(54) METHOD FOR TESTING AN OBJECT IN A TELECOMMUNICATIONS SYSTEM
(75) Inventors: Tom Swahn, Esbo (FI); Mika Kamarainen, Helsinki (FI)
(73) Assignee: Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.
(21) Appl. No.: 09/674,919
(22) PCT Filed: Apr. 20, 1999
(86) PCT No.: PCT/FI99/00319
§ 371 (c)(1),
(2), (4) Date: Jan. 12, 2001
(87) PCT Pub. No.: W099/59317 PCT Pub. Date: Nov. 18, 1999
(30) Foreign Application Priority Data
May 8, 1998 (FI) 981029
(51) Int. CI.7 H04M 1/24; H04M 3/22
(52) U.S. CI 379/29.01; 379/1.01; 379/9;
379/26.01; 379/29.01
(58) Field of Search 379/1.01, 9.01,
379/9, 9.06, 12, 15.01, 22, 22.01, 26.01, 27.01, 29.01, 29.1, 29.11, 30, 22.04, 22.05,
24
(56) References Cited
U.S. PATENT DOCUMENTS
4,392,026 A * 7/1983 Kojima et al 379/30
4,447,679 A * 5/1984 Kojima et al 379/29.01
4,582,964 A * 4/1986 Pickens 379/8
4,670,897 A * 6/1987 Parsons et al 379/10.01
4,860,281 A * 8/1989 Finley et al 379/22.01
5,835,566 A * 11/1998 Cowgill 379/10.01
6,038,288 A * 3/2000 Thomas et al 379/15.01
OTHER PUBLICATIONS
International Telecommunication Union, "Functional
Description of the Message Transfer Part (MTP) of Signal-
ling System No. 7", Mar. 1993, pp. 1-20.
International Telecommunication Union, "Signalling Data
Link", 1993, pp. 1-6.
International Telecommunication Union, "Signalling Net-
work Functions and Messages", Jul. 1996, pp. 1-207.
International Telecommunication Union, "Signalling Link",
Jul. 1996, pp. 1-87.
International Telecommunication Union, "Signalling System No. 7—Signalling Network Structure", Mar. 1993, pp. 1-23.
International Telecommunication Union, Signalling System No. 7—Message Transfer Part Signalling Performance, Mar. 1993, pp. 1-36.
International Telecommunication Union, "Testing and Maintenance", 1993, pp. 1-6.
* cited by examiner
Primary Examiner—Due Nguyen
Assistant Examiner—Quoc Tran
(57) ABSTRACT
In a telecommunications system, an object having an incoming side and an outgoing side is tested using a plurality of test components allocated in parallel for the incoming and outgoing sides of the object. The in-parallel allocated test components perform testing routines for the incoming and outgoing sides of the object. A main test component is connected to each of the in-parallel allocated test components, and equivalently controls operations of the in-parallel allocated test components. The resulting test structure for testing the incoming and outgoing sides of the object, is symmetric.
8 Claims, 6 Drawing Sheets
