公开(公告)号：US6385446B2

公开(公告)日：2002-05-07

申请号：US79442401

申请日：2001-02-27

Applicant: NOKIA NETWORKS OY

Inventor： PALVIAINEN KEIJO ,  KESKINEN MATTI ,  OJALA ERKKI ,  YLA-OUTINEN PETTERI

IPC: H04M3/533 ,  H04M3/54 ,  H04M7/00 ,  H04W4/12 ,  H04Q7/38

CPC classification number: H04W4/12 ,  H04M3/533 ,  H04M3/54 ,  H04M3/545 ,  H04M7/00 ,  H04M2201/12 ,  H04M2207/18

Abstract: In telecommunications networks the problem with call forwarding restriction according to prior art is that access through call forwarding to numbers with ensuring an answer rather than possible further forwarding is not possible. The invention is based on the idea that call forwarding is allowed despite call forwarding restriction when the number to be used in forwarding the call meets special conditions set beforehand. The number is thus compared with the preset conditions and depending on the result of this comparison the call is either forwarded or not.

Abstract translation: 在电信网络中，根据现有技术的呼叫转移限制的问题是不可能通过呼叫前转到数字来确保答案而不是可能进一步转发。 本发明是基于这样的想法，即当转接呼叫中使用的号码符合预先设定的特殊条件时，呼叫转移限制是允许的。 因此，该号码与预设条件进行比较，并且根据该比较的结果，呼叫转发或不转发。