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OneAccess Crocus CNV User And Reference Manual

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Crocus CNV
Crocus CNV
USER and REFERENCE MANUAL
Version: 1.5
500866

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Summary of Contents for OneAccess Crocus CNV

  • Page 1 Crocus CNV Crocus CNV USER and REFERENCE MANUAL Version: 1.5 500866...

  • Page 2: Safety Requirements

    ©OneAccess Copyright notice The information and descriptions contained in this publication are the property of OneAccess. Such information and descriptions must not be copied or reproduced by any means, or disseminated or distributed without the express prior written permission of OneAccess.
  • Page 3 Col presente, ONEACCESS dichiara che questo Crocus CNV è in acquiescenza coi requisiti essenziali e stipulazioni attinenti ed altre di Direttivo 1999/5/EC. Με το παρόν, η ONEACCESS δηλώνει ότι αυτό το Crocus CNV είναι συµµορφούµενο µε τις βασικές απαιτήσεις και µε τις υπόλοιπες σχετικές διατάξεις της οδηγίας 1999/5/EC.
  • Page 4 Copyright, safety and statements Crocus CNV Environmental information The crossed-out wheeled bin means that within the European Union the product must be taken to separate collection at the product end of life. This applies to the device but also to any accessories marked with this symbol.
  • Page 5 Total Maintenance Application. It shows how to connect TMA with the Crocus CNV. It is also in this chapter that the attributes of the Crocus CNV are introduced. teaches you the basics to configure the Crocus CNV, in a step-by-step manner.

  • Page 6: Conventions Used In This Manual

    DIP switch A configuration attribute of the Crocus CNV which can be set with the DIP switches. Basic TMA A basic attribute of the Crocus CNV which can be set with the Total parameter Maintenance Application (TMA). Advanced TMA An advanced attribute of the Crocus CNV which can be set with the parameter Total Maintenance Application (TMA).
  • Page 7 Crocus CNV Preface Firmware version This manual describes the features, containment tree and attributes of the Crocus CNV firmware version T2771/01600 (CV) and T2772/00100 (TT). Your feedback Your satisfaction about this purchase is an extremely important priority to all of us at OneAccess.

  • Page 8: Table Of Contents

    Front panel LED indicators ..................25 DIP switches and straps of the Crocus CNV............29 DIP switches and straps of the Crocus CNV Table Top ..........30 DIP switches and straps of the Crocus CNV Card Version ........36 Maintenance of the Crocus CNV ................43 Introducing TMA ......................
  • Page 9 Alarm attribute overview ...................123 Introducing the alarm attributes ................124 General alarms ......................129 G703 onboard alarms ....................131 Interface alarms ......................132 10 TMA subsystem picture of the Crocus CNV ............. 133 10.1 Displaying the subsystem picture ................134 10.2 Subsystem picture elements..................135 11 Firmware download .................... 137 11.1...

  • Page 11: User Manual

    Crocus CNV User manual User manual...
  • Page 12 Crocus CNV User manual...

  • Page 13: Introduction To The Crocus Cnv

    Crocus CNV Introduction 1 Introduction to the Crocus CNV This chapter gives an introduction to the Crocus CNV. The following table gives an overview of this chapter. Section Title Page Introducing the Crocus CNV Crocus CNV product overview Modular interface overview...

  • Page 14: Introducing The Crocus Cnv

    Introduction Crocus CNV 1.1 Introducing the Crocus CNV In modem projects there is often a need for interface converters. The Crocus CNV (Interface Converter) is such a converter. The Crocus CNV offers the following features: • G.703 interface onboard and 1 modular DTE interface •...

  • Page 15: Crocus Cnv Product Overview

    Versions are powered via the CN4 card nest. 1.3 Modular interface overview A complete range of plug-in modular DTE interfaces can be used in conjunction with the Crocus CNV. All these modular DTE interfaces can be exchanged in only a few seconds.

  • Page 16: Cn4 Card Nest

    Crocus CNV 1.4 CN4 card nest The OneAccess CN4 card nest is based on a standard card nest which fits in a standard 19” rack. The CN4 card nest can hold up to 15 cards. It can be powered with: •...
  • Page 17 • Using the management concentrator as an IP proxy agent, you have the possibility to connect to the Crocus CNV over an IP network. In that case you can establish an IP connection with the Crocus CNV and run TMA, TMA CLI or the Web Interface over this connection. Using Telnet, you can also run ATWIN and CLI.

  • Page 18: Installing And Connecting The Crocus Cnv

    You are advised to read this chapter in a sequential manner, from the beginning to the end, without skipping any part. By doing so, your Crocus CNV will be completely installed and ready for configuration when you reach the end of this chapter.

  • Page 19: Safety Instructions

    Crocus CNV Installing and connecting the Crocus CNV 2.1 Safety instructions IMPORTANT SAFETY INSTRUCTIONS Unplug the unit from the wall power outlet (TT) or remove it from the card nest (CV) before installing, adjusting or servicing. The safety of this product depends upon the third pin (ground pin) of the 3-wire grounding type plug. Do not defeat this safety feature.

  • Page 20: Unpacking

    Installing and connecting the Crocus CNV Crocus CNV 2.2 Unpacking Rough handling during shipping causes most early failures. Before installation, check the shipping carton for signs of damage: • If the carton box is damaged, please place a claim with the carrier company immediately.

  • Page 21: Selecting A Site

    Crocus CNV Installing and connecting the Crocus CNV 2.3 Selecting a site WARNING In case of a TT, always place the unit on its feet without blocking the air vents. Do not stack multiple units directly onto each other, as stacking can cause heat build-up that could damage the unit.

  • Page 22: Installation And Connection Precautions

    To ensure compliance with EMC directive 89/336/EEC, shielded cables or ferrite beads have to be used. The interfaces on the Crocus CNV should only be connected to circuit types as listed below. Connector...

  • Page 23: Connecting The Crocus Cnv Table Top

    Crocus CNV Installing and connecting the Crocus CNV 2.5 Connecting the Crocus CNV Table Top This section explains how to connect the Crocus CNV TT. The following table gives an overview of this section. Section Title Page 2.5.1 Table Top connections 2.5.2...
  • Page 24 Installing and connecting the Crocus CNV Crocus CNV 2.5.1 Table Top connections All the connections have to be made at the back of the Crocus CNV Table Top. The following figure gives a rear view of the Crocus CNV TT. CTRL...

  • Page 25: Connecting The Power Supply

    Crocus CNV Installing and connecting the Crocus CNV 2.5.2 Connecting the power supply The following table explains how to connect the power supply. The Crocus CNV TT exists in two different models: TT model Connector type Connecting the power supply...
  • Page 26 2.5.3 Signal and protective ground interconnection You can configure the interconnection between signal ground and protective ground (earth). Do this by means of the appropriate strap located on the Crocus CNV TT motherboard. For more information, refer to Section 3.1.3 - Straps of the Table Top.
  • Page 27 Crocus CNV Installing and connecting the Crocus CNV 2.5.4 Inserting the DTE interface in the Table Top At the back of the TT, an empty slot is provided in which you can insert the desired DTE interface module without opening the housing.

  • Page 28: Connecting The Crocus Cnv Card Version

    Installing and connecting the Crocus CNV Crocus CNV 2.6 Connecting the Crocus CNV Card Version This section explains how to connect the Crocus CNV CV. The following table gives an overview of this section. Section Title Page 2.6.1 Inserting the Card Version in the CN4 card nest 2.6.2...
  • Page 29 2.6.1 Inserting the Card Version in the CN4 card nest The Crocus CNV CV consists of a stuffed print, provided with a front panel. The CV has to be inserted in the CN4 card nest. Most connections to this card are performed via 3 DIN-connectors on the back of the card: •...
  • Page 30 Installing and connecting the Crocus CNV Crocus CNV 2.6.2 Inserting the modular DTE interface in the Card Version At the back of the CN4 card nest, two empty slots are provided in which the desired modular DTE interface can be inserted without extracting the card from the card nest. The upper interface slot is used for converter A and the lower interface slot is used for converter B.
  • Page 31 • the RJ45 connector located at the front of the Crocus CNV CV • the line connector block located at the back of the CN4 card nest. You can make this selection by means of 8 straps located on the Crocus CNV CV motherboard. This is described in the paragraphs below.
  • Page 32 Strap setting You can connect to the onboard G703 interface through … 1 – 2 (default) the RJ45 connector located at the front of the Crocus CNV CV. 1 2 3 2 – 3 the line connector block located at the back of the CN4 card nest. Refer to Section 2.6.4 - Connecting to the onboard G703 through the line connector...
  • Page 33 Crocus CNV Installing and connecting the Crocus CNV 2.6.4 Connecting to the onboard G703 through the line connector block It is possible to connect to the onboard G703 interface through the line connector block instead of through the RJ45 connectors (as explained in Section 2.6.3 - Connecting to the onboard G703 using the...

  • Page 34: Connecting The Interfaces Of The Crocus Cnv

    To connect this interface to … • a DTE device, use a straight interconnection cable. • a DCE device, use a crossed interconnection cable. The following figure shows an example of a set-up with a Crocus CNV: modem + V36 interface modem + G703 interface...

  • Page 35: Front Panel Led Indicators

    Crocus CNV Installing and connecting the Crocus CNV 2.8 Front panel LED indicators This section gives an overview of the front panel LEDs and what they indicate The following table gives an overview of this section. Section Title Page 2.8.1 Introduction to the front panel LEDs 2.8.2...

  • Page 36: Introduction To The Front Panel Leds

    Installing and connecting the Crocus CNV Crocus CNV 2.8.1 Introduction to the front panel LEDs When all the connections are made and the Crocus CNV is powered, the LEDs on the front panel reflect the actual status of the device. LED label and colour The following table lists the front panel LED indicators with their corresponding label and colour.

  • Page 37: Power Led

    This LED indicates that the Crocus CNV is connected to the power supply and is switched on. 2.8.3 Test LED This LED indicates whether the Crocus CNV is in normal operation or in test condition (ET, AL, RDL, DL or a combination of them). Four different test LED status modes can be distinguished:...

  • Page 38: Loss Of Signal / Loss Of Frame Alignment Led

    Installing and connecting the Crocus CNV Crocus CNV 2.8.5 Loss Of Signal / Loss of Frame Alignment LED This LED indicates a Loss Of Signal or Loss of Frame Alignment has occurred. The different LOS / LFA LED status modes are displayed in the following table:...

  • Page 39: Dip Switches And Straps Of The Crocus Cnv

    3 DIP switches and straps of the Crocus CNV This chapter locates the DIP switches and straps on the Crocus CNV TT and CV motherboard. It also gives an overview of their function and it explains how to change their settings.

  • Page 40: Dip Switches And Straps Of The Crocus Cnv Table Top

    3.1 DIP switches and straps of the Crocus CNV Table Top This section locates the DIP switches and straps on the Crocus CNV Table Top motherboard. It gives an overview of their function and it explains how to change their settings.
  • Page 41 DIP switches and straps of the Crocus CNV 3.1.1 Location of the DIP switches and straps on the Table Top The figure below shows the position of the DIP switches and straps on the Crocus CNV TT motherboard. JP29 3. CON 2.
  • Page 42 DIP switches and straps of the Crocus CNV Crocus CNV 3.1.2 DIP switches of the Table Top DIP switch bank DS5 The following table gives an overview of DIP switch bank DS5 of the TT: DIP switch name DS5 no.
  • Page 43 In that case you can earth the application through the Crocus CNV by connecting the Crocus CNV to the earth and setting strap ST1 in position 3 2 1 Also the opposite situation might occur: it is not possible to earth the Crocus CNV.
  • Page 44 DIP switches and straps of the Crocus CNV Crocus CNV Straps JP21, JP23, JP25 and JP27 Use the straps JP21, JP23, JP25 and JP27 in order to select between the RJ45 connector or the BNC connectors. Strap setting You can connect to the onboard G703 interface through …...
  • Page 45 Remove the cover as follows: 1. Carefully lift the back of the cover a few centimetres. 2. Gently pull the cover backwards from under the nose of the Crocus CNV TT. Change the DIP switch and/or strap settings. Replace the cover and close tight.

  • Page 46: Dip Switches And Straps Of The Crocus Cnv Card Version

    3.2 DIP switches and straps of the Crocus CNV Card Version This section locates the DIP switches and straps on the Crocus CNV Card Version motherboard. It gives an overview of their function and it explains how to change their settings.

  • Page 47: Location Of The Dip Switches On The Card Version

    Crocus CNV DIP switches and straps of the Crocus CNV 3.2.1 Location of the DIP switches on the Card Version The figure below shows the position of the DIP switches on the Crocus CNV CV motherboard. User manual...

  • Page 48: Location Of The Straps On The Card Version

    DIP switches and straps of the Crocus CNV Crocus CNV 3.2.2 Location of the straps on the Card Version The figure below shows the position of the straps on the Crocus CNV CV motherboard. strap JP6, JP7, JP29 strap JP21, JP23, JP25, JP27...

  • Page 49: Dip Switches Of The Card Version

    Crocus CNV DIP switches and straps of the Crocus CNV 3.2.3 DIP switches of the Card Version DIP switch bank DS2 The following table gives an overview of the DIP switches on DIP switch bank DS2: DIP switch name DS2 no.
  • Page 50 DIP switches and straps of the Crocus CNV Crocus CNV DIP switch bank DS3 The following table gives an overview of the DIP switches on DIP switch bank DS3: DIP switch name DS3 no. Setting Function signal B – earth...

  • Page 51: Straps Of The Card Version

    Crocus CNV DIP switches and straps of the Crocus CNV 3.2.4 Straps of the Card Version Straps JP21 JP28 Use the straps JP21 up to JP28 in order to select between the RJ45 connector or the line connector block: • JP21, JP23, JP25, JP27 makes the selection for converter A •...

  • Page 52: Changing Dip Switch And Strap Settings Of The Card Version

    DIP switches and straps of the Crocus CNV Crocus CNV 3.2.5 Changing DIP switch and strap settings of the Card Version To change the DIP switch and / or strap settings of the Crocus CNV CV, proceed as follows: Step Action Loosen the screws of the Crocus CNV.

  • Page 53: Maintenance Of The Crocus Cnv

    Maintenance of the Crocus CNV 4 Maintenance of the Crocus CNV Once you installed the Crocus CNV, you can proceed with the configuration of the Crocus CNV. You can do this using the Total Maintenance Application (TMA). This chapter introduces TMA and describes how to start a session on the Crocus CNV. Furthermore, this chapter gives an introduction to the attributes of the Crocus CNV.

  • Page 54: Introducing Tma

    You will need a new version of the model file distribution if changes have been made to the attributes of the Crocus CNV. The most recent model files and TMA engine can always be downloaded from the OneAccess web site. Go to http://www.oneaccess-net.com/telindus/downloads...

  • Page 55: Connecting To A Crocus Cnv With Tma

    • Select the option Serial, and specify the COM port of your computer the Crocus CNV is connected to. • If a password has previously been configured in the Crocus CNV then also fill in the password field. If the necessary parameters are filled in, press the Next > button.
  • Page 56 Important remark Suppose that both modem (converter) A and B of a Crocus CNV CV have a password. In that case, if you want to connect with TMA to converter B … • first enter the password of converter A in the Connect device window (see step 3) •...
  • Page 57 TMA to the Crocus CNV through the Orchid 1003 LAN. What is more, the Orchid 1003 LAN can act as an IP proxy device for the Crocus CNV. The IP address related to the Crocus CNV is defined in the Orchid 1003 LAN.

  • Page 58: Introducing The Management Attributes Of The Crocus Cnv

    Crocus CNV 4.3 Introducing the management attributes of the Crocus CNV This section gives an introduction to the management attributes of the Crocus CNV. It introduces terms such as containment tree, group, object, attribute, value and action. Containment tree terminology The following figure depicts the TMA window containing the Crocus CNV containment tree.
  • Page 59 The following table explains the terminology associated with the containment tree. Term Description containment The containment tree represents the hierarchical structure of the Crocus CNV. It is tree composed of a number of objects that are ordered in a tree. This tree resembles a ®...
  • Page 60 Maintenance of the Crocus CNV Crocus CNV The Crocus CNV containment tree The following table lists the different objects of the Crocus CNV containment tree. Object This object contains … > crocusIfConv the general system attributes. It is the top object in the containment tree.
  • Page 61 Crocus CNV Maintenance of the Crocus CNV Where can you find an overview of all the attributes? The reference part of this manual explains all the attributes of the Crocus CNV. One chapter describes one group of attributes: • chapter describes the configuration attributes •...

  • Page 62: Step-By-Step Configuration

    You are advised to read this chapter in a sequential manner, from the beginning to the end, without skipping any part. By doing so, your Crocus CNV will be completely configured and ready for use when you reach the end of this chapter.

  • Page 63: Reading The Configuration Settings

    5.1 Reading the configuration settings As this chapter explains the basic configuration of the Crocus CNV, it contains some DIP switch configuration tables and a lot of TMA attribute strings. To enable you to read this information in a correct manner, this section explains the structure of such tables and strings.
  • Page 64 Step-by-step configuration Crocus CNV TMA attribute string A TMA attribute string has the following layout: crocusIfConv<2m/Nx64><Tt/Cv>/g703OnBoard/longHaul default: enabled The following table explains the TMA attribute string layout. Number This position displays … the TMA attribute icon. It indicates that the string which follows is a TMA attribute string.

  • Page 65: Loading The Default Configuration

    5.2 Loading the default configuration If you install the Crocus CNV for the first time, all configuration attributes are set to their default value. If the Crocus CNV has already been configured a number of times and you want to reconfigure it starting from scratch, it might be best to load the default configuration.
  • Page 66 • CV, insert the card in the CN4 card nest without fastening the screws. ⇒ The Crocus CNV reboots and loads the default configuration. Activate the loaded default configuration: 1. Open a TMA session on the Crocus CNV (refer to Section 4.2 - Connecting to a Crocus CNV with TMA).
  • Page 67 Crocus CNV Step-by-step configuration 5.2.2 The Load Default Configuration action in TMA The location of the Load Default Configuration action in the Crocus CNV containment tree is: crocusIfConv<2m/Nx64><Tt/Cv>/Load Default Configuration To load the default configuration, proceed as follows: Step Action In the TMA window, select the top object crocusIfConv<2m/Nx64><Tt/Cv>...

  • Page 68: Configuring The Clocking Mode

    Step-by-step configuration Crocus CNV 5.3 Configuring the clocking mode This section explains how to configure the clocking mode on the Crocus CNV. The following table gives an overview of this section. Section Title Page 5.3.1 The clocking attributes in TMA 5.3.2...

  • Page 69: The Clocking Attributes In Tma

    Crocus CNV Step-by-step configuration 5.3.1 The clocking attributes in TMA Use the following two attributes to select a clocking mode. crocusIfConv<2m/Nx64><Tt/Cv>/<dteInterface>/txClk default: <interface dependent> Use this attribute to select the clocking mode of the DTE interface its transmit clock. The following table gives an overview of the different clocking modes. It also indicates which clocking modes are supported on which DTE interfaces.

  • Page 70: The Different Clocking Modes

    In this case the clock is looped back within the Crocus CNV itself. It may be necessary to use preferred clocking when delays are introduced in the communication between the DTE and the Crocus CNV. Delays may occur in case of long interconnection cables. User manual...

  • Page 71: The Presence Of The External Clock Signal

    The presence or absence of an external clock signal may influence the clocking mode that is actually chosen by the Crocus CNV. This section explains how. All interfaces supporting the external clock signal, regularly check the presence of this external clock signal.

  • Page 72: Schematic Overview Of The Different Clocking Modes

    Step-by-step configuration Crocus CNV 5.3.4 Schematic overview of the different clocking modes The following figures give a schematic overview of all the clocking possibilities: G703 ExtTxClk TxClk clock generation RxClk internalPreferred / fromLine clocking G703 G703 ExtTxClk TxClk clock clock...
  • Page 73 Crocus CNV Step-by-step configuration G703 G703 ExtTxClk ExtTxClk TxClk TxClk RxClk RxClk slaveRcvPreferred / <any value> clocking slaveRcvAlternative / <any value> clocking G703 G703 ExtTxClk ExtTxClk TxClk TxClk RxClk RxClk Retiming buffer external / fromLine clocking external / slaveTransmit clocking...

  • Page 74: Special Points Of Interest Concerning Clocking On The X21 Interface

    Step-by-step configuration Crocus CNV 5.3.5 Special points of interest concerning clocking on the X21 interface The following are some special points of interest concerning clocking on the X21 interface: • In internal clocking modes, the S clock is the transmit clock. There is always a retiming buffer in the receive direction (slave transmit), independent of the rxClk attribute value.

  • Page 75: Configuring The Onboard G703 Interface

    Crocus CNV Step-by-step configuration 5.4 Configuring the onboard G703 interface crocusIfConv<2m/Nx64><Tt/Cv>/g703OnBoard/coding default: HDB3 Use the coding attribute to set the G703 interface encoding mode. Two encoding modes are available: Value Description Alternate Mark Inversion is a bipolar code with no zero substitution.
  • Page 76 Step-by-step configuration Crocus CNV crocusIfConvNx64<Tt/Cv>/g703OnBoard/crc4Insertion default: enabled This attribute is only present on the Crocus Nx64 CNV. Use the crc4Insertion attribute to enable or disable the cyclic redundancy check (CRC). If you enable this attribute, a CRC is inserted in time slot 0 of the G.704 framed data stream. This CRC is used to check the data integrity on the G.703 connection.

  • Page 77: Configuring The Interface Specific Attributes

    Crocus CNV Step-by-step configuration 5.5 Configuring the interface specific attributes This section explains the most important interface specific attributes. The following table gives an overview of this section: Section Title Page 5.5.1 Configuring the RTS control (RS530, V35, V36) 5.5.2...
  • Page 78 Use the rtsControl attribute to define which device will activate the RTS signal. Normal operation requires the RTS signal (circuit 105) to be active before the Crocus CNV activates its data transfer state, as indicated by the CTS signal (circuit 106). Therefore, make sure the RTS signal is activated either by the application or by the Crocus CNV.
  • Page 79 Crocus CNV Step-by-step configuration 5.5.2 Configuring the LAN filter (Bridge) crocusIfConv<2m/Nx64><Tt/Cv>/bridge/IanFilter default: enabled Use the lanFilter attribute to enable or disable the filter functionality of the bridge. The lanFilter attribute can be set to: Value Description enabled The bridge acts as a filter.

  • Page 80: Configuring The Management Attributes

    Crocus CNV 5.6 Configuring the management attributes This section explains the management attributes of the Crocus CNV. These attributes allow you to make all the devices in your network accessible for management from one central location. First this section gives you some rules of thumb and remarks concerning the management of the Crocus CNV in a network.
  • Page 81 − ctrlPortProtocol attribute to management. • If you use a router interface in the Crocus CNV, then you are advised to set the ctrlPortProtocol attribute to management. Else you might be unable to manage the router interface. • The Crocus CNV is not a true multi-device (a multi-device is a device that incorporates several devices on one card, such as the Crocus SHDSL CV Twin).
  • Page 82 CNV has to serve. This is explained in the following table: Value Description management Select this value if you want to connect the control connector of the Crocus CNV to … • a management concentrator (e.g. the Orchid 1003 LAN or 1035 Orchid) for management purposes.

  • Page 83: Activating The Configuration

    Step-by-step configuration 5.7 Activating the configuration Once the basic configuration of the Crocus CNV is made, it has to be activated. Do this by pressing the Send all attributes to device button in TMA: If you experience problems of any kind, you can always consult the status, performance and alarm attributes in order to determine the problem.

  • Page 84: Reference Manual

    Crocus CNV Reference manual Reference manual...
  • Page 85 Crocus CNV Reference manual...

  • Page 86: Configuration Attributes

    Configuration attributes Crocus CNV 6 Configuration attributes This chapter discusses the configuration attributes of the Crocus CNV. The following table gives an overview of this chapter. Section Title Page Configuration attribute overview General configuration attributes G703 onboard configuration attributes Interface configuration attributes...

  • Page 87: Configuration Attribute Overview

    Crocus CNV Configuration attributes remoteAlarmMask 6.1 Configuration attribute txClk overview rxClk >> x21 > crocusIfConv<2m/Nx64><Tt/Cv> alarmMask sysName alarmLevel sysContact alarmContactHighMask sysLocation alarmContactLowMask bootFromFlash remoteAlarmMask security txClk alarmMask rxClk alarmLevel alarmContactHighMask >> bridge alarmContactLowMask IanFilter remoteAlarmMask alarmMask Action: Activate Configuration alarmLevel...

  • Page 88: General Configuration Attributes

    This is a SNMP MIB2 parameter. crocusIfConv<2m/Nx64><Tt/Cv>/sysLocation default: <empty> This is a field where you can fill in the physical location of the Crocus CNV. The field has a limit of 64 characters. This is a SNMP MIB2 parameter. crocusIfConv<2m/Nx64><Tt/Cv>/bootFromFlash default: auto The Crocus CNV has two flash memory banks.
  • Page 89 • crocusIfConv<2m/Nx64><Tt/Cv>/security If no passwords are created, everybody has complete access. If you define at least one password, it is impossible to access the Crocus CNV with TMA if you do not enter the correct password. If you create a list of passwords, you should create at least one with write and security access. If not, you will be unable to make configuration and password changes after activation of the new configuration.
  • Page 90 If you forgot your password or you forgot to create one with write and security access, then you can set the Load Default Configuration DIP switch. As a result, the Crocus CNV reboots in its default configuration. You can then retrieve the erroneous configuration and correct it.
  • Page 91 The remoteAlarmMask attribute enables or disables for each alarm of the corresponding object, whether: • a visual indication is generated (blinking error LED). • an alarm is sent to the remote Crocus CNV. By default, all the alarms in the remoteAlarmMask are set to disabled.
  • Page 92 Three types of configuration are present in the Crocus CNV: • the non-active configuration • the active configuration • the default configuration. When configuring the Crocus CNV with TMA, as in Chapter 5 - Step-by-step configuration, the following happens: Phase Action...
  • Page 93 Default Configuration If you install the Crocus CNV for the first time, all configuration attributes are set to their default value. If the Crocus CNV has already been configured a number of times and you want to reconfigure it starting from scratch, you can load the default configuration.
  • Page 94 Configuration attributes Crocus CNV crocusIfConv<2m/Nx64><Tt/Cv>/Cold Boot This action will reboot the Crocus CNV while the power stays up (the Crocus CNV also reboots if it is powered down and up again). This implies that: • it checks which firmware to use •...

  • Page 95: G703 Onboard Configuration Attributes

    When set to disabled, this attribute prevents that a digital loop enabled can be performed by a remote Crocus CNV on the local Crocus CNV. When rdlDetect is disabled, and a remote Crocus CNV initiates an RDL test, the local Crocus CNV will not go in digital loop.
  • Page 96 Configuration attributes Crocus CNV crocusIfConv<2m/Nx64><Tt/Cv>/g703OnBoard/alarmMask The alarmMask attribute enables or disables for each alarm of the corresponding object, whether it is ® communicated to the central management system (e.g. HP OpenView ) or not. For more information on … • alarms in general, refer to Section 9.2 Introducing the alarm attributes.
  • Page 97 Crocus CNV Configuration attributes crocusIfConvNx64<Tt/Cv>/g703OnBoard/crc4Insertion default: enabled This attribute is only present on the Crocus Nx64 CNV. Use the crc4Insertion attribute to enable or disable the cyclic redundancy check (CRC). If you enable this attribute, a CRC is inserted in time slot 0 of the G.704 framed data stream. This CRC is used to check the data integrity on the G.703 connection.
  • Page 98 The remoteAlarmMask attribute enables or disables for each alarm of the corresponding object, whether: • a visual indication is generated (blinking error LED). • an alarm is sent to the remote Crocus CNV. By default, all the alarms in the remoteAlarmMask are set to disabled.

  • Page 99: Interface Configuration Attributes

    Crocus CNV Configuration attributes 6.4 Interface configuration attributes This section discusses the configuration attributes of the different DTE interfaces. The following table gives an overview of this section. Section Title Page 6.4.1 General interface configuration attributes 6.4.2 RS530, V35 and V36 interface configuration attributes 6.4.3...
  • Page 100 The remoteAlarmMask attribute enables or disables for each alarm of the corresponding object, whether: • a visual indication is generated (blinking error LED). • an alarm is sent to the remote Crocus CNV. By default, all the alarms in the remoteAlarmMask are set to disabled.
  • Page 101 Use the rtsControl attribute to define which device will activate the RTS signal. Normal operation requires the RTS signal (circuit 105) to be active before the Crocus CNV activates its data transfer state, as indicated by the CTS signal (circuit 106). Therefore, make sure the RTS signal is activated either by the application or by the Crocus CNV.
  • Page 102 Configuration attributes Crocus CNV 6.4.3 Bridge interface configuration attributes crocusIfConv<2m/Nx64><Tt/Cv>/bridge/IanFilter default: enabled Use the lanFilter attribute to enable or disable the filter functionality of the bridge. For more information, refer to Section 5.5.2 - Configuring the LAN filter (Bridge). Reference manual...

  • Page 103: Management Configuration Attributes

    6.5 Management configuration attributes crocusIfConv<2m/Nx64><Tt/Cv>/management/cms2Address default: 0 If you want to connect to a Crocus CNV with TMA, you have to specify the address of the Crocus CNV. Refer to Section 4.2 - Connecting to a Crocus CNV with TMA.
  • Page 104 This time-out period can be set with the consoleNoTrafficTimeOut attribute. The purpose of such a timer is to protect the Crocus CNV against unauthorised access in case the last user did not close his session.

  • Page 105: Status Attributes

    Crocus CNV Status attributes 7 Status attributes This chapter discusses the status attributes of the Crocus CNV. The following table gives an overview of this chapter. Section Title Page Status attribute overview General status attributes G703 onboard status attributes Interface status attributes...

  • Page 106: Status Attribute Overview

    Status attributes Crocus CNV 7.1 Status attribute overview > crocusIfConv<2m/Nx64><Tt/Cv> >> rs530, v35, v36 sysDesc txdItu103 sysObjectID rxdItu104 sysUpTime rtsItu105 sysServices ctsItu106 flash1Version dsrItuT107 flash2Version dcdItu109 activeFlash rdlItu140 bootVersion alItu141 flashVersions tiItu142 messages ifDescr deviceId ifType configurationSaving ifSpeed ifOperStatus ifClockingTx >>...
  • Page 107 Crocus CNV Status attributes >> bridge wanTxd wanRxd ifDescr ifType ifSpeed ifOperStatus ifClockingTx ifClockingRx >> router ifDescr ifType ifSpeed ifOperStatus ifClockingTx ifClockingRx only present when corresponding interface is used >> management ifSpeed cardNestNumber cardSlotNumber position CV only >> operatingSystem taskInfo...

  • Page 108: General Status Attributes

    This is the SNMP identification string. This is an SNMP MIB2 parameter. Example: 1.3.6.1.4.1.776.13. crocusIfConv<2m/Nx64><Tt/Cv>/sysUpTime This is the elapsed time since last power-on or cold boot of the Crocus CNV. Example: 00005d 02h 42m 15s, which means 5 days, 2 hours, 42 minutes and 15 seconds. crocusIfConv<2m/Nx64><Tt/Cv>/sysServices This is the SNMP service identification.
  • Page 109 This displays the code and version of the firmware currently stored in flash bank 2. If this value is empty then flash bank 2 does not contain firmware or the Crocus CNV is equipped with one flash bank only. crocusIfConv<2m/Nx64><Tt/Cv>/activeFlash This displays which flash bank is currently active.
  • Page 110 This means that if you open a terminal emulation session on the control port, you can monitor these messages. If you hit the ENTER key, the messages stop. crocusIfConv<2m/Nx64><Tt/Cv>/deviceId This displays a unique code. This code is programmed into the Crocus CNV before it leaves the factory. You can use this code for inventory purposes. crocusIfConv<2m/Nx64><Tt/Cv>/configurationSaving This attribute indicates when the Crocus CNV is writing its (new) configuration to the flash memory.

  • Page 111: G703 Onboard Status Attributes

    The test is initiated by the Total Maintenance Application or a central management ® system (e.g. TMA under HP OpenView keyboard The test is initiated by means of the buttons on the front panel of the Crocus CNV. interface The test is initiated by the application, via the interface. remote The test is initiated by the remote Crocus CNV.
  • Page 112 Crocus CNV, the testStatus indicates running immediately after starting the RDL test on the local Crocus CNV. In other words, there is no guarantee that the RDL test was initiated successfully on the remote Crocus CNV.
  • Page 113 Crocus CNV Status attributes crocusIfConv<2m/Nx64><Tt/Cv>/g703OnBoard/ifSpeed This attribute displays the current interface speed in bits per second (bps), e.g. 640000. When the interface is down (ifOperStatus = down), the interface speed is 0. crocusIfConv<2m/Nx64><Tt/Cv>/g703OnBoard/ifOperStatus This attribute displays the current operational status of the interface. The possible indications are:...

  • Page 114: Interface Status Attributes

    Status attributes Crocus CNV 7.4 Interface status attributes This section discusses the status attributes of the different DTE interfaces. The following table gives an overview of this section. Section Title Page 7.4.1 General interface status attributes 7.4.2 RS530, V35 and V36 interface status attributes 7.4.3...
  • Page 115 Crocus CNV Status attributes 7.4.1 General interface status attributes crocusIfConv<2m/Nx64><Tt/Cv>/<dteInterface>/ifDescr This attribute displays the modular DTE interface description. It is an SNMP MIB2 parameter. crocusIfConv<2m/Nx64><Tt/Cv>/<dteInterface>/ifType This attribute displays the modular DTE interface type. It is an SNMP MIB2 parameter. The following table shows the ifDescr and ifType attribute for each modular DTE interface.
  • Page 116 • In case of a Router interface the ifSpeed and ifOperStatus attributes display the speed and operational status between the Router interface and the Crocus CNV. This implies that as soon as you insert a Router interface in the Crocus CNV then the crocusIfConv<2m/Nx64><Tt/Cv>/router/ifOperStatus value becomes up, disregarding of the operational statuses on the Router interface itself.
  • Page 117 Crocus CNV Status attributes 7.4.2 RS530, V35 and V36 interface status attributes crocusIfConv<2m/Nx64><Tt/Cv>/<dteInterface>/txdItu103 This attribute displays the status (on / off) of the transmit data signal (circuit 103). The txdItu103 attribute only indicates the presence of the TxD signal, it does not monitor the real data signal.
  • Page 118 Status attributes Crocus CNV 7.4.3 X21 interface status attributes crocusIfConv<2m/Nx64><Tt/Cv>/x21/txdItu103 This attribute displays the status (on / off) of the transmit data signal (circuit 103). The txdItu103 attribute only indicates the presence of the TxD signal, it does not monitor the real data signal.
  • Page 119 Crocus CNV Status attributes 7.4.4 Bridge interface status attributes crocusIfConv<2m/Nx64><Tt/Cv>/<dteInterface>/wanTxd This attribute displays the status (on / off) of the WAN TxD (wide area network transmit data) signal, after encapsulation of the user data on the Bridge interface. crocusIfConv<2m/Nx64><Tt/Cv>/<dteInterface>/wanRxd This attribute displays the status (on / off) of the WAN RxD (wide area network receive data) signal, before extraction of the user data on the Bridge interface.

  • Page 120: Management Status Attributes

    It is possible to manage the Crocus CNV with the Orchid 1003 LAN management concentrator. In that case, the address of the CN4 card nest has to be known so that the Orchid can address the Crocus CNV. The CN4 card nest address can be set with DIP switches at the back of the card nest. For more information, refer to the CN4 manual.

  • Page 121: Operating System Status Attributes

    Crocus CNV Status attributes 7.6 Operating system status attributes crocusIfConv<2m/Nx64><Tt/Cv>/operatingSystem/taskInfo The taskInfo table displays status information about the operating system. The table contains the following attributes: Attribute Description taskName Name of the task. taskStatus Current status. The task can have the following status values:...

  • Page 122: Performance Attributes

    Performance attributes Crocus CNV 8 Performance attributes This chapter discusses the performance attributes of the Crocus CNV. The following table gives an overview of this chapter. Section Title Page Performance attribute overview Introducing the performance attributes G703 onboard performance attributes...

  • Page 123: Performance Attribute Overview

    Crocus CNV Performance attributes 8.1 Performance attribute overview > crocusIfConv<2m/Nx64><Tt/Cv> >> g703OnBoard errorCount h2Performance h24Performance g826Performance h2G826Performance h24G826Performance g703Performance h2G703Performance h24G703Performance Action: Test Activation >> operatingSytem currUsedProcPower (%) freeDataBuffers totalDataBuffers largestFreeBlockSize freeBlockCount freeMemory totalMemory usedProcPower taskInfo Reference manual...

  • Page 124: Introducing The Performance Attributes

    Crocus CNV. This can be considered as a performance information summary. The Crocus CNV does not contain a real-time clock, therefore time information is related to its internal clock. To allow you to situate the time intervals in the real time, the sysUpTime attribute is returned together with the performance information.
  • Page 125 Crocus CNV Performance attributes Performance terms The following table explains the performance information terms. Term Description sysUpTime Displays the elapsed time since the last cold boot. min, max, avrg Display the minimum, maximum and average values calculated for the corresponding period.

  • Page 126: G703 Onboard Performance Attributes

    Performance attributes Crocus CNV 8.3 G703 onboard performance attributes crocusIfConv<2m/Nx64><Tt/Cv>/g703OnBoard/errorCount This attribute displays the amount of detected errors since the start of an ET, AL-ET or RDL-ET test. Every time a new ET, AL-ET or RDL-ET is started, the errorCount attribute is reset to 0.
  • Page 127 Crocus CNV Performance attributes crocusIfConv<2m/Nx64><Tt/Cv>/g703OnBoard/g826Performance This structured value displays the performance summary related to the G826 performance. The g826Performance structured value elements are the following: Element For the time since the last cold boot, this value displays … linkDownCount the number of times the G703 line went down.
  • Page 128 Performance attributes Crocus CNV crocusIfConv<2m/Nx64><Tt/Cv>/g703OnBoard/g703Performance This structured value displays the performance summary related to the G703 performance. The g703Performance structured value elements are the following: Element For the time since the last cold boot, this value displays … aisCount the number of times an Alarm Indication Signals was detected.
  • Page 129 Performance attributes crocusIfConv<2m/Nx64><Tt/Cv>/g703OnBoard/Test Activation Use this action to perform a test on the Crocus CNV. These tests are useful to trace possible problems. Possible tests are: no, al, dl, rdl, et, alEt, rdlEt. To execute a test, proceed as follows:...

  • Page 130: Operating System Performance Attributes

    Performance attributes Crocus CNV 8.4 Operating system performance attributes crocusIfConv<2m/Nx64><Tt/Cv>/operatingSystem/currUsedProcPower (%) This is the amount of processing power used during the last 650 milliseconds, expressed as a percentage of the total available processing power. crocusIfConv<2m/Nx64><Tt/Cv>/operatingSystem/freeDataBuffers The processor uses buffers for storing the packets during processing and/or queuing. Each buffer has a 256 byte size, headers included.
  • Page 131 Crocus CNV Performance attributes crocusIfConv<2m/Nx64><Tt/Cv>/operatingSystem/usedProcPower This table lists the used processing power for the 11 most recent 30 seconds intervals. The processing power is expressed as a percentage of the total processing power. Each entry in the attribute usedProcPower is composed of the following attributes:...

  • Page 132: Alarm Attributes

    Alarm attributes Crocus CNV 9 Alarm attributes This chapter discusses the alarm attributes of the Crocus CNV. The following table gives an overview of this chapter. Section Title Page Alarm attribute overview Introducing the alarm attributes General alarms G703 onboard alarms...

  • Page 133: Alarm Attribute Overview

    Crocus CNV Alarm attributes 9.1 Alarm attribute overview > crocusIfConv<2m/Nx64><Tt/Cv> totalAlarmLevel alarmInfo notResponding alarmSyncLoss configChanged access remoteAlarm powerSupply1CvFail powerSupply2CvFail powersupply48vfail unknownState coldBoot warmBoot codeConsistencyFail configConsistencyFail >> g703OnBoard alarmInfo linkDown testActive lossOfTiming >> rs530, v35, v36, x21, bridge, router alarmInfo linkDown...

  • Page 134: Introducing The Alarm Attributes

    Crocus CNV 9.2 Introducing the alarm attributes Before discussing the alarm attributes of the Crocus CNV in detail, some general information on the alarm attributes of the Crocus CNV is given. The following table gives an overview of this section.
  • Page 135 • a visual indication is generated (blinking error LED) • the alarm contacts on the CN4 card nest are driven • an alarm is sent to the remote Crocus CNV (only on the Crocus Nx64 CNV in framed mode). crocusIfConv<2m/Nx64>Cv/…/alarmContactLowMask This attribute is present on the CV only.
  • Page 136 Alarm attributes Crocus CNV Reference manual...
  • Page 137 The general alarm attributes totalAlarmLevel and alarmInfo are explained below. crocusIfConv<2m/Nx64><Tt/Cv>/totalAlarmLevel This attribute is only present in the top object of the containment tree of the Crocus CNV, crocusIfConv<2m/Nx64><Tt/Cv>. It displays the priority level of an unmasked, active alarm. When several alarms are generated at the same time, the highest priority level is shown.
  • Page 138 Example Suppose the following situation: • On a remote Crocus CNV TT the configChanged alarm of the crocusIfConvNx64Tt object is set to enabled in the remoteAlarmMask. In other words: crocusIfConvNx64Tt /remoteAlarmMask/configChanged = enabled. • On a central Crocus CNV CV the remoteAlarm of the top object is set to enabled in the alarmContactHighMask.

  • Page 139: General Alarms

    115/230 Vac back-up power supply has taken over. This alarm exists on the CV only. unknownState each time a new Crocus CNV is added to the disabled network and before the Orchid 1003 LAN has completed a first successful polling session.
  • Page 140 Orchid 1003 LAN on the Crocus CNV fails. For example, because of a loss of contact. Check the status attribute o1003/nmsgroup/ softConsistencyStatus to determine the problem. configConsistencyFail when the configuration consistency imposed by the disabled Orchid 1003 LAN on the Crocus CNV fails.

  • Page 141: G703 Onboard Alarms

    This alarm exists on the Crocus Nx64 CNV only. lossOfTiming when an external clocking mode is configured but enabled the external clock signal is not present. In that case the Crocus CNV switches to internal clocking mode. Reference manual...

  • Page 142: Interface Alarms

    RTS signal is detected. I.e. the connection enabled between the Crocus CNV and the DTE is down. (for RS530, V35, V36I) The linkDown alarm is only generated if the attribute rtsControl is set to external. If the attribute rtsControl is set to internal, the linkDown alarm will never be generated.

  • Page 143: Tma Subsystem Picture Of The Crocus Cnv

    10.2 Subsystem picture elements Note that the figures in this chapter are those of a Crocus CNV CV. Although the subsystem picture of the TT has a different layout, the interpretation of the visual indications is the same. Reference manual...

  • Page 144: Displaying The Subsystem Picture

    10.1 Displaying the subsystem picture To display the subsystem picture of the Crocus CNV, proceed as follows: Step Action Establish a link between TMA and the Crocus CNV through the auxiliary connector. Refer to Section 4.2 - Connecting to a Crocus CNV with TMA.

  • Page 145: Subsystem Picture Elements

    TMA subsystem picture of the Crocus CNV 10.2 Subsystem picture elements This section displays and labels the different elements of the subsystem picture. It also explains how the visual indications should be interpreted. Below, the Crocus CNV CV subsystem picture is displayed. Reference manual...
  • Page 146 Description LED indicators They reflect the actual status of the Crocus CNV. The LED indication on the subsystem picture corresponds with the LED indication on the Crocus CNV itself. For more information on the interpretation of the LEDs, refer to Section - Front panel LED indicators.

  • Page 147: Firmware Download

    Crocus CNV Firmware download 11 Firmware download This chapter explains how to download new firmware into the flash memory of the Crocus CNV. The following table gives an overview of this chapter. Section Title Page 11.1 Downloading with TMA 11.2 Downloading with TML 11.3...

  • Page 148: Downloading With Tma

    11.1 Downloading with TMA To download firmware with TMA, proceed as follows: Step Action Establish a link between TMA and the Crocus CNV through the auxiliary connector. Refer to Section 4.2 - Connecting to a Crocus CNV with TMA. In the TMA window select Tools Download…...

  • Page 149: Downloading With Tml

    (Total Memory Loader) to download files to the OneAccess devices through their auxiliary port • specifies the COM port of the computer connected to the Crocus CNV (in this example COM1) • returns graphical information on the download status •...

  • Page 150: Downloading In Boot Mode

    Start up in boot mode. The Crocus CNV can be forced in boot mode by setting the appropriate DIP switch to off. If a new software download is successfully completed, the DIP switch must be reset to on in order to restart operation from flash memory.

  • Page 151: Downloading Via The Orchid 1003 Lan

    Firmware download 11.4 Downloading via the Orchid 1003 LAN If many Crocus CNV Card Version modems need a firmware update, it is more efficient to use the software distribution feature of the Orchid 1003 LAN management concentrator. In that case, the firmware file that is present on the file system of the Orchid 1003 LAN is downloaded over the high speed bus to the Crocus CNV CV.

  • Page 152: Diagnostic Tests

    Diagnostic tests Crocus CNV 11.5 Diagnostic tests This chapter describes the diagnostic tests of the Crocus CNV. The following table gives an overview of this chapter. Section Title Page 11.5.1 Error test 11.5.2 Analogue loop 11.5.3 Remote digital loop 11.5.4 Digital loop 11.5.5...

  • Page 153: Error Test

    Start an ET test on the remote Crocus CNV. ⇒ The detector of the remote Crocus CNV receives this test pattern, and looks for possible errors in the pattern. The quantity of errors could be an indication of the G703 line quality.

  • Page 154: Analogue Loop

    How to use this test? Example: Start an ALET test on the Crocus CNV. This is a sort of self-test of the Crocus CNV. The quantity of errors (check the status attribute errorCount) could be an indication of possible problems on the Crocus CNV.

  • Page 155: Remote Digital Loop

    Diagnostic tests 11.5.3 Remote digital loop Initiating the RDL test establishes a digital loop on the remote Crocus CNV. This loop is compliant to loop 2 as described in the ITU-T recommendation V.54. The loop is situated immediately behind the DTE interface of the remote Crocus CNV, schematically...
  • Page 156 Diagnostic tests Crocus CNV Important remark On a Crocus 2M CNV CV and on a Crocus Nx64 CNV CV in unframed mode, it is not possible to start an RDL test or receive a DL test from the remote side when the device is strapped in short haul (i.e. longHaul = disabled).

  • Page 157: Digital Loop

    With this test, you can verify the same things as with the remote digital loop. The only difference is that the loop is not made on the remote Crocus CNV (as with RDL), but on the local Crocus CNV. This can be necessary when, for example, the remote Crocus CNV is unable to initiate a remote digital loop test.

  • Page 158: Interface Tests

    11.5.5 Interface tests For some DTE interfaces it is possible that the application (the DTE) initiates a test on the Crocus CNV via the interface. The following table gives an overview of which tests are available on which interfaces. It also gives a short description of the available tests.

  • Page 159: Technical Specifications

    Crocus CNV Technical specifications 12 Technical specifications This chapter gives the technical specifications of the Crocus CNV. The following table gives an overview of this chapter. Section Title Page 12.1 Crocus CNV types 12.2 Onboard G703 interface 12.3 Management interface 12.4...

  • Page 160: Crocus Cnv Types

    Technical specifications Crocus CNV 12.1 Crocus CNV types The basic types of the Crocus CNV are: • Crocus 2M CNV CV • Crocus Nx64 CNV CV • Crocus Nx64 CNV TT Both Table Top and Card Version can be powered with 230/115 Vac, -48 Vdc or 48 Vac. The Card Versions are powered via the CN4 card nest.

  • Page 161: Onboard G703 Interface

    Crocus CNV Technical specifications 12.2 Onboard G703 interface Onboard G703 interface specifications The onboard G703 interface have the following specifications: Parameter Description connector front RJ45 or rear line connector block (strap selectable) impedance 75 Ohm or 120 Ohm (strap selectable) compliance ITU-T G.703...

  • Page 162: Management Interface

    Connector Speed asynchronous through the auxiliary 9 pins subD 9600 bps, 8+N connector (on the Crocus CNV) synchronous through the Orchid 1003 LAN RJ45 800 kbps (on the CN4 card nest) 12.4 Auxiliary connector The auxiliary connector (sometimes also called control port) is a 9 pins subD connector that is labelled CTRL.

  • Page 163: Power Requirements

    Crocus CNV Technical specifications 12.5 Power requirements The input power recommendations are: • 230 Vac +/- 10%, 45 – 60 Hz • 115 Vac +/- 10%, 45 – 60 Hz • 48 Vdc (36 – 72 Vdc) Maximum power consumption: •...

  • Page 164: Safety Compliance

    Technical specifications Crocus CNV 12.8 Safety compliance • EN60950 • Class 1 equipment for Table Tops with 115/230 Vac internal power supply. • Class 3 equipment for … − Table Tops with 115/230 Vac external power supply adapter − Table Tops with -48 Vdc internal power supply −...

  • Page 165: Annexes

    Crocus CNV Annexes Annexes...
  • Page 166 Crocus CNV Annexes...

  • Page 167: Annex A: Product Information

    Crocus CNV Annex A: product information Annex A: product information The following table displays the product information of the Crocus CNV. Sales code Product name Description 171292 CROCUS 2M CNV TWIN-CV BU Dual 2Mbps transparent G.703 to modular Crocus interface converter for CN4.
  • Page 168 Annex A: product information Crocus CNV Annexes...

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