A subscriber can park a call and retrieve it with any other phone within the group. All subscribers who are assigned to the same (logical) room can pick up a call parked by any other subscriber belonging to the same group. The parked caller receives a call hold notification and hears an announcement.
The parked caller stays in the park line until someone takes the call or the parked caller hangs up. This feature is useful in situations that require you to go to a
different office to get information before you can answer a call. The parked call can be picked up and answered from any phone in the same (logical) room.
This feature depends on client capability.

Customers can configure groups of phones that will ring simultaneously. The first of them to pick up the call (handset off-hook) is connected. This feature can be used in call centers, where all calls need to be answered no matter by whom. IP centrex subscribers can configure up to 20 phones to ring simultaneously. Residential subscribers can configure up to three (their main phone plus two others). A soon as one of the targets takes the call, the others stop ringing.

Introduced to comply with German regulations (DE-TKG-45g), this feature allows subscribers to reject any calls that have been forwarded. Other features, such as call queue, MAS, parallel ringing, and transferred calls will not be affected. This feature functions like anonymous call rejection. Rejected calls are sent a response with status 403 Forbidden and are identified in a STOP record with disconnect reason „FCR“ in the billing log.

The ad-hoc call recording can be initiated by pressing a button on dedicated hardphones in which case the caller is made aware of the recording by an announcement. This solution is based on the local recording functionality of phones. By pressing the recording button, the active call will
be streamed additionally into your personal voice recording box. All record files can be easily accessed on the web-based self service portal, and from an email notification if activated. Ad hoc recording can be carried out with Snom, Unify Openstage/ Openscape and Aastra phones. Ad hoc call recording is available to both IP centrex and residential subscribers.

This feature enables subscribers to redirect all incoming calls to another phone number, announcement, personal voicemail box, or preconfigured mobile numbers. You can configure a start and end time for this feature. CFU can be used whenever call forwarding depends on a time-related condition.
You can also configure which calls are forwarded, all calls or only calls from external numbers.

Calls that are made to the subscrber’s corporate number, fixed network number or extension number will be forwarded. Calls made to the mobile number will not.

Subscribers can define numbers that are allowed to break through this feature. Calls made from these numbers will not be forwarded although they are not mobile numbers.