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FAQ - Known Problems

Internet error connections.

Question

I'm trying to connect to the internet but I receive one of the following error connection codes: 678, 633, 691, 692, 619, 680, 768, 732, 718.

Answer

Please refer to the following situations according to the received error code:

678: Make sure that the ISP number you are dialling is correct and that your phone line is connected and works properly. In case the call baring service is activated on the line, you have to contact your telecommunications provider in order to have this service deactivated.

633: You have installed a communications software program that is occupying the communication port. Usually this kind of software relates to a fax utility, mobile phone etc. You have to uninstall or temporarily disable these programs before using the port to connect to the Internet.

691: Check that your ISDN account, username and password are valid and correct. Contact your ISP to verify them.

692: Check that the modem is connected properly to the mains and the power led is on. Check your installation and verify that the device is working properly. Use the diagnostics procedure (as described in the modem's users manual) to see if you receive a response from the modem, when sending AT commands. Check also the "Advanced/ Extra Settings" field (Device Manager > Modems > netmod > Properties > Advanced tab > Extra Settings) for any mistyped or unsupported command. Reset the netΜod and/or restart your computer.

619: Check if your ISP is using another phone number for the ISDN connection. Reset the netΜod and/or restart your computer.

680: Check your settings on the connection icon as it is possible that you selected an analogue modem for the Internet connection (e.g. an internal-card 56Kbps modem) and not the netMod

768: Check the advanced extra initialization commands (Device Manager > Modems > netmod > Properties > Advanced tab > Extra Settings). Delete any unknown command.

732: There is a problem with the PPP (protocol) negotiation, contact with your ISP in order to configure your setting according to your ISDN account (64Kbps or 128Kbps).

718: Check the properties of your connection (from its icon) and click "configure". From the hardware features list select only the option "enable hardware flow control". In case of failure, delete the old connection and create a new one.

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Question

My PC is attached to the netMod through a USB connection. While I am connected to the Internet I am facing a lot of problems. My connection is either interrupted or not responding, while my computer crashes often and unexpectedly with blue screen (or restarted).

Answer

Check if there is any conflict between netMod with any other devices of your system. In case your PC is equipped with an internal card-modem, we recommend installing the netMod to the communication port COM3. Remove both modems and reconnect the USB cable without restarting your computer. Check that you have installed the specific USB drivers for your main board USB system and not standard or generic drivers. Contact the computer's manufacturer to help you about this subject.

Update your firmware and the USB drivers for netMod according to the installation guides of our webpage.

Alternatively, if your computer is equipped with serial (RS232) ports then you can use a serial port connection to the netMod. The ports COM1 & COM2 use specific IRQs (interrupt request) from the BIOS without sharing these IRQ with any other device.

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Question

I plug the netMod but my computer does not recognize it or recognizes it as an "unknown device".

Answer

Check that your line and the power led is working properly. Try to reset the netMod (black button inside) or plug the USB cable to another USB port of your computer. Afterwards, restart your computer and open the Device Manager. If you find the netMod device ticked with an exclamation mark, then remove (uninstall) this device. Then run the installation driver setup program and plug the USB cable. Do not use long connection cables. The limit for a USB modem cable is 5 meters and for the serial port is 10 meters. In case your computer is located far away from the netMod, you can extend the U line cable.

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Question

I don't know which driver to select or how to install my netMod if I don't have any drivers.

Answer

The drivers that are available on our website work well with all home-computer operating systems. Check: engl_install-guides.htm

However, you can install the netMod without using any specific drivers. Just connect it via a serial RS232 port as standard modem 33600bps.This modem is available to the most windows operating systems. You can install this type of modem by using the "Add hardware" wizard, skipping search and selecting "from a specified location".

For Macintosh operating systems, please use the available script drivers or select (from the list of modems) the "3com impact isdn 64K" (which is a compatible modem).

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Question

Ι have tried to use many fax programs with netMod but none worked properly.

Answer

The only compatible with netMod available software program is "RVS-COM Lite". It is a program created by Living Bytes and gives you the ability to send-receive faxes and also to make phone calls from your PC. For more information on how to acquire this program, please visit their web site www.isdn-gate.de. This is just a recommendation notice and it does not imply by any means that INTRACOM is endorsing or supports this specific company or its products. Alternatively, you can use an analogue fax/data modem, which you can connect to one of netMod's analogue ports, in order to use your favourite fax program.

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Question

My phone line is interrupted very often.

Answer

Contact your telecom operator to perform a check on your telephone line.

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Question

During the netMod installation procedure in windows XP, the following warning message pops up: "This driver has not passed windows logo testing to verify it's compatibility with Windows XP". I have two options to "continue anyway" or to stop the installation. Is the netMod driver compatible with Windows XP?

Answer

netMod is compatible and has been thoroughly tested with Windows XP. Please select continue anyway (Microsoft's message) to finish the installation.

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Question

When I plug a second isdn device it does not work

Answer

For the connection of more than 2 isdn devices you must create a passive bus and each bus should be terminated.

The termination of the passive bus (S bus) is achieved by terminating the transmit (Tx) and the receive (Rx) with two 100 ohm (1/4W) resistors. For more information about the S-bus connection termination procedure, please refer to netMod users manual.

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Question

I cannot upgrade the firmware of my netMod

Answer

The easiest way to upgrade the netMod firmware is by using the latest version of the Configuration Manager, a special for this purpose program that you can download from our website.

Please also download the latest firmware for your netMod hardware. Then run the Configuration Manager, select "update" and give the right filename software. The update procedure will be done automatically.

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Question

I am trying to install my netMod in Linux but I cannot find installation guides for my Linux distribution.

Answer

You can find the information about the setup and configuration process on our web site.
The instructions for the setup of the kernel are common for every Linux distribution.
For the proper installation of the netMod device in Linux you have to study carefully the setup process of the kernel.

If you need more information please visit the following websites:

• www.linuxdoc.org (it's the largest resource center for Linux)
• www.linux-usb.org (concern the Linux and USB support)

You can also address for help to the Linux distribution company.

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Question

Which commands should I use to plug a router to netMod via a serial port?

Answer

The initialization commands for a router are the following.
Initial string: AT&FB40 (for isdn 64K) AT&FB0KAS0 (for isdn 128K)
Pre initial: AT,
Dial up string: ATD,
Hang up string: ATH,
Escape string: +++

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Question

How can I transfer a phone call between the two analogue ports?

Answer

You can transfer a call to the other analogue port of netMod by pressing flash *19# then without hearing any ring, pick-up the other phone and press #19# to complete the call transfer.

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Question

Can I connect my netMod to my computer wirelessly?

Answer

You cannot connect your netMod wirelessly because it doesn't have a wireless interface.

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Question

Can I use the utility software "PCanywhere" with netMod?

Answer

In order to achieve data communication between two netMods via the utility software PCanywhere, one has to type the command ATS82=80(data transparent protocol) into the extra settings field (Device Manager > Modems > netmod > Properties > Advanced tab > Extra Settings) of both netmod's.

Most of the communication utility software programs (such as the Pcanywhere) require the activation of the data transparent protocol. By using the command "ATS82=80" one cannot connect to the Internet. For an Internet dial-up connection please enter the default command "ATS82=74" (PPP/ML protocol).

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Question

How can I program ISDN devices?

Answer

The ISDN devices can only be programmed by using the appropriate manufacturer's instructions.

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Question

How can I uninstall the previous USB drivers of netMod?

Answer

First activate the "show hidden files and folders" option from Windows Explorer (Tools>Folder Options>View). Then open the directory C:\winNT\inf\ or the directory C:\windows\inf\. By using a text editor open every file with the name oemx.inf (where x=0,1,2,3,..). Search in very file for the string INTRACOM S.A. and delete all files that contain this string. If you delete an oemx.inf file then you also have to delete and the equivalent oemx.pnf file.

Then remove the following files:

• nMtsk.exe c:\windows
• nmusblf.sys c:\windows\system32\drivers (If there is)
• nmusb.sys c:\windows\system32\drivers

In order to remove the nMtsk.exe you must first disable the icon nMtsk, which shows the status of the channels on the taskbar. Right click on the nMtsk icon at the taskbar and choose '"Close". Then press "alt-ctrl-delete", go to "Processes" and select the "nmtsk.exe". Choose "End" to end this process.

Open the Device Manager (Control Panel > System > Hardware > Device Manager) or (Control Panel > System > Device Manager). Select under Modems the INTRACOM netMod. Right-click and select Uninstall to uninstall it.
Expand the Universal Serial Bus Controllers (USB) entry on the Device Manager. Uninstall the CAPI or INTRACOM netMod USB device, if present.

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Hardware Conflict

Question

I installed the driver for my IrDA port and my old analog modem. After that, netMod stopped responding.
What is the problem? What should I do now?

Answer

This is likely caused by a faulty configuration of your system resources - probably a conflict in hardware level between netMod and the devices already installed. Maybe some new COM ports occupy the IRQ and memory space, which are used by netMod's USB virtual port.

Try to uninstall or change the resources of these devices and see if netMod works again.

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"Port is already open"

Question

I try to use my netMod to connect to the Internet but I get the message "Port is already open".
What should I do?

Answer

This is a common problem for many users. Check if some software occupies the COM port where netMod is installed. Try to disable this software.

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ML/PPP connection between PCs using netMod

Question

I try to make a multi-link connection to another PC using the DialUp networking and two netMods. I get an error message and the connection is dropped.
What happened?

Answer

Upgrade both netMods with the same, newest software version. Be sure, that you have enabled the multi-link functionality to the remote netMod by adding the "ATB0" command to the Extra Settings in the same way as for the client netMod. Do not use any encrypted authentication methods at both sides, use clear text (Password Authentication Protocol).

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R.P LED is blinking

Question

After the software upgrade my R.P. LED is blinking.
Is there something wrong with that ?

Answer

No, this is a normal behaviour. It is a new feature, which has been added to all new software versions.

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Macintosh System older than 9.x

Question

I have a Macintosh with an operating system older than 9.x. My netMod USB does not work. The systems asks for a driver.
What should I do?

Answer

Macintosh Operation Systems older than Version 9.0 don't support USB modems.
Ask your local Macintosh dealer for an upgrade of your Operating System.

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Unknown netMod USB devices

Question

My netMod USB does not work. The Device Manager window displays two unknown netMod USB devices.
How can I resolve this problem?

Answer

Open the Device Manager by a right Mouse Click on:

in the Windows Explorer, choose Properties, select the Device Manager tab and double-click on Universal Serial Bus controllers.

If there is a device called USB Composite Device, click on it and then click on the button Remove to delete this component.

Restart your PC and when the Hardware Wizard finds your netMod follow the instructions given in your netMod manual.

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Green LED off

Question

I install netMod but the green LED is off. What is the problem?

Answer

Reason:
The device is not connected to the AC mains.

What to do:
Connect the device to the AC mains Power Supply.

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Dial tone missing

Question

My netMod is not supplied by AC mains. I Hook-off and I do not hear the dial tone. How can I overcome this problem?

Answer

Reason:
This particular device does not work in cases of emergency.

What to do:
If your device is an ISDN device, be sure that it can work in emergency and then check if the switch SW3 is at the 'ON' position If your device is an analogue device, be sure that the SW3 switch is at the 'OFF' position

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Supplementary services

Question

Some of the supplementary services do not function on the analogue ports. What can I do to make them function?

Answer

Reason:
These supplementary services have not been activated on the operator's line.

What to do:
Check if the local ISDN Exchange supports the FUNCTIONAL or KEYPAD protocols to activate / deactivate the Supplementary Services and set your netMod accordingly Ask from the operator of the Exchange to activate the desired supplementary services on your line.

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Analog modem or Fax

Question

I connect an analogue modem or Fax on the analogue port, but when I accept an incoming call my modem or Fax connection is interrupted. How can I avoid these interrupts?

Answer

Reason:
The Call Waiting service has been activated on this port.

What to do:
Deactivate the Call Waiting service on the port that the analogue modem or Fax is connected.

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CLIP Service

Question

I connect a device capable of serving (CLIP) on the analogue port, but the calling party's number does not appear. How can I obtain the calling party's number appearance?

Answer

Reason:
Your device does not recognise the CLIP service.

What to do:
Be sure that the CLIP service is activated by the operator Be sure that your device is working with FSK signalling Raise the level of transmitted signal, by using the command: AT/CLIPLEVEL=10

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AT command not accepted

Question

After completing the installation of netMod why can't I give an AT Command?

Answer

Reason:
There is no communication between netMod and the PC.

What to do:
Be sure that during the installation you assigned the right port on your PC (COM1 or COM2) for the communication with netMod. Be sure that netMod is connected with the AC power mains of 230 VAC. Be sure that the cable between netMod and your PC is in good condition and right connected.

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Internet Connection

Question

Why can't I be connected to the Internet via netMod using my old account?

Answer

Reason:
Incompatible equipment technology of Internet Service Provider (ISP).

What to do:
Your old account is valid for connection with an analogue modem. You have to make a new application for an ISDN connection to the Internet. You can select between 64kbps or 128kbps rates.

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Programs don't work

Question

Why do the programs that I used with my modem before (fax, voice mail etc.) not work using netMod?

Answer

Reason:
Software Incompatibility

What to do:
The programs that you used before were compliant with analogue modems. You can use programs which are compliant with ISDN applications on your PC and are compatible with netMod. (RVS-COM).

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Data rate 64 kbps - but slow

Question

I have an account for an ISDN connection at 64kbps but I do not have a satisfactory data rate transfer. What is the problem?

Answer

Reason:
Your Internet Service Provider (ISP) fails to provide greater rates of data transfer.

What to do:
Try not to be connected with the ISP at busy hours.

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Data rate 128 kbps - but slow

Question

I have an account for an ISDN connection at 128kbps. Why can't I have a satisfactory transfer data rate?

Answer

Reason:
B-channel is not working. Your Internet Service Provider (ISP) fails to provide greater rates of data transfer or ISP lines are busy at the moment that the call is made.

What to do:
Be sure that you have given the ATB0 command on netMod Try not to be connected with the ISP during the busy hours Be sure that the information that you want to download demands the use of the second B-channel.

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Frequently interruption

Question

My connection is frequently interrupted. What can I do to avoid this problem?

Answer

Reason:
There may be different reasons, so make the following checks:

What to do:
Check the cable of your serial connection ISP make interrupts due to lack of performance You have exceeded the daily access time limit.

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Excessive charging

Question

My Charging is excessive when I am connected to the Internet Service Provider (ISP). What is the problem?

Answer

Reason:
Incompatibility of the negotiation process between netMod and Internet Service Provider (ISP) equipment in anything that concerns the use of second B Channel.

What to do:
If you are not a MLPPP (128kbps) subscriber be sure that you have not the MLPPP function activated in netMod.

Always give the command:
ATB40

Activate the supplementary service (AOC-D) and after the connection with the ISP check the charging by using the following AT Commands:
ATS89=4
and
ATCH?

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