H - Electricity – 04 – M
Patent
H - Electricity
04
M
344/15
H04M 3/54 (2006.01) H04Q 3/545 (2006.01)
Patent
CA 1310730
ELECTRONIC SWITCHING SYSTEM HAVING CALL-FORWARDING FUNCTION ABSTRACT OF THE DISCLOSURE Disclosed is an electronic switching system having a call-forwarding function for effecting call forwarding between subscribers, wherein discrimination information is added to call forwarding data for respective subscriber terminals, the discrimination information indicating whether or not each of the subscriber terminals is already registered as an alternative destination from other subscriber terminals. When a call forward to one of the subscriber terminals is to be registered, the corresponding discrimination information is read. When the read discrimination information indicates that the subscriber terminal is not yet registered as an alternative destination, the subscriber terminal is allowed to be registered as an alternative destination, and when the read discriminating information indicates that the subscriber terminal is already registered as an alternative destination, the subscriber terminal is inhibited from being registered as an alternative destination. Whereby, an endless loop can be avoided at the stage of the call forward registration before execution of the call forward.
605323
Nakagiri Etsuji
Suzuki Takashi
Fujitsu Limited
Mcfadden Fincham
LandOfFree
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