Help > Functions and applications > Call forwarding > Call Forwarding for external numbers
Call Forwarding for external numbers
When call forwarding for external numbers is used, calls directed to an external number (dialled by an external caller) are rerouted to other external connections. In this way, these calls can be taken on another telephone, for example, on a smartphone if no one can take the call internally.
*Note: If you want to also forward internal calls, use call forwarding for users or for groups instead of call forwarding for external numbers. This also allows calls to be forwarded to internal telephones.
*Note: The function can be configured with a VoIP exchange line via keypad codes (depending on the provider) via the keypad of the phone.
Configuration 
•Enabling the following authorisation separately for the involved internal phones: Features to be configured by the network provider (CF, key pad)
−User > Phone numbers > > Configure > Authorisations
•Enabling the authorisation for the involved internal phones configuration-dependent/time-controlled:
−User > Profiles > > Authorisations
•Configuring and enabling call forwarding (if necessary, configuration-dependent/time-controlled)
−Exchange lines > Exchange line routing > Call distribution for
•Making additional settings for call forwarding separately for providers.
−Exchange lines > Providers and Accounts > > Settings
•Making additional settings for call forwarding separately for accounts.
−Exchange lines > Providers and Accounts > > Settings > Miscellaneous > Expert configuration
Alternative functions on an internal phone
•Configuring, enabling and disabling unconditional call forwardig
•Configuring, enabling and disabling call forwardig if busy
•Configuring, enabling and disabling call forwardig on no reply
*Description of operation under Call Forwarding for external numbers