Dial-back system of IP phone, and handset for using the system

Abstract

The IP phone includes baseband processor, and data memory. The baseband processor includes IP number generation device, transmission device, control device connected to all parts in the baseband processor, and device for storing IP switch in number and device for picking up IP switch in number, which are connected between data memory and controller. The baseband processor also includes automatic hung up device, temporary memory connected to IP number generation device, and device for picking up number of coming call connected between control device and data memory. Keyboard of handset of the IP phone dial-back system includes IP key corresponding to the dial-back system. Through device for picking up number, and automatic hung up device, the invention realizes automatic disconnecting incoming phone. Original number is picked up from inputting signal of radio circuit so as to shorten time of dial-back, and raise success ratio of dial-back.

Description

【Technical field】 [0001] The design of the invention relates to the field of telephone communication, in particular to an IP telephone callback system applied to a mobile phone and a mobile phone using the system. 【Background technique】 [0002] As a communication system using the Internet network as the transmission medium, IP telephony has a huge advantage in terms of long-distance telephone charges compared with traditional telephones. Usually, when a mobile phone user dials a domestic or international fixed-line long-distance call, he needs to dial an IP telephone access number (for example, the mobile access code is 17951, and the Unicom access code is 17910) before the dialed long-distance number, and each time he dials All need such when making long-distance calls, thereby brought a lot of inconveniences to the user in use. [0003] Chinese patent CN1173546C discloses an IP access code automatic dialing system and a mobile phone using the system, which can realize th...

AI Technical Summary

Problems solved by technology

[0004] In practical application, in order to save costs and expenses, when a long-distance call is received and needs to be hung up and dialed back with an IP phone, if the above technical solution is adopted, the operation will be more cumbersome. First, press the hang up button to hang up Cut off the incoming call, and then find or re-enter the phone number from the phone records and call back. If there is no agreement in advance, I don’t know if you will call back. The other party may continue to try to call back, which will cause the call back due to busy Unsuccessful, thereby making mistakes or causing misunderstandings

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