Method of processing a 2G call, device and computer program

A method of establishing, maintaining or releasing a call in a 3G mobile communications network (20), wherein at least one 2G terminal (21) participates in said call. The method comprises the steps of: at a network entity (23, 33), checking (502) whether an incoming signal from a mobile terminal (21, 22) is a 2G signal or not and, if said signal is a 2G signal: extracting (504) the user information from said signal and checking (505) whether its content is user payload or signalling information, and: if it is signalling information, checking (508) whether it is a channel request or a disconnection request, and: if it is a channel request, establishing (509) a 3G packet data protocol context and requesting (510) a radio access bearer for establishing a connection to a higher level network entity (25) and if it is a disconnection request, releasing (511) an open 3G packet data protocol context and requesting (512) the disconnection of a connection to a higher level network entity (25). If it is user payload instead of signalling information, encapsulating (506) said user payload in a frame of a call established on a radio access bearer and sending said frame to a higher level network entity (25). Network entity and computer program.