FRITZ!Box 7581 Service - Knowledge Base

FRITZ!Box 7581 Service

Configuring provider prefixes and dialing rules

A dialing rule defines which telephone number or provider prefix (call-by-call number) the FRITZ!Box uses for outgoing calls to a particular number range (for example to mobile telephone numbers) or to a particular telephone number. This way you can always use the most inexpensive telephone rate to make calls.

For example, you can define that calls to a particular number range (for example 001) are always made using an inexpensive provider prefix or calls to a particular telephone number are always made using a particular internet telephone number.

Requirements / Restrictions

  • Provider prefixes (call-by-call numbers) can only be used for landline numbers.

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

1 Configuring provider prefixes

If your provider supports it, you can configure provider prefixes in the FRITZ!Box. When you make a call, the provider prefix is then dialed before the actual telephone number. This means that the call is made using the provider of the prefix and is billed according to the current rate of the provider prefix:

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "Call Handling" in the "Telephony" menu.
  3. Click on the "Provider Prefixes" ("Carrier Prefixes") tab.
  4. If you want to use a provider prefix for all calls, enter the desired provider prefix in the "Global Provider Prefix" field. The global provider prefix then applies to all outgoing calls for which no other provider prefix is defined in a dialing rule.
  5. If you want to use a provider prefix for particular calls, enter the desired provider prefixes under "Additional Provider Prefixes". You can then use these provider prefixes when configuring dialing rules for an individual number or calls to a particular number range, for example mobile networks, international calls.
  6. Click "Apply" to save the settings.

2 Configuring 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. Click the "New Dialing Rule" button.
  5. In the drop-down list "Number range", select the type of telephone calls the dialing rule should apply to. If you selected "Telephone number" for the range, also enter a telephone number or number range:

    Example:
    Enter 030 if the dialing rule is to apply for all calls to Berlin.

  6. In the drop-down list "Connect via", select the telephone number or provider prefix that should be used to make these calls. If you select "Internet", the FRITZ!Box uses the first internet telephone number set up under "Telephony > Telephone Numbers".
  7. Click "OK" to save the settings.