| 发明名称 |
Session control system, communication terminal and servers |
| 摘要 |
<p>A SIP server (1) having the function of accepting simultaneous IPv4/IPv6 registrations from an IPv4/IPv6 dual SIP terminal (5-7), recognizing a protocol communicable with a communication partner terminal, and notifying the IPv4/IPv6 dual SIP terminals of the result of the recognition if necessary, thereby to allow VoIP communication between the IPv4/IPv6 dual SIP terminal and an IPv4 terminal or an IPv6 terminal to be the communication partner.</p> |
| 申请公布号 |
EP1515508(A2) |
申请公布日期 |
2005.03.16 |
| 申请号 |
EP20040002795 |
申请日期 |
2004.02.09 |
| 申请人 |
HITACHI, LTD. |
发明人 |
SAKAMOTO, KENICHI;YUMOTO, KAZUMA;KAWAI, ERI;KIYOTO, SATOSHI |
| 分类号 |
H04L12/70;H04L12/781;H04L29/06;H04M3/00;(IPC1-7):H04L29/06 |
主分类号 |
H04L12/70 |
| 代理机构 |
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代理人 |
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