Telephonic communications – Plural exchange network or interconnection
Patent
1996-12-17
1999-03-16
Tsang, Fan S.
Telephonic communications
Plural exchange network or interconnection
379200, 379203, 379212, 379221, 379223, 379242, 379258, H04M 166, H04M 342, H04M 700, H04M 300
Patent
active
058839496
DESCRIPTION:
BRIEF SUMMARY
The present application is a national state application of PCT/DE95/00808 filed Jun. 22, 1995.
BACKGROUND OF THE INVENTION
The invention relates to a method for a private branch communications exchange to activate a night service configuration.
In relatively large private branch communications exchanges there is the possibility of setting up switchboard positions for a specifiable subscriber group. A switchboard position may comprise one or more attendant telephone stations, forming a group. The switchboard position serves the purpose of receiving and putting through calls--often these are to be only external calls--for the relevant subscriber group. If a switchboard position cannot perform this task, because for example the personnel operating the switchboard position is not present at the switchboard position, a so-called night service is activated for the subscriber group concerned. This activation of the night service may be performed directly at the switchboard position or from a handset authorized for this, by pressing a special button or dialling a code number or by a voice command. The activation of the night service is in many cases also referred to as "pulling the plug".
In the night service, the caller requests directed to a specific subscriber group are routed to a handset of the private branch communications exchange instead of to the switchboard position.
Common Reference DE 39 32 689 Al already discloses a method for the activation of a night service in a private branch communications exchange, in which the handset to which the call requests are diverted when the night service is activated can be determined when activating the night service by entering the call number associated with this handset. The problem underlying the known method is that of ensuring in the case where a private branch communications exchange is used jointly by a plurality of mutually dependent subscriber groups that, when activating the night service for one subscriber group, it is not possible to determine a handset of another subscriber group. To solve this problem, it is proposed according to the known method to store in a central memory information on the association of the handsets with a specific switchboard position and to use this information when activating the night service and determining the handset substituting to a certain extent the switchboard position concerned to perform a check for association of the handset with the subscriber group for which a night service is to be activated.
SUMMARY OF THE INVENTION
The object of the present invention is to specify a method for setting up night service configurations which is independent of the application of a private branch communications exchange and can be used universally with regard to customer wishes and the implementation of which can be performed with as few interventions as possible in existing structures of the private branch communications exchange.
In general terms the present invention is a method for a private branch communications exchange to activate a night service configuration, in which, while a switchboard position assigned to a respective subscriber group for receiving and passing on calls is taken out of operation, incoming calls for the subscriber group are put through to handsets or other switchboard positions. A configuration control is activated by dialling a call number from an internal or external handset or a switchboard position. A number sequence then entered is interpreted by the configuration control as an authorization code and is compared with stored number sequences for checking an authorization to access at least in principle. If the result of the comparison is positive, a subscriber group is selected by means of a subsequently entered number sequence. The entered authorization code is checked by the configuration control with regard to an authorization for the selection of this subscriber group. If authorization is recognized, the handset or the switchboard position which is intended for taking calls directed to the se
REFERENCES:
patent: 3867581 (1975-02-01), Pommerening
patent: 4570035 (1986-02-01), Pinede et al.
patent: 5535256 (1996-07-01), Maloney et al.
Hoosain Allan
Siemens Aktiengesellschaft
Tsang Fan S.
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