| 摘要 |
To efficiently select early media data, the invention discloses a method for selecting useful data (early media data 13, 14) that is transmitted during the initiation of a call between a calling subscriber (terminal A) and at least one called subscriber (terminal B and/or terminal B') via at least one telecommunications network (SIP proxy). According to said method, recipient-address data for the called subscriber (IP b, port B) and transmission-address data (IP b, port b) for said called subscriber is removed from a response message (provisional response/final response 9, 10; 11, 12) of a called subscriber (B or B') that is received by the calling subscriber (A) and said called subscriber transmission-address data (IP b, port b) is used by the calling subscriber (A) to select the useful data (early media 13,14) of a called subscriber (B; B'), which has been received by the calling subscriber (A).
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