Leg-wide connection admission control

According to the present invention, a switching method and a switching apparatus in a telecommunication network for connecting physical endpoints via a through switch connection are disclosed. The through switch connection is composed of legs and a leg connector, and a leg is composed of services and subconnections between the services. A leg being terminated by termination points and comprising specific services is formed by leg control means, and the specific services and subconnections between the specific services which form the leg are provided by connection control means, the services being terminated by termination points. Further, connection admission control means accept connections being part of the through switch connection. According to the present invention, the leg control means ask the connection control means for the termination points of the specific services which form the leg, and, subsequently, the leg control means ask the connection admission control means for acceptance of the leg on the basis of the leg termination points and the termination points obtained from the connection control means.