FRITZ!Box 7390 – Service - Knowledge Base

FRITZ!Box 7390 – Service

Cannot make outgoing calls from a landline

You cannot use a telephone registered with the FRITZ!Box to make calls from a landline.

Note:The configuration procedure and notes on functions given in this guide refer to the latest FRITZ!OS for your FRITZ!Box.

Simply proceed as described below. After each measure, check whether the problem persists.

1 Enabling the landline settings

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "Telephone Numbers" in the "Telephony" menu.
  3. Click on the "Line Settings" tab.
  4. Enable the option "Landline enabled".
  5. Click "Apply" to save the settings.

2 Entering your location information

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "Telephone Numbers" in the "Telephony" menu.
  3. Click on the "Line Settings" tab.
  4. Select your country from the drop-down list under "Location Information". If your country is not included in the list, select "Other country".
  5. For the "Country code", enter the leading zeros in the first field and the country code in the second field (for example for Germany "00" and "49", see fig.).
  6. For the "Area code", enter the leading zero in the first field and the area code in the second field (for example for Berlin "0" and "30", see fig.).

    Fig.: Entering the country code and area code (e.g. for Germany and Berlin)

  7. Click "Apply" to save the settings and confirm that the procedure may be executed on the FRITZ!Box, if you are asked to do so.

3 Deleting call blocks

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "Call Handling" in the "Telephony" menu.
  3. Delete any call blocks configured for outgoing calls to individual numbers or ranges of numbers that you would like to call.

4 Selecting the correct line type

The line type you must select when configuring your landline number(s) depends on how the FRITZ!Box is connected to the telephone line and not the number of available numbers. For example, if you have an ISDN line with one number, you must select the line type "multiple landline numbers (ISDN line)":

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "Telephone Numbers" in the "Telephony" menu.
  3. Click the "New telephone number" button.
  4. Enable the option "Landline number" and click "Next".
  5. Select the type of landline and click "Next".

    Important:You will only be asked to select the type of landline (analog or ISDN line) when you configure the first landline number. If you want to change the type of landline later, you must first delete all of the landline numbers you configured.

  6. Enter your landline number or ISDN telephone numbers (MSNs) and click "Next".

5 Disabling HD telephony

  1. Enter #962*2* on your telephone and press the call button (lift receiver).
  2. Hang up again after about 3 seconds.

    Note:You can re-enable HD telephony by entering #962*1*.

6 Checking the cabling

Incorrect cabling often goes unnoticed. Therefore, make sure that the FRITZ!Box is correctly connected to your line:

  • Check the cabling to your landline.

7 Setting your analog telephone to touch-tone dialing

  • Set your device to "touch-tone dialing" (DTMF) and not "pulse dialing". If tone dialing is selected, you will hear a tone when you press a number key; with pulse dialing, you hear clicking sounds. Refer to the device's manufacturer for information on how to set it up, for example consult the manual.

8 Connecting and configuring an ISDN telephone

Preparations

  • Configure the telephone so that you can send keypad sequences (sequences of symbols and numbers, such as *121#) and enter special characters such as * and # with it. On many telephones, you can configure this function in the menu "Operation at a PBX > Dialing options > Dial * and #".

Disabling the transmission of text information for ISDN telephones

The FRITZ!Box transmits various text information to ISDN telephones during call setup. This way your telephone display shows you which number is currently being used to make a call, for example. However, some ISDN telephones do not process this text information correctly. Therefore, disable the function in the FRITZ!Box for testing purposes:

  1. Enter #960*0* on your telephone and press the call key (lift the receiver).
  2. Hang up again after about 3 seconds.

    Note:You can re-enable this function by entering #960*2*.

Disabling the energy-saving mode for ISDN telephones

The FRITZ!Box is equipped with a number of energy-saving mechanisms. For example, communication between the internal S0 bus and ISDN device is cleared when there is no active connection. Some ISDN devices have problems with this function. Therefore, disable this function in the FRITZ!Box if ISDN devices are having problems with establishing connections:

  1. Enter #966*1* on your telephone and press the call key (lift the receiver).
  2. Hang up again after about 3 seconds.

    Note:You can re-enable this function by entering #966*0*.

Resetting the ISDN telephone

  • On the telephone, delete all numbers (MSNs), call-by-call prefixes, and dialing rules.

Connecting only an ISDN telephone

  1. Disconnect all devices (such as telephones, PBXs, faxes) and cables from the "FON S0" port.
  2. Connect a telephone to the "FON S0" port. Do not use a PBX or an ISDN hub to connect the telephone to the FRITZ!Box.
  3. If you cannot make calls, proceed with the following section. Do not connect any further ISDN devices yet.
    • If you can make calls, then another device or its cable is defective, or a device is incorrectly configured, for example incorrect telephone numbers, dialing rules.
      1. Reconnect the other ISDN devices to find out which device causes the problem. Do not connect more than one ISDN device without its own power supply.
      2. If the error occurs again after you connect a particular ISDN telephone, then that telephone or its cable is defective.
        • If the error occurs again after you connect a PBX, then the PBX is either defective or incorrectly configured, for example incorrect telephone numbers, incorrect dialing rules, or call-by-call prefixes.

9 Setting up FRITZ!App Fon

Defining telephone numbers for FRITZ!App Fon

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "Telephony Devices" in the "Telephony" menu.
  3. Click the button (Edit) for FRITZ!App Fon. When it was installed, FRITZ!App Fon was automatically configured with the telephone's device name on the "LAN/WLAN" port in the FRITZ!Box.
  4. From the drop-down list "Outgoing calls", select the number that FRITZ!App Fon should use for making calls.
  5. Select the numbers that FRITZ!App Fon should react to when you receive calls.
  6. Click "OK" to save the settings.

Enabling alternative microphone

The following steps are only necessary if the problem occurs when using FRITZ!App Fon on an Android device:

  1. Start FRITZ!App Fon.
  2. Tap "More" and then "Settings".
  3. Tap the menu key on the telephone and then tap "Advanced".
  4. Enable the option "Alternative microphone".

10 Configuring the FRITZ!Box

Reconfiguring your telephone

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "Telephony Devices" in the "Telephony" menu.
  3. Delete the telephone that you cannot make calls with. To do so, click the corresponding (Delete) button.
  4. Use the wizard to reconfigure the telephone: To do so, click the "Configure New Device" button and follow the instructions.

    Important:Do not use the wizard configure FRITZ!App Fon. FRITZ!App Fon is automatically reconfigured when you close FRITZ!App Fon completely and then restart the app.

Deleting dialing rules

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "Call Handling" in the "Telephony" menu.
  3. Click on the "Dialing Rules" tab.
  4. Delete any dialing rules for numbers or number ranges to be called using your landline. Two dialing rules for emergency numbers are configured in the factory settings. You can edit these rules, but you cannot delete or block them.
  5. If a "Global Carrier Prefix" was entered on the "Carrier Prefixes" tab, delete it and click "Apply".
  6. Do not configure any new dialing rules until you are able to make calls over the landline. If the error occurs again, then the dialing rule is not suitable.

11 Checking the landline

  1. Disconnect the FRITZ!Box from the landline.
  2. Connect a telephone to the same line.
  3. If the telephone also does not work when connected to your line, contact your telephony provider and have your line checked.

    ATTENTION!You may be charged for checking. Ask your telephony provider about charges in advance!