Method for detecting calls and corresponding units

Details Method for detecting calls and corresponding units Method for detecting calls and corresponding units

2003-04-30

2010-06-22

Addy, Thjuan K (Department: 2614)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C379S088130, C379S093010, C379S142010, C379S142040

Reexamination Certificate

active

07742460

ABSTRACT:
Disclosed is a method in which a detection request, by means of which an identifier of a calling terminal is to be detected, is addressed to a signaling unit by a called terminal. The called terminal is connected to a data packet transmission network. The signaling unit signals according to a signaling protocol that has been defined for the transmission of data in a data packet transmission network. The detection request is transmitted along with a message and/or an information element which has been established for signaling in the data packet transmission network.

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Fredrik Thernelius, “SIP, NAT, and Firewalls”, Master's Thesis, May 2000, pp. 1-69.

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