Message generating arrangement

A message generating arrangement, comprising:

• a determining device configured to determine whether a first communication terminal is both configured to participate, by use of Internet Protocol Multimedia Sub-System (IMS) network elements and not configured to participate by use of circuit-switching network elements, in a communication link in which a second communication terminal is configured to use Combining Circuit Switched calls and Internet Protocol Multimedia Sub-System (CSI);
• and
• a message generating device configured to generate, if it has been determined that the first communication terminal is configured to participate by use of IMS network elements in a communication link in which the second communication terminal is configured to use CSI, a message comprising radio environment information to indicate that the first communication terminal is enabled to configured for participation in a communication link by use of circuit-switching and packet switching network elements simultaneously.

A message generating arrangement, comprising:

• a determining device configured to determine, at a point of time when a first communication terminal has not yet requested to set up a multimedia communication session, whether the first communication terminal is enabled to participate, by use of only packet-switching network elements in a communication link in which a second communication terminal is enabled to participate by use of circuit-switching network elements and a message generating device configured to generate, if it has been determined that the first communication terminal is enabled to participate by use of only the packet-switching network elements in a communication link in which the second communication terminal is enabled to participate by use of the circuit-switching network elements, a message comprising information to indicate that the first communication terminal supports that a packet-switched communication link and a circuit-switched communication link is enabled to exist in parallel between the first communication terminal and the second communication terminal.

A message generating arrangement, comprising:

• a determining device configured to determine whether a first communication terminal is enabled to participate by use of packet-switching network elements although the first communication terminal is enabled to exist currently not use circuit-switching network elements in a communication link in which a second communication terminal is to participate by use of circuit-switching network elements and a message generating device configured to generate, if it has been determined that the first communication terminal is enabled to participate by use of the packet-switching network elements in a communication link in which the second communication terminal is participating by use of the circuit-switching network elements, a message comprising information to indicate that the first communication terminal supports that a packet-switched communication link and a circuit- switched communication link is enabled to exist in parallel between the first communication terminal and the second communication terminal.

A computer-implemented method comprising:

• determining whether a first communication terminal is configured to participate, by use of only packet-switching network elements and not configured to participate by use of circuit-switching network elements, in a communication link in which a second communication terminal is configured to participate by use of circuit-switching network elements and
• generating, if it has been determined that the first communication terminal is configured to participate, by use of only packet-switching network elements in a communication link in which the second communication terminal is configured to participate by use of circuit-switching network elements, a message comprising information to indicate that the first communication terminal supports that a packet-switched communication link and a circuit-switched communication link is enabled to exist in parallel between the first communication terminal and the second communication terminal.

At least one non-transitory computer-readable medium, comprising instructions stored thereon, which executed by at least one processor, causes the at least one processor to:

• determine whether a first communication terminal is configured to participate, by use of only packet-switching network elements and not configured to participate by use of circuit- switching network elements, in a communication link in which a second communication terminal is configured to participate by use of circuit-switching network elements and
• generate, if it has been determined that the first communication terminal is configured to participate, by use of only packet-switching network elements in a communication link in which the second communication terminal is configured to participate by use of circuit-switching network elements, a message comprising information to indicate that the first communication terminal supports that a packet-switched communication link and a circuit-switched communication link is enabled to exist in parallel between the first communication terminal and the second communication terminal.