Special facilities of the class of service. auto-trunk-req : This setting defines whether automatic access to an outside line is to be configured. man-trunk-group-req: This setting defines whether manuell access via bundle to an outside line is allowed. route-barring: If you have configured the dialing filter (consisting of an inhibit and release filter) in the PBX system you can use these settings to define whether the selected subscriber is subject to the constraints/ privileges imposed/offered by the dialing filter. ars: Use ars (automatic route selection). suppress-A-Addr: Suppress outgoing CLIP information (CLIR). suppress-B-Addr: This value determine if Suppress number of called party (COLR) is enabled or not. specific-pickup : Allow specific pickup. call-waiting : Call waiting signal for analog terminals. ISDN terminal devices use their own special procedures for this. toggle-variant: Allow toggling of variant. silent-phone-intern: Enables a silent phone for incoming internal calls. silent-phone-extern: Enables a silent phone for incoming external calls. call-through: Allow call through. extern-diversion: You can use this setting to define whether external call forwarding for the internal subscriber is to be executed within the PBX system or at the exchange. room-supervision: Allow roomsupervision. intercom: Allows intercom calls to the system telephone or to another identical ISDN telephone. announcement: Enables to receive announcement calls. sms: Authorizes an internal subscriber to receive SMS messages. msg-waiting: Message waiting indication on or off. uus1: Authorizes an internal subscriber to receive USS1 messages. keypad : Authorizes an internal subscriber to carry out KEYPAD functions. doorIntercom-access: Authorizes an internal subscriber to establish a connection with the door entry phone or open the door. tapi: Authorizes a subscriber to use the PBX's TAPI features. store-charge: Charge information for this subscriber will be recorded or not. transmit-charge-info: Charge information will be transmitted to the subscriber or not. use-global-rerouting: Consider global rerouting application.