Voice service implementation method, voice fall back implementation terminal and system thereof
A voice service and terminal technology, applied in the field of communication, can solve problems such as the difficulty of voice service fallback, and achieve the effect of reducing complexity and delay
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[0078] This embodiment is described by taking the implementation on a dual-mode CDMA / LTE terminal as an example. As shown in 7, the dual-mode CDMA / LTE terminal includes the following modules: a pre-registration module 72, a notification module 74, and a radio link control module 76 and voice data transmission module 78, the structure will be described below.
[0079] First, the pre-registration module 72, user equipment (User Equipment, referred to as UE) (that is, the above-mentioned dual-mode CDMA / LTE terminal) pre-registers to the core network equipment through the pre-registration module 72, so that the core network equipment knows that the UE has the CSFB function , and then when the UE wants to perform a voice service, the core network equipment will instruct the LTE wireless network and the CDMA wireless network to drop the voice service back to the CDMA network. The pre-registration process may be forwarded to the core network through the LTE wireless network, or direc...
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