# US 2014/0153446 A1 · Method for collect call service based on voip technology and system thereof

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- Number: US 2014/0153446 A1
- Document ID: US20140153446A1
- Status: Published application
- Kind: A1
- Application number: 13/907,950
- Filed: 2013-06-02
- Published: 2014-06-05
- Earliest claimed: 2003-05-12
- Inventors: Ey-Taeg Kwon
- Web page: https://patentgrep.com/patent/US20140153446A1

## CPC

- H04M 15/08: Metering calls to called party {, i.e. B-party charged for the communication}
- H04M 3/42042: {Notifying the called party of information on the calling party (details within substation equipment H04M1/57, signalling details H04Q3/72)}
- H04M 7/1245: {where a network other than PSTN/ISDN interconnects two PSTN/ISDN networks}
- H04M 7/125: {Details of gateway equipment}
- H04M 7/1295: {Details of dual tone multiple frequency signalling}
- H04M 15/00: Arrangements for metering, time-control or time indication {; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP}
- H04M 15/56: {for VoIP communications}
- H04M 15/8044: {Least cost routing}
- H04M 15/8083: {involving reduced rates or discounts, e.g. time-of-day reductions or volume discounts}
- H04M 15/8257: {Unit based}
- H04M 15/842: {Announcement, e.g. IVR dialogue}
- H04M 15/858: {Request users acknowledgement prior to use}
- H04M 7/1205: {where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks}
- H04M 2215/62: Called party billing, e.g. reverse billing, freephone, collect call, 0800 or 0900
- H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)

## Abstract

One embodiment of the present invention provides a collect call method and system thereof, more particularly, in order to charge the called party with a uniform toll for collect call, which is determined by only the type and location of called party terminal. In one embodiment, the collect call method, system and a counsel service providing method use a free VoIP network for part of the voice call link and a charge PSTN network for the rest of the voice call link. In one embodiment, if the first link corresponding to the collect call request is established, the collect call switch calls the called party terminal to establish the second link, and billing on the second link is initiated.

## Claims

### Claim 1

A collect call system based on voice over Internet protocol (VoIP), comprising:
a called gateway configured to receive a collect call request from a caller terminal via a VoIP network compatible with one of H.323 Protocol, Session Initiation Protocol (SIP), or Media Gateway Control Protocol (MGCP); and
a collect call switch configured to:
a) establish a first communication link between the collect call switch the called gateway upon receiving a collect call request from the caller terminal;
b) subsequent to establishing the first communication link, establish a second communication link between the collect call switch and a called terminal;
c) transmit a caller identification to the called terminal when the second communication link is established; and
d) connect the first communication link and the second communication link based on a collect call acceptance from the called terminal to establish a voice call link between the caller terminal and called terminal;
wherein the collect call switch is further configured to determine a collect call toll only for the second communication link and to initiate a billing process responsive to the collect call acceptance.