Method of accessing service resource items that are for use in a telecommunications system

A method of accessing service resource items for use in setting up bearer channels through a switched telecommunications system including the step of provisioning one or more servers connected to a computer network with a plurality of service resource items that are located with corresponding known URIs. The computer network is logically distinct from a telecommunications system and the service resource items relate to setup control for bearer channels through the telecommunications system. Each of the service resource items is associated with a respective predetermined code. The predetermined codes are distinct from the URIs and identify end-point entities for the bearer channels. The method also includes providing a mapping between the predetermined codes and the known URI of the service resource item associated with its predetermined code. The method further includies utilizing the predetermined codes to access service resource items by using the mapping to determine the URI corresponding to that resource item and then using the URI to access the service resource item.