| 摘要 |
<p>Simplification of IMS registration in the event of emergency calls is made possible by apparatuses and a method for setting up an emergency-call connection from a terminal (Figure 1: â¿¿terminalâ¿¿) to an IMS via a network (Figure 1: â¿¿S-CSCFâ¿¿, â¿¿P-CSCFâ¿¿, â¿¿GGSNâ¿¿, â¿¿SGSNâ¿¿, â¿¿Radio Access Networkâ¿¿...) visited by the terminal, where, if the terminal is already registered in the IMS, setup of an emergency-call connection dispenses with IMS registration of the terminal in the IMS for this emergency-call connection if a comparison between a network identification (â¿¿network identifierâ¿¿, Figure 1: â¿¿MCC1â¿¿/â¿¿MNC1â¿¿) for the visited network, of which the terminal was notified when it registered in the visited network, and a network identification for the terminal's home network reveals a match between these network identifications.</p> |
