Non-server type voice packet communication device and method

• US 20040028029A1
• Filed: 08/12/2002
• Published: 02/12/2004
• Est. Priority Date: 08/12/2002
• Status: Active Grant

• Current Assignee: Vodtel Communications Incorporated
• Original Assignee: Vodtel Communications Incorporated
• Inventors: Wu, Wei-En
• Granted Patent: US 7,154,880 B2
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 61/4535 using an address exchange platform which sets up a session between two nodes, e.g. rendezvous servers, session initiation protocols [SIP] registrars or H.323 gatekeepers
• CPC Class Codes: H04M 7/128 Details of addressing, directories or routing tables
• CPC Class Codes: H04M 7/1295 Details of dual tone multiple frequency signalling

Abstract

A non-server type voice packet communication method, including an IP address inquiring step, an IP address analyzing step, an IP address receiving step, and a voice packet transmitting step. According to the method, the IP address inquiring step firstly transmits an IP address inquiring signal to a non-server type voice packet communication device through a PSTN. Then, the IP address analyzing step determines whether an IP address data is transmitted from the non-server type voice packet communication device using digital modulation signals or not. When the non-server type voice packet communication device using digital modulation signals, the IP address receiving step receives the IP address data. Finally, the voice packet transmitting step transmits voice packets to the non-server type voice packet communication device according to the IP address data through digital network. This invention also discloses a non-server type voice packet communication device for carrying out the mentioned method.

Claims

1. A non-server type voice packet communication method, which comprises:

an IP address inquiring step, which transmits an IP address inquiring signal to a non-server type voice packet communication device;

an IP address analyzing step, which determines whether an IP address data is transmitted from the non-server type voice packet communication device using digital modulation signals or not;

an IP address receiving step, which receives the IP address data transmitted from the non-server type voice packet communication device when the non-server type voice packet communication device transmits the IP address data using digital modulation signals; and

a voice packet transmitting step, which transmits at least one voice packet to the non-server type voice packet communication device according to the IP address data.

2. The method of claim 1, further comprising:

a telephone number receiving step, which receives a telephone number from a first telephone;

wherein the IP address inquiring step transmits the IP address inquiring signal to the non-server type voice packet communication device 20 according to the telephone number.

3. The method of claim 1, further comprising:

an IP address recording step, which records the IP address data in an IP address record table that stores the correspondence relations between the IP address data and a telephone number; and

a correspondence record inquiring step, which checks whether the correspondence relation for the IP address data and the telephone number already exists in the IP address record table and transmits to voice packet according to the IP address data stored in the IP address record table when the relation exists.

4. The method of claim 1, further comprising:

a checking step, which checks whether the voice packet is successfully sent to the non-server type voice packet communication device.

5. The method of claim 4, wherein the IP address inquiring step is performed when the voice packet cannot be successfully sent to the non-server type voice packet communication device.

6. The method of claim 1, wherein the non-server type voice packet communication device couples to an NAT (Network Address Translator), and the non-server type voice packet communication device receives the voice packet transmitted in the voice packet transmitting step.

7. The method of claim 6, further comprising:

transmitting a self-address inquiring packet from the non-server type voice packet communication device to the NAT; and

receiving the IP address data transmitted from the NAT according to the self-address inquiring packet to the non-server type voice packet communication device.

8. The method of claim 7, wherein the self-address inquiring packet is transmitted to an IP address analyzer through the NAT, and the IP address analyzer sends the IP address data in the header of the self-address inquiring packet back to the non-server type voice packet communication device.

9. The method of claim 6, wherein the IP address data include the IP address of the NAT, the port used by the non-server type voice packet communication device on the NAT, and the IP address of the non-server type voice packet communication device.

10. The method of claim 1, wherein the IP address analyzing step determines whether the IP address data is transmitted using FSK (frequency-shift keying) signals, and the IP address receiving step receives the IP address data when the IP address data is transmitted using FSK.

11. A non-server type voice packet communication device, which comprises:

an IP address inquiring module, which transmits an IP address inquiring signal to a second non-server type voice packet communication device;

an IP address analyzing module, which determines whether an IP address data is transmitted from the second non-server type voice packet communication device using digital modulation signals or not;

an IP address receiving module, which receives the IP address data transmitted from the second non-server type voice packet communication device when the second non-server type voice packet communication device transmits the IP address data using digital modulation signals; and

a voice packet transmitting module, which transmits at least one voice packet to the second non-server type voice packet communication device according to the IP address data.

12. The device of claim 11, further comprising:

a telephone number receiving module, which receives a telephone number from a first telephone;

wherein the IP address inquiring module transmits the IP address inquiring signal to the non-server type voice packet communication device according to the telephone number.

13. The device of claim 11, further comprising:

an IP address recording module, which records the received IP address data in an IP address record table that stores the correspondence relations between the IP address data and a telephone number; and

a correspondence record inquiring module, which checks whether the correspondence relation for the IP address data and the telephone number already exists in the IP address record table and transmits to voice packet according to the IP address data stored in the IP address record table when the relation exists.

14. The device of claim 13, further comprising:

a checking module, which checks whether the voice packet is successfully sent to the second non-server type voice packet communication device.

15. The device of claim 11, wherein the second non-server type voice packet communication device couples to an NAT, and the second non-server type voice packet communication device receives the voice packet through the NAT.

16. The device of claim 15, further comprising:

a self-address inquiring module, which transmits a self-address inquiring packet to the NAT.

17. The device of claim 16, wherein the self-address inquiring packet is transmitted to an IP address analyzer through the NAT, and the IP address analyzer sends the IP address data in the header of the self-address inquiring packet back to the non-server type voice packet communication device.

18. The device of claim 16, wherein the IP address data include the IP address, the port used by the second non-server type voice packet communication device on the NAT, and the IP address of the non-server type voice packet communication device.

19. The device of claim 11, wherein the IP address analyzing module determines whether the IP address data is transmitted using FSK signals, and the IP address receiving module receives the IP address data when the IP address data is transmitted using FSK.

20. The device of claim 11, further comprising:

an IP address outputting module, which transmits an IP address data of the non-server type voice packet communication device to the second non-server type voice packet communication device using digital modulation signals.