| 摘要 |
A method of providing presence information of a multiparty circuit-switched voice call, conference call to parties (102a,c,d) of the multiparty circuit-switched voice call. The method being executed by a call control node or MSC-S (108a), the method comprising generating party related i.e. presence status information of the parties (102a,c,d) using a descriptive language i.e. XML, and publishing the party related information to the parties (102a,c,d) such that the party related information is accessible by the parties (102a,c,d) involved in the conference call H.248 protocol is used for signalling between the call control node and the circuit switched user. |
