Help > Functions and applications > Block- and allowlist
Block- and allowlist
Block- and allowlists are created in the exchange line routing for system-wide usage and are assigned to users, groups or special functions. The PBX distinguishes between two types of lists:
Blocklist incoming 
If you do not want to be reached by certain numbers or if you want to prevent callers from reaching a remote extension, their external numbers and/or anonymous callers can be assigned to a blocklist for incoming calls.
Allowlist incoming 
If you still want to allow specific people to call you despite enabled Do-not-Disturb function, their external numbers can be assigned to an allowlist for incoming calls in the PBX.
*Further help under Do-not-Disturb
Blocklist outgoing 
To prevent that users or groups call certain phone numbers, these numbers can be entered in the blocklist for outgoing calls.
*Further help under Exchange line routing
Allowlist outgoing 
Phone numbers that are on the allowlist for outgoing calls unblocks individual phone numbers/number ranges blocked by the exchange line routing.
*Further help under Exchange line routing
Configuration 
•Creating the block- and allowlists.
−Exchange lines > Block- and allowlist
•Turn on and off the block and allow list (incoming) for exchange lines.
−Exchange lines > Exchange line routing > Exchange line routing incoming > Block- and allowlist
•Turn on and off the block and allow list (outgoing) for exchange lines.
−Exchange lines > Exchange line routing > Exchange line routing outgoing > > Block- and allowlist
•Enabling the block- and allowlist (incoming) separately for users/groups.
−User > Phone numbers > > Configure > Reachability
−Groups > Phone numbers > > Reachability
•Assigning exchange line routing with configured block- and/or allowlist (outgoing) separately for users/groups.
−User > Phone numbers > > Configure > Exchange line settings
−Groups > Phone numbers > > Exchange line settings
•Configuring the block- and allowlist (incoming) for users/groups configuration-dependent.
−User > Profiles > > Reachability
−Groups > Profiles > > Reachability
•Assigning exchange line routing with configured block- and/or allowlist (outgoing) for users/groups configuration-dependent.
−User > Profiles > > Exchange line settings
−Groups > Profiles > > Exchange line settings
•Enabling the block- and allowlist (incoming) separately for fax.
−External Devices > Fax >
Alternative functions on an internal phone:
•Enabling and disabling the blocklist (incoming) for users.
*Description of operation under Blocklist (incoming)
•Enabling and disabling the allowlist (incoming) for users.
*Description of operation under Allowlist (incoming)