1. A method for determining the expiry time for a period during which the re-establishment of a lost radio connection including at least one radio bearer, is allowable, comprising the steps of: determining a first expiry time for a period during which the re-establishment of the lost radio connection in respect of radio bearers used to provide a service or services of a first category is allowable and determining a second expiry time for a period during which the re-establishment of the lost radio connection in respect of radio bearers used to provide a service or services of a second category is allowable.