Abstract: Methods and apparatus, including computer program products, are provided for emergency call handling. In one aspect there is provided a method. The method may include receiving, at a user equipment, an indication from a network, the indication representative of at least one of whether a carrier grade voice over cellular packet data call is available at a cell serving the user equipment or whether an over-the-top service is available at the cell serving the user equipment; and initiating, by the user equipment based on the received indication from the network, a call via the over-the-top service, when the indication represents the carrier grade voice over cellular packet data call is not available at the cell serving the user equipment and the over-the-top service is available at the cell serving the user equipment. Related apparatus, systems, methods, and articles are also described.

Abstract: Methods and apparatus, including computer program products, are provided for emergency call handling. In one aspect there is provided a method. The method may include receiving, at a user equipment, an indication from a network, the indication representative of at least one of whether a carrier grade voice over cellular packet data call is available at a cell serving the user equipment or whether an over-the-top service is available at the cell serving the user equipment; and initiating, by the user equipment based on the received indication from the network, a call via the over-the-top service, when the indication represents the carrier grade voice over cellular packet data call is not available at the cell serving the user equipment and the over-the-top service is available at the cell serving the user equipment. Related apparatus, systems, methods, and articles are also described.

Abstract: A computer may be provided with a wireless communication capability by connecting a communication device to the computer through a cable connection. The communication device may provide the computer with a communication connection to a mobile telecommunication network. When a cable connecting the communication device to the computer is removed, the communication device detects a disconnection between the communication device and the computer. Consequently, the communication device starts a timer upon detection of the disconnection and performs an operation to deregister the communication device from the mobile telecommunication network after the lapse of a pre-determined time period counted by the timer. Accordingly, the communication device does not immediately deregister itself from the mobile telecommunication network when it detects the disconnection. Instead, the communication device allows a user to reattach the cable within the pre-determined time period.