发明名称 |
METHOD AND APPARATUS FOR PROVIDING CONFERENCE CALL ANNOUNCEMENT USING SIP SIGNALLING IN A COMMUNICATION SYSTEM |
摘要 |
A method and corresponding equipment for setting up a conference call via a communication network that uses session initiation protocol (SIP) signalling for call setup, the method including steps (Ela E2a E3a E4a) of providing during the call setup signalling to a subscriber invited to participate in the conference call an indication that the call is a conference call and including in the call setup signalling a reference to a group document indicating information about the conference call, such as the other invited participants, or including the group document itself. |
申请公布号 |
WO2004077796(A2) |
申请公布日期 |
2004.09.10 |
申请号 |
WO2004IB00492 |
申请日期 |
2004.02.25 |
申请人 |
NOKIA CORPORATION;NOKIA INC;COSTA-REQUENA, JOSE;KUUSINEN, JARMO;ESPIGARES, INMACULADA |
发明人 |
COSTA-REQUENA, JOSE;KUUSINEN, JARMO;ESPIGARES, INMACULADA |
分类号 |
H04L12/16;H04M;H04M3/42;H04M3/56;H04Q11/00 |
主分类号 |
H04L12/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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