Session continuity in communication networks

A method in an application server, comprising

• receiving, from a first communication device, an indication that a communication session between the first communication device and a second communication device is to be split into a packet switched part and a circuit switched part,
• waiting for to receive transfer requests of both the packet switched part and the circuit switched part, and
• informing the second communication device of the transfers of the packet switched part and the circuit switched part.

A signal arranged to be transmitted from a first communication device to an application server maintaining a communication session between the first communication device and a second communication device, the signal comprising an indication that said communication session is to be split into a packet switched part and a circuit switched part.

A signal according to claim 22, wherein the signal is one of the following:

• a transfer request of the packet switched part, a transfer request of the circuit switched part, and a separate indication message.

A communication device, comprising

• an input/output unit operable to have an ongoing communication session via a packet switched network,
• a processing unit configured to transfer said communication session from the packet switched network to a second network providing both packet and circuit switched access, wherein
• the processing unit is further configured to inform an application server maintaining said ongoing communication session that the communication session is to be split into a packet switched part and a circuit switched part.

An application server, comprising

• an input operable to receive, from a first communication device, an indication that a communication session between the first communication device and a second communication device is to be split into a packet switched part and a circuit switched part, and
• a processing unit configured to wait for to receive transfer requests of both the packet switched part and the circuit switched part, and to inform the second communication device of the transfers of the packet switched part and the circuit switched part.