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1. (WO2017166124) METHOD FOR PROCESSING VOICE SERVICE AND TERMINAL DEVICE

Pub. No.:    WO/2017/166124    International Application No.:    PCT/CN2016/077871
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Thu Mar 31 01:59:59 CEST 2016
IPC: H04W 36/14
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: LI, Zhongjin
李重锦
DUAN, Wenjie
段文杰
CHEN, Zhichao
陈志超
Title: METHOD FOR PROCESSING VOICE SERVICE AND TERMINAL DEVICE
Abstract:
The present invention provides a method for processing a voice service and a terminal device. The method comprises: a terminal device sends a first message to a network device of a first network, the first message being used for requesting a circuit switched fallback (CSFB) voice service; the terminal device receives a second message sent by the network device of the first network, the second message being used for instructing the terminal device to perform network redirection; if the second message does not carry frequency point information, the terminal device determines a re-directional frequency point, wherein the re-directional frequency point is a frequency point supported by a second network; the terminal device sends a connection request to a network device of the second network according to the re-directional frequency point, so as to perform a CS voice service. Hence, when a terminal device needs to perform a voice service, even if frequency point information issued by a network is not received, the terminal device can also determine an appropriate re-directional frequency point, and according to the re-directional frequency point, access a network supporting the voice service, thereby answering or getting through a call, and improving voice communication experience of a user.