One token per endpoint-address?

["Christian Mielke" <cmi@nc-ag.de>]

Hi,
when I have different web-services which all trust the same security token services which provides SAML 1.1 tokens, is it neccessary that a client must obtain one token for each service? Or is it sufficient when obtaining one token which can be used for all services that trust the security token service?
With kind regards
Christian