KR20040031971A - Display method for busy information of video phone - Google Patents

Abstract

PURPOSE: A method for displaying busy information of a video phone is provided to display a busy state to a caller when a busy signal is received while making a call, and to display information on the caller to other party, thereby implementing user convenience. CONSTITUTION: A caller transmits setup information to a callee as receiving call signals, and a call is made. The caller transmits an ARQ(Automatic Repeat Request) to a gatekeeper to receive a confirmation, transmits the setup information to the callee, and receives a release complete message. If the caller receives the release complete message while attempting a call, a busy tone is generated. If the callee is in a state of making a call with the third party, an IP address or an alias of the caller is displayed on a screen of a mobile communication terminal of the callee.

Description

DISPLAY METHOD FOR BUSY INFORMATION OF VIDEO PHONE}

The present invention relates to a technology for providing an additional service during a call of H.323, which is a standard of the multimedia communication system of ITU-T. In particular, an indication that the caller is busy when receiving a busy signal when making a call from a videophone The present invention relates to a method of displaying information during a call of a video telephone, which allows the other side to display information of the caller.

H.323, a standard of ITU-T's Multimedia Telecommunication System, proposes a standard for a system capable of video communication. Modules related to calls except for the video / audio codec of H.323 are largely responsible for Q.931 for Call Signaling, H.245 for Call Control, and Address Resolution. Can be divided into RAS.

However, since there is no function to display information during a call in any of Q.931, H.245, and RAS related to a call except for the video / audio codec of the conventional H.323, it is inconvenient for the calling user and the called user to use it. There was a problem going through.

Accordingly, an object of the present invention is to give an indication that the caller is busy when receiving a busy signal when making a call, as in a general telephone when applying H.323 to a video phone, and to the other side of the caller. The present invention provides a method of displaying information during a call of a video telephone that displays information.

1 is an explanatory diagram showing a normal call processing process in the present invention.

2 is an explanatory diagram showing a process of displaying information during a call in the present invention.

In the method of displaying information during a call of a video telephone according to the present invention, an ARQ is transmitted from the calling user to the gatekeeper, received by the ACF, and the setup information is transmitted to the called user. Then, call handling, alerting, and connecting signal are performed. The first step of receiving a call and registering the same with the gate keeper on the receiving user side and then making a call when the H.245 channel is opened; Transmitting a release complete message to the calling user by sending an ARQ to the gatekeeper at the calling user, receiving a conform to the ACF, transmitting setup information to the called user, and then holding the receiver; When the release user receives the release complete message during a call attempt, the calling user sounds a busy tone, and when the called user is in a call with a third party, the calling user's IP address or alias is displayed on the screen of the called user. A third process, which will be described in detail with reference to FIGS. 1 and 2 to which the method for displaying information during a call of the present invention is as follows.

If you receive a signal to notify you that you are on a call when you make a call from a regular phone: ① Just before the caller picks up the handset and enters the phone number; ② When the caller picks up the handset and makes a call. This is one of the cases where the called user is talking to a third party, and the called user's phone is ringing.

In the present invention, in response to the above four cases, a display is provided to notify the calling user that the caller is busy. In the third case, the calling user information is displayed on the called user.

First, when H.323 call processing is normally performed, the call processing process will be described based on Q.931, H.245, and RAS. In FIG. 1 and FIG. 2, the solid line represents Q.931, the thick solid line represents H.245, and the dotted line represents RAS. In this case, a gate keeper is present. If there is no gatekeeper, only the RAS indicated by the dotted line may be omitted.

First, the calling user sends an automatic repeat request protocol (ARQ) to the gatekeeper to request connection approval, receives a conform to the ACF, and then transmits setup information to the called user. Call proceeding, alerting, and connect signals are received.

The called user side registers with the gatekeeper as in the calling user side and opens the H.245 channel to make a call with the calling user side. Thereafter, when the call is terminated, the H.245 channel is blocked, a release complete message (Release Complete) is transmitted, and the gatekeeper is disengaged.

On the other hand, call processing is not normally performed as described above when in a call. That is, the process of transmitting an ARQ to the gatekeeper, receiving an ACF, and transmitting setup information to the destination user is identical to the normal call processing.

However, in this case, the called user is holding the handset, that is, in the case of ①, ②, and ④, the release complete message (Release Complete) is transmitted to the calling user.

At this time, the calling user side hangs up if he / she receives a release complete message (Release Complete) during a call according to H.323, but if the release complete message (Release Complete) is received during a call attempt, the called user receives a call. It is determined that it can be done and will ring Busy Tone.

In case of the above ③, that is, even when the called user is talking to the third party, sending the release complete message (Release Complete) from the called user to the calling user is the same as in the normal call processing, but additionally the called The calling party's IP address, alias, and the like are displayed on the user's screen. This is possible because it holds the Setup information.

As described in detail above, when the H.323 is applied to a video phone, the present invention indicates that the caller is busy when receiving a busy signal when making a phone call, such as a normal phone, and the person making the call to the other party. By displaying the information, it is possible to provide convenience in use.

Claims (2)

In the video processing method of the applied video telephone, when the called user is holding the handset after the ARQ is transmitted to the gatekeeper by the calling user and converted to ACF, and the setting information is transmitted to the called user, A first step of transmitting a message; When the release user receives the release complete message during a call attempt, the calling user sounds a busy tone, and when the called user is in a call with a third party, the calling user's IP address or alias is displayed on the screen of the called user. A method of displaying information during a call of a video telephone, characterized in that it comprises a second process. 2. A receiver according to claim 1, wherein the called user is holding the handset immediately before the calling user picks up the handset or enters a telephone number, or when the called user picks up the handset and makes a call or the called user is talking to a third party. A method for displaying information during a call of a video telephone, characterized in that either the case is ringing at a time or a call of the called user.