Intracom netMod User Manual
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Intracom netMod User Manual

Isdn network termination unit
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  • Page 1 ' s m a n u a l...
  • Page 2 ÉÍÔRACOM S.A., 2003 All copyright and industrial rights in this document and in the technical knowledge it contains are owned by INTRACOM S.A. and/or the third parties rightfully concerned. No part of this document nor any data herein shall be disclosed, reproduced or used for any purpose whatsoever without the prior written approval of INTRACOM S.A.

  • Page 3: Table Of Contents

    INTRODUCTION......................... 6 An Introduction to ISDN.......................6 netCon ............................7 netCon+ ............................7 netMod............................7 FAMILIARIZATION WITH netMod NETWORK TERMINATION UNIT ......9 Installation of netMod ........................10 Switch Settings...........................13 Indicators ............................14 netMod’s Functionality in Case of Emergency Operation............15 DTE port selection on emergency ....................15 U-line Connection........................16...
  • Page 4 CONNECTING TO A PC....................40 Installation of netMod........................ 40 Installation Procedure ....................... 40 Installation Completion ......................43 Configuring netMod with the netMod Task Bar Utility (nMtsk)..........45 RVS-COM Lite..........................46 RVS-COM Lite in brief ......................46 CONNECTING TO THE INTERNET ................. 47 Required Settings ........................
  • Page 5 User’s Manual of netMod Network Termination Unit Extended S-Registers “ATSN=X” .....................66 Permanent Storage of the S-Registers Settings..............71 Supplementary Services using AT Commands...............73 Multiple Subscriber Number (MSN) ................73 Call Waiting (CW) .....................74 Calling Line Identification Presentation (CLIP) ............75 Calling Line Identification Restriction (CLIR) ............76 Connected Line Restriction (COLR) .................76...
  • Page 6 Figure 2: Connections of NT1 type devices................. 8 Figure 3: netMod’s mounting points .................. 10 Figure 4: netMod’s Connections..................11 Figure 5: netMod’s switch settings on the motherboard card ..........13 Figure 6: netMod’s LEDs....................14 Figure 7: U-line connector ....................16 Figure 8: The connection points of plain analogue devices to RJ-11 jacks .......
  • Page 7 User’s Manual of netMod Network Termination Unit Terms and Abbreviations 2B1Q 2 Binary 1 Quaternary Line Code Alternate Mark Inversion Bandwidth Allocation Protocol BACP Bandwidth Allocation Control Protocol Bandwidth on Demand Bits per second Basic Rate Access Data Terminal Equipment...

  • Page 8: Introduction

    (Figure 1). The U-line transfers the digital signal that corresponds to the 2B+D channels. Different types of terminal devices can be connected to the NT1 (ISDN or plain analogue terminals). In order to cover up the different subscriber’s needs, INTRACOM offers the following types of Network Termination units: •...

  • Page 9: Netcon

    17 and 18 respectively). netMod netMod, besides offering the possibilities of connecting ISDN terminal devices and plain analogue devices to the ISDN network, also offers the possibility of connecting a Personal Computer (PC) to the Internet (or similar networks) without using any extra equipment.

  • Page 10: Figure 2: Connections Of Nt1 Type Devices

    The connection of NT1 type devices to the ISDN exchange and to the subscriber terminal devices is shown in Figure 2. Figure 2: Connections of NT1 type devices Figure 2 clearly shows (shade levels) that netMod surpasses the potentiality of netCon+, and netCon+ surpasses the potentiality of netCon.

  • Page 11: Familiarization With Netmod Network Termination Unit

    User’s Manual of netMod Network Termination Unit FAMILIARIZATION WITH netMod NETWORK TERMINATION UNIT netMod is equipped with: • 2×RJ-45 jacks for ISDN terminal devices connection. These jacks are the S-Interface (S-bus) ports of the device. • 2×RJ-11 jacks for analogue terminal devices connection. These jacks are the analogue ports (ab1 and ab2) of the device.

  • Page 12: Installation Of Netmod

    User’s Manual of netMod Network Termination Unit Installation of netMod netMod can be wall mounted or desktop. Wall mounting is achieved through the two mounting points, located on the back side of netMod (the distance between the two mounting points is 10cm), as shown in the next figure.

  • Page 13: Figure 4: Netmod's Connections

    RJ-11 jack. • Plug the AC cable to the AC mains. • Check the orange LED status on the topside of netMod: The AC Mains Power LED (M.P.) should be lit. • Depending on the devices that you want to connect, use the relevant jacks: •...
  • Page 14 Follow the steps hereafter in order to install the netMod: • Turn off the power of the PC (only for RS232 connections). • Connect the male end of the 9-pin cable to the serial port of netMod or the USB connector to the USB receptacle of the netMod •...

  • Page 15: Switch Settings

    User’s Manual of netMod Network Termination Unit Switch Settings netMod is equipped with 3 on-board switches, located just behind the front accessible connectors (see Figure 5). By using these switches, the subscriber can define the desired settings. These settings are: •...

  • Page 16: Indicators

    B channels are occupied by a terminal connected on the S-bus (ISDN telephone, ISDN external TA) B channels are not occupied Continuously ON (green) The communication between the netMod and the PC has been established Flashing (green) Data transfer is activated...

  • Page 17: Netmod's Functionality In Case Of Emergency Operation

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  • Page 18: U-Line Connection

    User’s Manual of netMod Network Termination Unit U-line Connection netMod is equipped with an RJ-11 (located in the bottom side) jack to connect the U-line (see Figure 7), with the following connection points (see bottom of netMod). Description not connected...

  • Page 19: Terminal Devices Connection

    User’s Manual of netMod Network Termination Unit Terminal Devices Connection Connecting Analogue Devices netMod is equipped with two RJ-11 jacks to connect analogue devices, such as analogue telephones, FAX G3, etc. (Figure 8). Description not connected not connected Ring not connected...

  • Page 20: Connecting An Isdn Device

    User’s Manual of netMod Network Termination Unit Connecting an ISDN Device netMod is equipped with two RJ-45 jacks for ISDN devices connection (see Figure 9). The subscriber can directly connect up to two devices to the corresponding jacks, or create a passive bus (S-bus) for the connection of more than two devices (see paragraph “CREATION OF A PASSIVE BUS (S-BUS)”...

  • Page 21: Connecting A Personal Computer

    An RS232 cable is required for connecting netMod to the PC with male connector DB9 at one end (netMod’s side), and female connector DB9 at the other end (PC’s side). For the USB port you need a cable with a connector Type B for netMod side and a connector Type A for PC side.

  • Page 22: Isdn Services

    The Supplementary Services are services offered via ISDN connections and are described in detail in the next Chapter. netMod also supports some other services known as Additional Services, which can be activated / deactivated in the same way as Supplementary Services.
  • Page 23 User’s Manual of netMod Network Termination Unit netMod does not activate / deactivate the supplementary / additional services on the S-bus. Signalling and data on the S-bus are transferred transparently through the netMod. The subscriber, following the user’s instructions of the terminal device connected to the S-bus, can activate / deactivate the supplementary / additional services, separately on each device.

  • Page 24: Detailed Description And Use Of Supplementary Services

    (MSN) to a single BRI line. These subscriber numbers are assigned and partitioned from netMod to the analogue ports (ab1 and ab2) and to the serial port. MSN numbers are assigned to the ISDN terminals from the terminal’s keyboard, based on the corresponding instructions given by the manufacturer.

  • Page 25: Call Waiting (Cw)

    User’s Manual of netMod Network Termination Unit Call Waiting (CW) When this service is activated on an analogue port, the subscriber during his/her active call receives a tone indicating an incoming call. The incoming call is placed in a waiting state for a certain time period and the subscriber...

  • Page 26: Call Hold And Enquiry Call (Ch)

    User’s Manual of netMod Network Termination Unit Call Hold and Enquiry Call (CH) The subscriber can have an active call on line and make a second call from the same analogue port. The key combinations are listed below: FLASH • The key to place the active call on hold and wait for the dial tone.

  • Page 27: Calling Line Identification Presentation

    FSK signalling to a visual indication (e.g. INTRACOM’S IRIS 6020-CID). Note that if the CLIP service is available to the subscriber, netMod initially allows the forwarding of the calling subscriber number through FSK signalling, to the called subscriber terminal device connected to the analogue ports ab1 and ab2.

  • Page 28: Calling Line Identification Restriction (Clir)

    User’s Manual of netMod Network Termination Unit Calling Line Identification Restriction (CLIR) Calling Line Identification Restriction is a service offered to the calling subscriber to restrict the presentation of his/her calling party’s number to the called subscribers. The following keys combinations are valid, only when the user is a subscriber of the CLIR service in a call-by-call basis.

  • Page 29: Advice Of Charge During The Call (Aoc-D)

    User’s Manual of netMod Network Termination Unit Advice Of Charge During the call (AOC-D) The Advice of Charge service informs the calling subscriber about the charge of his/her call, during the call. The subscriber should have the proper equipment in order to convert the metering pulses into an optical indication.

  • Page 30: Terminal Portability (Tp)

    Some of the Call Diversion services are directly linked to the Multiple Subscriber Number service. The subscriber has to assign MSN numbers to the analogue ports of netMod to make the call diversion service functional.

  • Page 31: Call Forwarding Unconditional (Cfu)

    User’s Manual of netMod Network Termination Unit 12.1. Call Forwarding Unconditional (CFU) When the Call Forwarding Unconditional service is activated, all incoming calls that refer to subscriber number of the called subscriber, are forwarded to another pre-selected number destination. • The CFU service for the subscriber number of an analogue port that is stored in a memory location X (X=’1’...

  • Page 32: Call Forwarding On Busy (Cfb)

    The function of this service requires the assignment of MSN on the corresponding port. When a netMod port is busy, all incoming calls that concern a subscriber number (MSN) of the called subscriber port, are forwarded to another pre-selected number destination.

  • Page 33: Call Forwarding On No Reply (Cfnr)

    User’s Manual of netMod Network Termination Unit 12.3. Call Forwarding on No Reply (CFNR) In case of no answer in an incoming call for an subscriber number, the call is diverted to another pre-selected number destination. • The CFNR service for the subscriber number of an analogue port that is stored in a memory location X (X=’1’...

  • Page 34: 12.4. Call Forwarding Unconditional To Voice Mail

    User’s Manual of netMod Network Termination Unit 12.4. Call Forwarding Unconditional to Voice Mail When the Call Forwarding Unconditional to Voice Mail function is activated, all incoming calls that refer to a certain terminal are forwarded unconditionally to a Voice Mail box of the Operator (if the service is available).

  • Page 35: Detailed Description And Use Of Additional Services

    Functional / Keypad Protocol If the ISDN exchange is using the FUNCTIONAL protocol to activate / deactivate the supplementary services, you do not need to program anything. netMod initially supports the FUNCTIONAL protocol. If the ISDN exchange supports the KEYPAD protocol for the activation / deactivation of supplementary services, then it has also to be activated in netMod.

  • Page 36: Delayed Clear Back

    Incoming Call Management Incoming call Management is specific for using in analogue PBX’s. This feature is ideal when you have not MSN numbers available or programmed in netMod. We can program that only one POTS will be ringing at incoming calls.

  • Page 37: Distinctive Ringing

    Pause 3600ms Polarity Reverse With the activation of this function, netMod will reverse the polarity of each POTS port, when the connected telephone device answers or releases a telephone call. This functionality is provided only on the POTS ports and should be supported from the connected telephone device.

  • Page 38: Call Pickup

    Lift your handset *82# • Press • Answer the call Note that netMod also supports the following extra services on both analogue ports ab1 and ab2: • Alarm Call • Voice Mail etc. The detailed description and use of these services is provided by the...

  • Page 39: Supplementary Services And Terminal Devices

    (analogue devices, ISDN devices, Personal Computer) and various supplementary services to the subscriber. For the best use of terminal devices connected to netMod, attention must be given when using supplementary services, during establishment, duration or answer of a call.

  • Page 40: Connecting A Videophone

    Connecting a FAX or MODEM to the Analogue Ports When a FAX or an analogue Modem is connected to an analogue netMod’s port, it is suggested: • to deactivate the CW (Call Waiting) service on this port. An audio tone is generated when this service is active and can interrupt the transmission of a FAX or the connection of an analogue modem.

  • Page 41: Communication With An Isdn Modem

    MSN numbers assigned to the data port. When the analogue or the data ports have no MSN numbers assigned, they accept any call (netMod does not make any comparison of numbers). When the device connected to the S-bus has no MSN numbers...

  • Page 42: Connecting To A Pc

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  • Page 45: Installation Completion

    System Hardware”) and under the selection «Modems» you will see “Intracom netMod USB ver.xx” and/or “Intracom netMod Winxxxx”. In case of a USB installation, you can check under “the USB controllers” (Universal Serial Bus controllers) for the device installation of “CAPI nMUSB Driver ver x.x.x”...
  • Page 46 For all latest news, manuals, drivers’ versions etc, consult our special Helpdesk (http://netmod.intracom.gr). Configuration and installation instructions for other operating systems can be found in the netMod CD-ROM and in our Helpdesk (http://netmod.intracom.gr). For the correct installation of the USB driver, please follow exactly the previous described procedure.

  • Page 47: Configuring Netmod With The Netmod Task Bar Utility (Nmtsk)

    B-channels status using the colour code of netMod’s LEDs, as well as about the incoming and outgoing call type performed at that moment. By double clicking (or simple right-clicking and selecting “Settings”) on this icon the netMod configuration application window will appear on your screen.

  • Page 48: Rvs-Com Lite

    Fully compatible with the standard CAPI 2.0 and with the netMod CAPI drivers. Support and serial connection specifically for netMod use. RVS-COM Lite is an additional software package for netMod but is provided only upon request of the telephone service provider. Therefore, it may not be available in all countries.

  • Page 49: Connecting To The Internet

    CONNECTING TO THE INTERNET Required Settings Once you have netMod installed correctly you can use it to be connected to the Internet. To do so you must have an account to an Internet provider for ISDN Internet access. You need an Internet access account via dial-up ISDN. The old simple dial-up account will not operate.
  • Page 50 User’s Manual of netMod Network Termination Unit If there are some discrepancies between the values of the window on your screen and this window, set the correct values accordingly. Do the same for the <Connection> and <Options> tabs. If you have finished, click <OK> to return to the initial window <Make New Connection>...
  • Page 51 User’s Manual of netMod Network Termination Unit Enter the country code, the area code and the calling number with the correct values, corresponding to your Internet Service Provider. Click <Next> to continue. In the last window click <Finish>. Your new connection has been added to the <Dial-Up...
  • Page 52 User’s Manual of netMod Network Termination Unit In the next dialogue window, enter your username and password, as provided by your ISP. Click on <Connect>. If all the above steps have been followed correctly your computer will soon be connected to the Internet and you will be able to run a WWW browser, an FTP (File Transfer Protocol) program or any other Internet application.

  • Page 53: Connecting To The Internet Using Ppp Or Ml-Ppp Protocol

    If the subscriber wishes to use both B-channels for the connection, he / she has to give the command atb0 to netMod and to make it negotiate the ML-PPP. Before you activate this service, it is important to be registered as Internet subscriber at 128kbps, and to be sure that the ISP supports connection with the use of the ML-PPP protocol.
  • Page 54 User’s Manual of netMod Network Termination Unit In case of connection, the H/W flow control has to be activated in the computer’s data port used for the connection to netMod. The way of activation / deactivation of ML-PPP through the <Dial Up Networking> of Windows’...
  • Page 55 / below these limits, so that the B-channel can be added / subtracted, are defined through AT Commands as described in the chapter “AT COMMANDS”. INTRACOM’s Web site http://netmod.intracom.gr/ includes all the latest news concerning netMod.

  • Page 56: Firmware Update

    Once you have connected and activated netMod, you can use the command ATUPX. netMod will then ask to confirm your selection. If you answer ‘Y’ you MUST download the new firmware. Be aware to have the correct file before you answer ‘Y’. Adjust the communication parameters to 115200bps 8N1 with hardware flow control and use the protocol XMODEM to load the firmware as a send file procedure.
  • Page 57 • On the <HyperTerminal> window type: at netMod will answer OK. • Type: atupx netMod will give a message for updating the software. • Type: Y netMod will reset the previous version. • Once you receive the OK message, select from the main menu <Transfer> and then <Send file>.

  • Page 58: Communication By Other Means

    User’s Manual of netMod Network Termination Unit COMMUNICATION BY OTHER MEANS A PC connected to netMod is able to communicate with another PC connected to a corresponding ISDN device. A basic requirement to achieve this communication is that the other device has to use one of the communication protocols that netMod uses. netMod uses the PPP, ML-PPP, Transparent PPP and Voice Transparent protocols, which are described in more details below.
  • Page 59 User’s Manual of netMod Network Termination Unit Once the connection is established, you can have access to the hard disk of the remote PC (when the File Sharing is activated on the Dial-Up Server). To do so you can use the Find Computer on the Start menu.

  • Page 60: Transparent Modes

    The only difference is that these data will be transparently transferred by netMod. Only CRC inspection is done in each packet. When an error is found, the packet is rejected. netMod uses the unrestricted digital bearer capability for the outgoing calls and does not accept incoming voice calls and 3.1kHz audio.

  • Page 61: Data Transparent Mode

    It does not accept calls with speech or 3.1kHz audio bearer capability. Use this mode for direct communication with another netMod that also uses this mode. Use a simple communication program (like Hyper Terminal). You can not use this mode for communication with other modems.
  • Page 62 In order to make an AO/DI call, no additional software is required to be installed on your PC. All you need is Windows’ DialUp networking. When netMod is operating with one or both B channels open for data transmission, the AO/DI connection (i.e. 9600 bps range) is placed out of operation.

  • Page 63: At Commands

    The AT COMMANDS is a group of standard commands, used for the control of communication devices like netMod. Each command starts with the AT prefix and then follows the main command body that states which function has to be performed.

  • Page 64: Basic "At" Command Set

    User’s Manual of netMod Network Termination Unit Basic “AT” Command Set Command Option Function and description Escape sequence code, entered in data state, wait for modem to return to command state All the Following Commands Require an “AT” Prefix Go on-line in answer mode Select ISDN Teleservice ‘B’...
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  • Page 66: Extended "At&" Command Set

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  • Page 67: Extended At! Command Set (Ao/Di - X.25 Functionality)

    User’s Manual of netMod Network Termination Unit &ZI? Display the phone number for port ab1, port ab2 & DTE Port. &ZO? Display the own phone number for port ab1, port ab2 & DTE Port. &ZON=X Write own phone number X. The number specified will be used as the calling party number while dialling (in the outgoing SETUP message).

  • Page 68: Basic S-Registers "Atsn=X

    User’s Manual of netMod Network Termination Unit Basic S-Registers “ATSN=X” Command Function and Description Set the number of rings on which the modem will answer. A 0 value disables auto-answer Define escape code character, default <+> (43dec.) Extended S-Registers “ATSN=X”...
  • Page 69 User’s Manual of netMod Network Termination Unit S40= Bit mapped register No result code displayed in answer mode S42= Bit mapped register This register defines the RING answer format. Possible values and the corresponding RING formats are listed below: RING RING <Called Party Number>...
  • Page 70 User’s Manual of netMod Network Termination Unit S84= Bit mapped register Do not drop any channel if both B channels are used for data bunlde connection (ML/PPP) in case of an incoming voice call destinated to port ab1. Drop one B channel if both B channels are used for data bundle connection (ML/PPP) in case of an incoming voice call destinated to port ab1.
  • Page 71 User’s Manual of netMod Network Termination Unit Disable Total and Last call’s charging counters of analogue adapter, ab1. Enable Total and Last call’s charging counters of analogue adapter, ab1. Disable Total and Last call’s charging counters of analogue adapter, ab2.
  • Page 72 Sub-threshold for BOD in kbps unit (*)Default values. (**) Some of the signalling monitoring commands may be not available in some software versions of netMod (***) Some protocols described in Register S82 may not be available in some software versions of netMod...

  • Page 73: Permanent Storage Of The S-Registers Settings

    User’s Manual of netMod Network Termination Unit Permanent Storage of the S-Registers Settings The changes in the S-Registers settings are stored in netMod’s RAM memory. This means that when we restart the system the values in the S-Registers are the factory pre-set values.
  • Page 74 User’s Manual of netMod Network Termination Unit The key combinations that change the values in the S-Registers are the following: *43# Activates the Call Waiting service #43# Deactivates the Call Waiting service **10# FUNCTIONAL Protocol Activation **11# KEYPAD Protocol Activation...

  • Page 75: Supplementary Services Using At Commands

    User’s Manual of netMod Network Termination Unit Supplementary Services using AT Commands Some of the Supplementary Services can be activated / deactivated through the use of AT COMMANDS. Multiple Subscriber Number (MSN) By using AT commands, you assign or delete (MSN) numbers on the memory for each of netMod’s analogue port (ab1 or ab2).

  • Page 76: Call Waiting (Cw)

    Call Waiting (CW) Using AT Commands write the proper values in the S79-Register to activate / deactivate the supplementary services on each of netMod’s analogue port (ab1 or ab2). ATS79=0 deactivates the service on both analogue port ab1 and ab2...

  • Page 77: Calling Line Identification Presentation (Clip)

    Calling Line Identification Presentation (CLIP) Using AT Commands the called subscriber can write the proper value on the S84-Register to allow / restrict the presentation of the calling party number on both analogue netMod’s ports. ATS84=0 allows the forwarding of the calling party number to the called subscriber’s terminal devices connected to the analogue ports ab1 and ab2, in OFF HOOK and ON HOOK state.

  • Page 78: Calling Line Identification Restriction (Clir)

    Your number will not appear on the device of the called subscriber when calling from the ab2 port. ATS85=3 activates the service on both analogue ports ab1 and ab2 of netMod (your number will not appear on the device of the called subscriber).

  • Page 79: Advice Of Charge During The Call (Aoc-D)

    Advice Of Charge During the call (AOC-D) Using AT commands write on the S89-Register the proper values to allow / restrict the forwarding of metering pulses on each of netMod’s analogue port (ab1 or ab2). ATS89=0 deactivates the service on both analogue ports ab1 and ab2.

  • Page 80: Additional Services Using At Commands

    Delayed Clear Back By using AT commands write on the S83-Register the proper values to activate / deactivate this service on each of netMod’s analogue port (ab1 or ab2). ATS83=0 activates the service on both analogue ports ab1 and ab2.

  • Page 81: Creation Of A Passive Bus (S-Bus)

    User’s Manual of netMod Network Termination Unit CREATION OF A PASSIVE BUS (S-BUS) ISDN devices can be connected to the netMod via the S-bus (four wire cable), by the following ways: Short Passive Bus 1 netMod is connected to the ISDN devices via the S-bus as shown in the figure below: Figure 11: Short passive bus 1 connection The switch SW1 has to be in position “ON”...

  • Page 82: Short Passive Bus 2

    User’s Manual of netMod Network Termination Unit Short Passive Bus 2 netMod can be connected to the S-bus as shown in the figure below: Figure 12: Short passive bus 2 connection The switches SW1 and SW3 (see Figure 5) must be in position “OFF”. The distance of 200m is achieved for a cable of 0.6mm diameter.

  • Page 83: Extended Passive Bus

    User’s Manual of netMod Network Termination Unit Extended Passive Bus netMod is connected to the end of the S-bus as shown in the following figure: Figure 13: Extended passive bus connection The switches SW1 and SW3 (see Figure 5) must be in position “ON”. The distance of 500m is achieved for a cable of 0.6mm diameter.

  • Page 84: Point-To-Point Connection

    User’s Manual of netMod Network Termination Unit Point-to-point Connection In a point to point connection, only one terminal device can be connected to netMod via the S-bus, at a maximum length of 1000m using a cable of 0.6mm diameter. Figure 14: Point-to-point connection The switches SW1 and SW3 (see Figure 5) must be in position “ON”.

  • Page 85: Technical Characteristics

    User’s Manual of netMod Network Termination Unit TECHNICAL CHARACTERISTICS U-line ♦ In compliance with ETSI ETR 080 ♦ Line code 2B1Q ♦ Output Level 2.5V peak at 135Ω Load ♦ Carrier twisted copper pair ♦ Bit rate 160 kbps ♦ Net bit rate 144 kbps ♦...
  • Page 86 User’s Manual of netMod Network Termination Unit RS232 Interface V24, asynchronous communication ♦ Interface D-9pin connector According to USB V1.1 USB Interface ♦ Interface USB receptacle type B Power supply ♦ Normal operation locally from 230 VAC (+10%/-10%), 50Hz with power consumption <7.5W...

  • Page 87: Malfunction Detection And Troubleshooting

    User’s Manual of netMod Network Termination Unit MALFUNCTION DETECTION AND TROUBLESHOOTING Malfunction Possible Cause Correcting Action The green led is off. The device is not Connect the device to the AC connected to the AC mains Power Supply (the AC mains.
  • Page 88 User’s Manual of netMod Network Termination Unit Malfunction Possible Cause Correcting Action • Be sure that the CLIP You have a device that Your device does not service has been activated supports the CLIP service recognise the CLIP by the operator.
  • Page 89 User’s Manual of netMod Network Termination Unit Malfunction Possible Cause Correcting Action • Be sure that during the netMod is installed but you There is no installation you assigned the can not give an AT communication right port on your PC (COM1 command.
  • Page 90 User’s Manual of netMod Network Termination Unit Malfunction Possible Cause Correcting Action • Be sure that you have given You have an account for an The second the atb0 command on ISDN connection at 128kbps B-channel is not netMod. but you do not have a working.
  • Page 91 INTRACOM S.A. HELLENIC TELECOMMUNICATIONS & ELECTRONICS INDUSTRY Markopoulo Ave. 190 02 Peania, Athens, Greece Tel.: (+30 210) 667 9000,Fax: (+30 210) 667 9001 http://www.intracom.gr...

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