IP Multimedia Subsystem (IMS) is access independent as it supports multiple access types including GSM, WCDMA, CDMA2000, WLAN, Wireline broadband and other packet data applications. IMS will make Internet technologies, such as web browsing, e-mail, instant messaging and video conferencing available to everyone from any location. It is also intended to allow operators to introduce new services, such as web browsing, WAP and MMS, at the top level of their packet-switched networks.
ChinaMobile is one of the largest telecom operators in China. It provides IMS lines in some provinces. Listed below are the IMS we tested:
You will need to use the value provided by ChinaMobile to adjust the registrar hostname and outbound proxy IP.
The inbound routes configuration as above ,all the inbound caller will hear the response voice.
And the outbound routes configuration as above.