System and method for providing unified messaging system service using voice over Internet protocol

• US 20050157708A1
• Filed: 11/26/2004
• Published: 07/21/2005
• Est. Priority Date: 01/19/2004
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Chun, Joon-Sung
• Granted Patent: US 7,885,187 B2
• Time in Patent Office: Days
• US Class Current: 370/356
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04M 2203/4509 Unified messaging with single point of access to voicemail and other mail or messaging systems unified messaging in packet switching networks H04L51/56
• CPC Class Codes: H04M 3/53333 Message receiving aspects

Abstract

A system and a method providing UMS services using VoIP (Voice over Internet Protocol), upon transmitting voice data to a VoIP gateway, a VoIP-UMS having a VoIP interface transmits the voice data in a burst mode using the UMS'"'"'s characteristic of sending the voice data that has been already recorded, and the VoIP gateway receives voice data that will listen to a user, stores the voice data in a buffer in advance, and reproduces the voice data at constant intervals so that the user listens to the voice, thereby eliminating noises due to delay and jitter.

Claims

1. A system, comprising:

a VoIP-UMS adapted to transmit recorded VoIP (Voice over Internet Protocol) voice packet data over a first network in a burst mode to provide voice service; and

a VoIP gateway adapted to;

receive the VoIP voice packet data from the VoIP-UMS over the first network,

store the VoIP voice packet data in a buffer,

perform data conversion with respect to the stored VoIP voice packet data, and

transmit the converted data to a subscriber over a second network.

2. The system of claim 1, the VoIP gateway comprises:

a first network interface module adapted to match with the first network;

a second network interface module adapted to match with the second network;

a main processor adapted to perform call processing of the first network interface module and the second network interface module;

said buffer adapted to receive and store the VoIP voice packets that are transmitted from the VoIP-UMS in the burst mode, through the first network module; and

a digital signal processor (DSP) adapted to;

perform digital signal processing with respect to the voice VoIP packet using a voice codec, and

output the processed data to the subscriber through the second network interface module, the voice VoIP packet being supplied from the buffer.

3. The system of claim 2, the main processor being configured to:

monitor the amount of the VoIP voice packets stored in the buffer at constant intervals, and when the amount of the voice packets stored in the buffer is below a reference value, maintain the amount of the VoIP voice packets stored in the buffer to more than a certain amount by requesting more VoIP voice packets from the VoIP-UMS.

4. The system of claim 3, the buffer being adapted to send a trigger signal to the main processor to enable the main processor to request more VoIP voice packets from the VoIP-UMS when the amount of the VoIP packet data stored in the buffer decreases below said certain amount.

5. The system of claim 1, upon performing a call setup with an arbitrary VoIP gateway, the VoIP-UMS is adapted to determine whether to use a real time transmission mode in which the VoIP voice packets are transmitted at constant intervals or to use a burst transmission mode in which the voice packets are transmitted in the burst mode in order to send the VoIP voice packets stored in the VoIP-UMS to the relevant VoIP gateway.

6. The system of claim 1, wherein upon transmitting the VoIP voice packet data to the VoIP gateway in the burst mode, the VoIP-UMS is adapted to transmit the VoIP voice packet data based on a buffer size in the VoIP gateway for a first transmission and by the amount corresponding to half the size of the buffer for subsequent transmissions.

7. The system of claim 1, the VoIP-UMS comprises:

a database adapted to store VoIP voice data and user information for UMS service;

a first network interface module adapted to match with the first network to connect the VoIP-UMS to the VoIP gateway; and

a main processor programmed and configured to;

perform call connection and disconnection to the VoIP gateway, and

send the VoIP voice packets stored in the database to the VoIP gateway in the burst mode in response to a request from the VoIP gateway.

8. The system of claim 7, the VoIP-UMS further comprises:

a user registration/management module adapted to receive user registration information and various service request information from UMS service users to manage the information;

a medium server module comprising at least one server adapted to UMS service, the servers being configured in a form of sub modules; and

a medium conversion module adapted to perform mutual conversion of data inputted by respective servers of the medium server module.

9. The system of claim 8, the medium server module comprises a server module adapted to provide a service selected from the group consisting of E-mail, facsimile, mobile communication, and wired communication network services.

10. The system according to claim 1, the first network being an Internet network and the second network being a telephone network.

11. A method of providing UMS service using VoIP, comprising:

transmitting, by VoIP-UMS, recorded VoIP voice packet data over a first network in a burst mode to provide voice service; and

performing, by a VoIP gateway, data conversion processing with respect to the VoIP voice packet data at a fixed speed and to transmit the converted data over a second network to a subscriber after receiving the VoIP voice packet data transmitted from the VoIP-UMS and storing the data in a buffer.

12. The method of claim 11, further comprising, upon performing a call setup with an arbitrary VoIP gateway, determining, by the VoIP-UMS, whether to use a real time transmission mode in which the VoIP voice packets are transmitted at constant intervals or to use a burst transmission mode in which the VoIP voice packets are transmitted in the burst mode in order to send the VoIP voice packets stored in the VoIP-UMS to a relevant VoIP gateway.

13. The method of claim 11, when providing the voice service by the VoIP-UMS, an interval and a size at which the VoIP voice packet data is transmitted to the VoIP gateway in the burst mode is determined in such a range that the VoIP voice packet data stored in the buffer of the VoIP gateway is not depleted below a reference value.

14. The method of claim 13, upon transmitting the VoIP voice packet data to the VoIP gateway in the burst mode, the amount of VoIP voice packet data transmitted in each burst is based on the buffer size in the VoIP gateway for a first transmission, and a time period during which the VoIP voice packets are processed in the VoIP gateway is estimated and, after the estimated time period has elapsed, the VoIP voice packets of a fixed size are transmitted in the burst mode in subsequent transmissions.

15. The method of claim 14, the fixed size being a size of half the size of the buffer.

16. The method according to claim 11, said transmitting, by the VoIP gateway, the data over the second network to the subscriber comprises:

reassembling the VoIP voice packets received from the VoIP-UMS and storing the reassembled VoIP voice packets in the buffer;

fetching the VoIP voice packets stored in the buffer at constant intervals;

performing digital signal processing on the voice packets using a voice codec; and

outputting the resultant voice to the subscriber over the second network.

17. The method of claim 11, further comprising monitoring, by the VoIP gateway, the amount of the VoIP voice packets stored in the buffer and, when the amount of the VoIP voice packets stored in the buffer decreases below a reference value, requesting more VoIP voice packets from the VoIP-UMS and storing them in the buffer so that the amount of the VoIP voice packets stored in the buffer is maintained at more than a fixed amount.

18. The method of claim 11, wherein the first network is an Internet network and the second network is a telephone network.