Patent ID: 9473937
Filing Date: 2016-10-18
CPC Classification: H04M,H04W

Claim Text:
1. A method for processing information based on dual-tone multifrequency, comprising: a sending terminal establishing a voice call with a receiving terminal; the sending terminal receiving input key information, encoding the key information into dual-tone multifrequency information, and transmitting the dual-tone multifrequency information and voice call audio information to the receiving terminal together; and the receiving terminal decoding and restoring the dual-tone multifrequency information to the key information; determining a type of the key information according to a preset key information judgment policy, and performing corresponding operations according to the key information; wherein, the key information judgment policy comprises: when the key information is an 11-digit numeric number, and first three digits of the numeric number have a mobile phone number characteristic, judging that the numeric number is a mobile phone number; when the key information is an 11-digit numeric number, and first three digits or first four digits of the numeric number have a fixed-line telephone number characteristic, judging that the numeric number is a fixed-line telephone number; when the key information is an 18-digit numeric number, and first six digits of the numeric number have an identity card address code characteristic, judging that the numeric number is an identity card number.