to Frame Manager Configuration Screen. PvcConfig [PC] - Advances to PVC Performance Configuration Screen. MonConfig[MC] - Advances to Protocol Monitor Configuration Screen.

  • Page 65: Dsu Configuration

    4 Operation DSU Configuration The DSU Configuration screen allows you to view and alter parameters for the DSU and Modem. The DSU Configuration screen is shown in Figure 4-4. ******************************* DSU Configuration ****************************** Name [N=]: F@43802 Location [L=]: Fair Lawn, N.J. Contact [C=]: J.

  • Page 66: Modem Setup

    DataRate must be set to the actual rate (56 or 64 Kbps) when FRM MGR is set for “ClrChan” and/or LMI Protocol is set for “None”. Auto should NOT be used for these configurations. 5. Enter WAN IP Address for SNMP management of the FrameSaver NP 64+. If set to the default value as shown in Figure 4-4, the IP Address will be learned automatically.
  • Page 67 4 Operation Parity - “N” (None), “E” (Even), or “O” (Odd) Data Bits - “8” (8 data bits), or “7” (7 data bits) Default is shown in Figure 4-4: 9600bps, 8 data bits, no parity, no flow control. NOTES: 5. AUX 2 Setup - Functions the same as for AUX 1 above, with the additional Operating Mode of “CS”...
  • Page 68 MTU Size - Sets the maximum size (Maximum Transmit Unit) for any IP packet sent by the unit via any management route (dedicated, backup, or PPP dial session.) Pref- ace the number to be entered for size with “V” if the user traffic is known to include Voice over IP.

  • Page 69: Frame Manager Configuration

    4 Operation Frame Manager The Frame Manager Configuration screen allows you to view and alter parameters for Configuration Frame Manager operations. The Frame Manager Configuration screen is shown in Figure 4-5. ************************** Frame Manager Configuration ************************* Name: F@43802 WAN Mgmt DLCI [D=#,T#orD#]: Disabled P/C Mgmt DLCI [E=P#orC#]: Disabled X to Disable or 16 thru 991 ------------- Network ------------...
  • Page 70 3. LMI Protocol - Displays and allows the selection of the LMI protocol used. If set to “None,” LMI traffic (if any) to or from the Network will be passed through the FrameSaver NP 64+ unaffected, and the unit’s LMI alarms and status will be cleared.
  • Page 71 4 Operation 6. Link Err Threshold - Disables or sets the threshold of Data Frame Error Seconds which when reached or exceeded will cause an alarm to be declared. Set independently for Network and User sides. Commands Help [?] - Advances to “Help” for Frame Manager Configuration screen. Save [SA] - Saves parameters and returns to System View screen.

  • Page 72: Snmp Community Access Configuration

    SNMP Community The SNMP Community Access Configuration screen allows you to view and alter pa- Access rameters for SNMP Community operations. Configuration The SNMP Community Access Configuration screen is shown in Figure 4-6. ********************** SNMP Community Access Configuration ********************* Name: F@43802 Community #1 Name [C1=]: public Community #2 Name [C2=]: Community #3 Name [C3=]:...

  • Page 73: Snmp Trap Manager Configuration

    4 Operation SNMP Trap The SNMP Trap Manager Configuration screen allows you to view and alter parame- Manager ters for SNMP Trap Manager related operations. Configuration The SNMP Trap Manager Configuration screen is shown in Figure 4-7. *********************** SNMP Trap Manager Configuration ************************ Name: F@43802 Mgr ------ IP Address ----- ---------------- Name ---------------- ---- Path --- #1 [T1=]:0.0.0.0...
  • Page 74 Path - Selects WAN (W) or Payload/CPE (P) as the management path for sending 2. Disable Traps - Selects Traps to be disabled. Can be selected individually, in a range, or group. Selected (disabled) items are bracketed by “>>”...“<<” characters as shown in Figure 4-7, item #1. NOTE: Trap descriptions are provided in the Diagnostics sections of this manual.

  • Page 75: Pvc Performance Configuration

    4 Operation PVC Performance The PVC Performance Configuration screen allows you to view and alter parameters Configuration for Network Delay, Bandwidth utilization, and congestion measurement operations. The PVC Performance Configuration screen is shown in Figure 4-8. ************************* PVC Performance Configuration ************************ Name: F@43802 Desired Delay Mon Rate [R=#]: 10 X to Disable or 1 thru 240 Seconds...
  • Page 76 Desired Loss Mon Rate - Setting for the rate at which a Loss measurement packet (Packet-Counting packet) is injected on each PVC in the list specified at the bottom of this screen. Default value (60) dictates that within each 60-second period, every PVC in the list is measured once.
  • Page 77 4 Operation 10. Auto & Manual - Specifies the Tx and Rx CIR value and Mon (monitoring packet(s)) type to be used when PVCs are added to the statistics list. Valid CIR values are 0 through 64, default value is zero. Auto - When a non-configured PVC is detected, the indicated settings are used un- Manual - For PVCs manually added (using the AddPVC command), the param- Mon - Selects the Monitor setting for PVCs added automatically and manually.

  • Page 78: Protocol Monitor Configuration

    Protocol Monitor The Protocol Monitor Configuration Screen allows you to view and alter parameters Configuration for Protocol Monitor and Top IP Traffic collection operations. The Protocol Monitor Configuration Screen is shown in Figure 4-9. ************************ Protocol Monitor Configuration ************************ Name: F@43802 Protocols [P=] ([P=m,n,...r] and/or [P=m-n] for up to 7 selections) >>...
  • Page 79 4 Operation 3. Rank Top Stats By - Selection determines whether the Top IP Traffic collection will be ranked by IP traffic with the highest Packet counts or IP traffic with the highest Octet counts. Commands: Help [?] - Advances to “Help” for Protocol Monitor Configuration screen. Save [SA] - Saves parameters and returns to System View screen.

  • Page 80: Configuration Completed

    Configuration The basic FrameSaver NP 64+ initial configuration is now completed. Completed If the unit is not optionally equipped, such as with an ISDN Adapter, or the option fea- ture will not be used at this time, then proceed to the next section of this manual, Test Installation.

  • Page 81: Test Installation

    4 Operation Test The final step of the FrameSaver NP 64+ installation is to verify operations. This is done through the Network Control Center (NCC). Installation 1. Contact the Network Control Center and inform the Operator that the physical installation and initial configuration are completed. 2.

  • Page 82: Diagnostics

    5 Diagnostics This section contains general diagnostic information for basic FrameSaver NP 64+. Refer to Section 6, “Options” of this manual for additional diagnostic information regarding optional features such as the ISDN Adapter or Second DSU. FrameSaver NP 64+ diagnostic features include; Front Panel LED Indicators, BER Testing, Statistic gathering and reporting, and Alarm reporting.

  • Page 83: Table 5-1 Framesaver Np 64+ Front Panel Indicators

    5 Diagnostics Nomenclature POWER Green LED READY Green LED DDS ALARM Red LED NETW LMI Green LED USER LMI Green LED HS PORT TxD Green LED HS PORT RxD Green LED FR MGMT. Green LED MODEM IN USE Green LED *See Software Download at the end of this section for description.

  • Page 84: Testing

    Testing FrameSaver NP 64+ provides management access diagnostic test support. Diagnostic Test FrameSaver NP 64+ supports diagnostic loopback testing and can source a BER Test directed toward the DDS circuit or toward the DTE. Support A block diagram of the test paths within the FrameSaver NP 64+ is shown in Figure 5-2.

  • Page 85: Dsu Tests

    5 Diagnostics DSU Tests The DSU Test screen provides base card status and access to DSU tests. The DSU Test screen is shown in Figure 5-3. *********************************** DSU Test *********************************** Name: F@43802 DSU Fault: DSU Loop: Test Mode [T=] 1) Clear >>2) BERT to Netw<<...
  • Page 86 Loop to User - Loops data back to High Speed Interface Port. Loop to Netw - Loops data back to Network. NOTES: 1. PVC tests will prompt for the input of a PVC DLCI destination. 2. “Test Pkts to Netw” delay values may not correlate to values displayed on the PVC Statistics Screens because the Link Test Packet size (40 - 1590 octets) is larger than the Delay measurement packet (36 octets).

  • Page 87: Figure 5-4 Auto Update Screen Change

    5 Diagnostics Additional commands on this screen are: AutoUpdate [AU] - Provides automatic screen update and refresh (every five sec- onds) of all status and Test (when active) results. No changes can be made while in this mode, and the bottom lines on the screen are replaced as shown in Figure 5-4. AutoUpdate is exited by pressing ENTER.
  • Page 88 5 Diagnostics This page intentionally left blank. 980-001-0221C FrameSaver NP 64+ User’s Manual - Installation Guide March 2001...

  • Page 89: Statistics

    5 Diagnostics Statistics FrameSaver NP 64+ provides current and historical performance statistics for the fol- lowing: • • • DSU and Frame Manager statistics are accumulated in 15-minute intervals for the last 24 hours. PVC, Protocol monitoring, and Top IP Traffic statistics are accumulated in user-defined intervals (1 - 15 minutes).
  • Page 90 High Speed Interface Status - Current Interval Count - Displays the number of seconds that have elapsed in the current 15-minute interval. 24 Hour Interval Count - Displays the number of 15-minute intervals that have been accumulated since the last reset of the counters (max. 96). DSU (heading) - The following DSU parameters are displayed: RLOS: Receive Loss of Signal (carrier loss) - Count of seconds during which OOS: Out of Service - Count of seconds during which DSU detects Out of...

  • Page 91: Dsu Statistics History

    5 Diagnostics DSU Statistics The DSU Statistics History screen displays all performance parameters for the DSU and Frame Relay Traffic for each of the 96 possible, 15-minute intervals. History The first history screen (1 of up to 6) is accessed by selecting ViewHistory [VH] from the DSU Statistics Summary screen.
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  • Page 93: Figure 5-7 Pvc Statistics Summary Screen (Packet & Octet Mode)

    5 Diagnostics PVC Statistics The PVC Statistics Summary screen provides summary performance information and access to detailed performance history displays for the Frame Relay traffic on a per- Summary PVC basis. The PVC Statistics Summary screen is shown in Figure 5-7. **************************** PVC Statistics Summary **************************** Name: F@43802 (P=Pkt&Oct,TC=TxCir,RC=RxCir,TL=TxLoss,RL=RxLoss,FD=FullDlay,orND=NetwDlay)
  • Page 94 RxPkts & TxPkts - Count of packets received (Rx) and count of packets sent (Tx). NOTE: Measurement Packets (Delay, Loss, & Link Test) are included in the RxPkts and TxPkts counts of the FrameSaver NP originating the packets. Measurement packets are included only in the RxPkts count of a FrameSaver NP looping (receiving and returning) Measurement Packets.

  • Page 95: Pvc Statistics Summary

    5 Diagnostics TxCir & RxCir The TxCir Mode screen display is shown in Figure 5-8. Modes **************************** PVC Statistics Summary **************************** Name: F243802 (P=Pkt&Oct,TC=TxCir,RC=RxCir,TL=TxLoss,RL=RxLoss,FD=FullDlay,orND=NetwDlay) FirstDLCI[P=#]: 16 DLCI |1-25 | -35 | -50 | -71 | -100| -141| >141%(ofCIR) 100.0 100.0 100.0 100.0 100.0...

  • Page 96: Txloss & Rxloss Modes

    TxLoss & RxLoss TxLoss Mode screen display is shown in Figure 5-9. Modes **************************** PVC Statistics Summary **************************** Name: F243802 (P=Pkt&Oct,TC=TxCir,RC=RxCir,TL=TxLoss,RL=RxLoss,FD=FullDlay,orND=NetwDlay) FirstDLCI[P=#]: 16 DLCI NonDEPkts/-DEPkts-/Sta 25 Origin: NNI-1: 33 Origin: 234 Origin: 341 Origin: 464 Origin: 531 Origin: 793 Origin: 795 Origin: 942 Origin: -- 15 Min Interval History: 96 Valid -- Past Summary for DLCI [D=#orSum]:...

  • Page 97: Fulldlay & Netwdlay Modes

    5 Diagnostics FullDlay & Full Delay screen display is shown in Figure 5-10. NetwDlay Modes **************************** PVC Statistics Summary **************************** Name: F@243802 (P=Pkt&Oct,TC=TxCir,RC=RxCir,TL=TxLoss,RL=RxLoss,FD=FullDlay,orND=NetwDlay) FirstDLCI[P=#]: 16 DLCI Delay(mS): Delay(mS): Delay(mS): Delay(mS): Delay(mS): Delay(mS): Delay(mS): Delay(mS): Delay(mS): -- 15 Min Interval History: 96 Valid -- Past Summary for DLCI [D=#orSum]: LastPkt: Delay(mS): History:...

  • Page 98: Pvc Statistics History

    PVC Statistics The PVC Statistics History screen displays performance parameters for Frame Relay Traffic for each of the 96 possible intervals on a per-PVC basis. History The first history screen is accessed by selecting ViewHistory [VH] from the PVC Sta- tistics Summary screen.
  • Page 99 5 Diagnostics DLCI [D=#,All,or Sum] - selects the PVC(s) for which the historical statistics will be produced. Choices are: Specific PVC or “Etc”- Enter DLCI number for the desired PVC (or “Etc”). Pro- All PVCs - Enter All (or only “A”). Displays a listing by intervals providing an in- Sum - Enter Sum (or only “S”).

  • Page 100: Protocol Monitor Statistics Summary

    Protocol The Protocol Monitor Statistics Summary screen displays summary performance in- formation and provides access to detailed performance information for the Frame Re- Monitor lay Traffic for each protocol specified. Statistics The Protocol Monitor Statistics Summary screen is accessed from the System View Summary screen, selecting [MS] by typing “MS”...
  • Page 101 5 Diagnostics Additional commands on this screen are: ResetStats [RS] - Clears all Protocol Monitoring and PVC Monitoring statistics ViewHistory [VH current_time (optional)] - Advances to Page 1 of the Protocol Monitor Statistics History screen. The “current_time” optional parameter causes the history interval count to reflect the actual time-of-day rather than a simple count of intervals.

  • Page 102: Protocol Monitor Statistics History

    Protocol The Protocol Monitor Statistics History screen displays all performance parameters for the Frame Relay Traffic on a per-interval basis for each of the 96 possible intervals for Monitor each protocol specified. Statistics The first history screen is accessed by selecting ViewHistory [VH] from the Protocol History Monitor Statistics Summary screen.

  • Page 103: Figure 5-14 Tx Conversation Mode, Ranked By Octet

    5 Diagnostics Top Talker/ The Top Talker/Conversation Statistics Summary screen displays summary perfor- mance information and provides access to detailed performance information for the Conversation Top IP Traffic irrespective of PVC divisions. Statistics The Top Talker/Conversation Statistics Summary screen is accessed from the System Summary View screen, selecting [TS] by typing “TS”...
  • Page 104 Rank - Number 1 to 6, showing the rank (with 1 being the highest) the line of statistics holds compared to other talkers/conversations. For Rank by Octet, the following are displayed: Bps - The displayed Bps is calculated from the total count of Octets for the Octets - Count of bytes within packets for that particular talker/conversation.

  • Page 105: Top Talker/Conversation Statistics Summary

    5 Diagnostics Rx Conversation An example of a Top Talker/Conversation Statistics Summary screen, in Rx Conver- Mode sation mode ranked by Octet, is shown in Figure 5-15. ***************** Top Talker / Conversation Statistics Summary ***************** Name: F243802 -------------- Most Recent Completed Interval -------------- Rank ResetStats[RS] Help[?]...

  • Page 106: Rx Listener Mode

    Rx Listener Mode An example of a Top Talker/Conversation Statistics Summary screen, in Rx Listener mode ranked by Packet, is shown in Figure 5-16. ***************** Top Talker / Conversation Statistics Summary ***************** Name: F243802 -------------- Most Recent Completed Interval -------------- Rank ResetStats[RS] Help[?]...

  • Page 107: Top Talker/Conversation Statistics History

    5 Diagnostics Top Talker/ The Top Talker/Conversation Statistics History screen displays detailed performance information for the Top Talker/Conversation of IP Traffic irrespective of PVC divi- Conversation sions. Statistics The Top Talker/Conversation Statistics History screen is accessed from the Top Talk- History er/Conversation Statistics Summary screen, selecting [VH] by typing “VH”...

  • Page 108: Alarms

    Alarms FrameSaver NP 64+ generates “traps” (SNMP alarms or alerts) in response to certain detected network conditions. (In the case of FrameSaver NP 64+ with dual DSUs, each DSU generates Traps). The traps are reported either In-band utilizing the Management PVC, or via Dial-Out utilizing the internal Modem.

  • Page 109: Fault Isolation

    5 Diagnostics Fault Isolation Figure 5-18 shows a typical application with potential fault locations marked ( a ) through ( i ). Table 5-3 describes the corresponding indications, reporting mecha- nisms including the traps for each fault, and suggested test options. F ram e S w itc h (g )

  • Page 110: Led Indicator Troubleshooting

    LED Indicator The FrameSaver NP 64+ front panel LED indicators may also be used to troubleshoot a problem. Table 5-4 describes the Base unit LED indicator’s normal states, and some Troubleshoot- possible causes for abnormal indications. Table 5-4 FrameSaver NP 64+ Base Unit LED Diagnostics FrameSaver NP 64+ LED Status NETW USER...

  • Page 111: Additional Descriptions

    5 Diagnostics Additional The paragraphs in this section provide additional information, notes, or tips about some of the specific operating features of the FrameSaver NP 64+. Descriptions This information is intended to assist anyone in the use of these features or in trouble- shooting problems concerning these features.

  • Page 112: Dte Dialing Using Aux Ports & Internal Modem

    DTE Dialing In addition to the internal DSU and Option cards, the FrameSaver NP 64+’s internal modem may be shared by external devices, which interface the FrameSaver NP 64+ Using AUX through AUX ports 1 and 2. The modem sharing process is controlled by the DTR lead Ports &...

  • Page 113: Management Access

    5 Diagnostics Management Access Dial-In When using a PC (desktop or laptop) to establish management access to a FrameSaver NP 64+, ensure that the VT-100 configuration is set to use flow control, and that the BAUD rate does not exceed 57600 (56Kbps). Some emulation programs will automatically configure to the highest rates available (such as 115200), and this may cause the dropping of characters while FrameSaver NP is returning a screen to the PC terminal.

  • Page 114: Options

    6 Options This section contains installation, operation and diagnostic information specific to fac- tory Options which are available with FrameSaver NP 64+ units. The Options currently available and covered in this manual are: • • 980-001-0221C FrameSaver NP 64+ User’s Manual - Installation Guide March 2001 ISDN Adapter Option Second DSU Option...
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  • Page 116: Isdn Adapter Option

    ISDN Adapter This section contains installation, operation and diagnostic information specific to the ISDN Adapter option for FrameSaver NP 64+. Option The front panel of FrameSaver NP 64+ with ISDN Adapter option is shown in Figure 6-1. Figure 6-1 FrameSaver NP 64+ Front Panel with ISDN Adapter Installation Installation for the ISDN portion of FrameSaver NP 64+ consists of making the Data Port and ISDN Line connections.

  • Page 117: Isdn Data Port Connection

    ISDN Adapter Option FrameSaver NP 64+ ISDN connectors are described in Table 6-1. Table 6-1 FrameSaver NP 64+ ISDN Input/Output Connectors and Specifications Connectors ISDN Data Port ISDN Line ISDN Data Port The ISDN Data Port supports the same electrical interface types as the base unit Data Connection Port (except for ITU-X.21-NS), and the connector pinouts are also identical.

  • Page 118: Isdn Configuration

    ISDN With the ISDN connections and base unit connections completed, the FrameSaver NP 64+ is ready to be powered on and the ISDN Adapter configured for operation. Configuration Power On with With all connections completed, the FrameSaver NP 64+ with ISDN will complete its Connections power-on self-test sequence with front panel LED indications as follows: Completed...

  • Page 119: Establish Management Session

    ISDN Adapter Option Establish The FrameSaver NP 64+ sends a Startup/Login Prompt when a management connec- Management tion has been established (in-band Telnet, dial-in VT-100 console connection or direct connected VT-100 terminal), provided that another management session is not current- Session ly in use.

  • Page 120: Figure 6-3 Management Control Flow For Framesaver Np 64+ With

    Management Figure 6-3 shows the general flow for management access for FrameSaver NP 64+ Command Flow with the ISDN Option. It shows the screen displays and the general function for that screen. The ISDN related screens are at the bottom of the flow chart. - LO G O U T - - S Y S TE M V IE W - L og in P ro m pt o r...

  • Page 121: Isdn Parameter Setting

    ISDN Adapter Option ISDN Parameter This section describes the additional screens and parameters used to configure the ISDN Adapter option. There are also some field changes on the System View Screen Setting specific to the ISDN Adapter option. The ISDN configuration screens are; ISDN Adapter Configuration Screen and the Backup/On-Demand Configuration Screen.
  • Page 122 ISDN Backup - State as reported by ISDN Adapter Card. On-Demand Interface Status - If the ISDN Adapter is not configured for ISDN Commands: IsdnConfig [IC] - Advances to ISDN Adapter Configuration Screen. BkupConfig [BC] - Advances to Backup / On-Demand Configuration Screen. IsdnTest [IT] - Advances to ISDN Status / Test Screen.

  • Page 123: Isdn Adapter Configuration

    ISDN Adapter Option ISDN Adapter The ISDN Adapter Configuration screen allows you to view and alter parameters for Configuration the ISDN Adapter related operations. The ISDN Adapter Configuration screen is shown in Figure 6-5. ************************** ISDN Adapter Configuration ************************** Name: F@43802 B1/B2 Mode [M=] >>1) Backup/unused<<...
  • Page 124 Data Rate - Selects the synchronous data rate to be used for all data connections. NOTE: 64+ Kbps ISDN service is not consistently available from all Telcos. Modem Line - Selects the quality of the line expected from Telco, when the modem places a call.

  • Page 125: Backup / On-Demand Configuration

    ISDN Adapter Option Backup / On- The Backup / On-Demand Configuration screen allows you to view and alter parame- Demand ters for the ISDN Backup or On-Demand operations. Configuration To proceed to Backup/On-Demand Configuration, from the System View Screen, type “BC”...
  • Page 126 WAN IP Add # n - Sets the IP Address for management access while the unit is Learn IP Add - Sets IP Address to “Learning Mode,” where unit will learn its NOTE: See “Management IP Address per Connection” later in this section of the manual for a detailed description of SNMP IP Address learning.

  • Page 127: Management Ip Address Per Connection

    ISDN Adapter Option Management When optioned with ISDN, FrameSaver NP 64+ can have three different communica- IP Address per tions paths that allow it to connect to the frame relay network in different places. They are DSU, ISDN dial up Phone # 1 and ISDN dial up Phone #2. Each of these connec- Connection tion points could result in the management PVC routing through different IP sub-nets to reach the NCC (Network Control Center), or it may be desirable to have the Frame-...

  • Page 128: Diagnostics

    Diagnostics This section contains diagnostic information specific to the ISDN Adapter option. For diagnostic information regarding basic FrameSaver NP 64+ features, refer to Sec- tion 5, “Diagnostics” of this manual. ISDN Adapter option diagnostic features include; ISDN Adapter Status information and Tests, Alarm reporting, and Front Panel LED Indicators.

  • Page 129: Table 6-3 Framesaver Np 64+ Front Panel Indicators (With Isdn Adapter)

    ISDN Adapter Option ISDN front panel indicators are described in Table 6-3. Table 6-3 FrameSaver NP 64+ Front Panel Indicators (with ISDN Adapter) Nomenclature ISDN READY Green LED BRI ALARM Red LED B1 IN USE Green LED B2 IN USE Green LED 6-16 FrameSaver NP 64+ User’s Manual - Installation Guide...

  • Page 130: Isdn Tests

    ISDN Tests ISDN testing features include Network Loopback and Operator-Initiated Management Session Tests. Loopback The ISDN “B” channels may be looped back (toward the Network) for external testing. Configured for Backup operation Loopback of a B-Channel is automatically initiated when connection is made to a Dial- In call, provided the B-Channel is currently configured for Backup operation.

  • Page 131: Isdn Status And Tests

    ISDN Adapter Option ISDN Status and The ISDN Status/Test screen provides ISDN Adapter (card) status and test capability. Tests The ISDN Status/Test screen is accessed from the System View screen, selecting [IT] by typing “IT” followed by ENTER. The ISDN Status/Test screen is shown in Figure 6-8. ****************************** ISDN Status / Test ****************************** Name: F@43802 DSU Fault:...
  • Page 132 Time Disable - Terminates and/or disables all backup activity for the specified High Speed Interface Status - ISDN Backup - Displays (blank) or the current status as reported by ISDN Adapter Card. Refer to the Appendix in this manual for a list and description of all status displays.

  • Page 133: Alarms

    ISDN Adapter Option Alarms FrameSaver NP 64+ generates “traps” (SNMP alarms or alerts) in response to certain detected network conditions. Specific Traps apply to the ISDN Adapter option. Traps ISDN-related conditions (objects) which generate traps are listed in Table 6-4. Table 6-4 Traps - Private MIB Extension Component Object...

  • Page 134: Led Indicator Troubleshooting

    LED Indicator The ISDN Adapter front panel LED indicators may also be used to troubleshoot a Troubleshooting problem. Table 6-5 describes the ISDN Adapter LED indicator’s normal states, and some possible causes for abnormal indications. Table 6-5 FrameSaver NP 64+ ISDN Adapter LED Diagnostics FrameSaver NP 64+ ISDN Adapter LED Status ISDN...

  • Page 135: Additional Descriptions

    ISDN Adapter Option Additional This (these) paragraphs provide additional information, notes, or tips about some of the Descriptions specific operating features of the ISDN Adapter option. This information is intended to assist anyone in the use of these features or in trouble- shooting problems concerning these features.

  • Page 136: Appendix

    Appendix Fault & Test FrameSaver NP 64+ screen displays include status fields which indicate Fault and/or Test conditions that relate to the selected screen. These fields are indicated on the Screen screens by a title such as “System Test/Fault”. After the title, the highest priority fault or test currently active is displayed, if any.

  • Page 137: Dsu Fault

    Appendix DSU Fault DSU Fault shows the highest priority DSU fault currently detected. This is displayed on the DSU Test and ISDN Status / Test screens. Display DSU Fault Failure of DSU related hardware detected by the unit. Carrier Loss Detected loss of DDS facility.

  • Page 138: Frame Mgr Fault

    Frame Mgr Frame Mgr Fault shows the highest priority Frame Manager fault currently detected. This is displayed on the DSU Test and ISDN Status / Test screens. Fault Display Clear Channel Frame Manager configured for and operating in “Transparent” mode. LMI Netw Failure Invalid or no response to LMI Status enquiries toward Network.

  • Page 139: Isdn Backup

    Appendix ISDN Backup ISDN Backup shows the highest priority ISDN Backup related fault, test or status cur- rently detected. This is displayed on the System View and ISDN Status / Test screens. Display ISDN Adapt Fault The ISDN hardware has failed (backup cannot be accomplished) ISDN Line Failure The ISDN line of at least one B-Channel is faulty (backup may not be possible).

  • Page 140: Isdn Demand

    ISDN Demand ISDN Demand shows the highest priority ISDN On-Demand related fault, test or status currently detected. This is displayed on the System View and ISDN Status / Test screens. Display ISDN Adapt Fault The ISDN hardware has failed (Demand operation cannot be accomplished) ISDN Line Failure The ISDN line of at least one B-Channel is faulty (Demand operation may not be possible).

  • Page 141: Table A-6 Isdn Connection Cause Codes

    Appendix Table A-6 ISDN Connection Cause Codes Code Cause Unallocated (unassigned) number. No route to specified transit network. No route to destination. Send special information tone. Misdialed trunk prefix. Channel unacceptable. Call awarded and being delivered in an established channel. Preemption.

  • Page 142: Modem Status, Fault

    Modem Status, Modem Status shows the highest priority internal modem related fault currently detect- ed. This is displayed on the System View screen. Fault Display ISDN Adapt Fault The ISDN hardware has failed. ISDN Line Failure The ISDN line of at least one B-Channel is faulty. ISDN SPID Failure An invalid or incorrect SPID has been entered for at least one B-Channel.

  • Page 143: System Test/Fault

    Appendix System System Test / Fault shows the highest priority System related test or fault currently de- tected. This is displayed on the System View screen. Test/Fault Display NVM Failure Failure of NVM (Non-Volatile Memory) detected by the unit and the latest configuration may not have been saved.

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