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发明名称
METHOD AND APPARATUS FOR ESTABLISHING TDD/TTY SERVICE OVER VOCODED CHANNELS
摘要
申请公布号
KR20010071856(A)
申请公布日期
2001.07.31
申请号
KR1020017000464
申请日期
2001.01.11
申请人
发明人
分类号
H04M1/725
主分类号
H04M1/725
代理机构
代理人
主权项
地址
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