The invention discloses a service
processing system, a service
processing method and a service
processing device, and aims to solve the problem that the prior art is long in
service time delay. SRI (send routing information) is sent to an HLR (home location register) of a called terminal by an MSC (mobile switching center) of a calling terminal of the service processing
system, when address information of an ECG (enhanced convergent gateway) of the called terminal is found out by the HLR of the called terminal, PRI (provide
roaming identity) information is sent to the EGC which distributes the first MSRN (
mobile station roaming number) for the called terminal, the distributed first MSRN is returned to the MSC of the calling terminal, An IAM (initial address message) carrying the first MSRN is sent to the ECG by the calling terminal, the ECG searches a CSCF (call
session control function) module of the called terminal according to the first MSRN, and the called terminal is called via the searched CSCF module. In the service processing
system, the service processing method and the service processing device in the embodiment, the calling terminal registered in a 2G / 3G (2nd generation / 3rd generation) network can call the called terminal registered in an LTE (long term evolution) network via interaction between the HLR of the called terminal and the ECG of the called terminal and interaction between the MSC of the calling terminal and the ECG, calling routing detouring is reduced, and service
delay is shortened.