| 摘要 |
<p>When a mobile 20 based in a mobile telecommunications network 12,13,14 providing IP based voice and multimedia services visits another network 56,62,64 , on registration of the visiting mobile, the home network sends to the visited network at least one Redirection Criterion which the visited network uses to decide on a per call basis whether to set up a call to or from the visiting mobile or to request the home network to set up the call. One Redirection Criterion is whether the visited network supports CAMEL. Another Redirection Criterion can be a series of call related criteria, such as short code dialling. <IMAGE> <IMAGE></p> |
