Method for replacing a telephone exchange by another...

Details Method for replacing a telephone exchange by another... Method for replacing a telephone exchange by another...

2004-05-03

2008-11-18

Ni, Suhan (Department: 2614)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C379S230000

Reexamination Certificate

active

07453867

ABSTRACT:
A method for replacing an existing international telephone exchange (ITNC) with a new ITNC. Specifically, the new ITNC is first configured off-line to have the same point-code and administrative name as the existing ITNC has. Then, a network operator, through conventional signaling procedures, reduces the amount of traffic routed to that existing ITNC to zero and directs that traffic to other ITNCs in the same domain as the ITNC being replaced. Thereafter, the new ITNC is installed in the domain. Once installation is complete, the new ITNC is brought into operation with traffic then being routed to it. Because the new ITNC has the same corresponding point-code as did the existing ITNC, advantageously no change to network routing tables of other network operators is required to accommodate the replacement.

REFERENCES:
patent: 5825780 (1998-10-01), Christie
patent: 5848144 (1998-12-01), Ahrens
patent: 0 435 448 (1991-07-01), None

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