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| 전화 회의 서비스 (A service that runs on an Office Communications Server Front End Server and that enables multiparty conferencing with PSTN callers connecting through an audio conferencing provider) | |||
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| 전화 회의 서비스 (A service that runs on an Office Communications Server Front End Server and that enables multiparty conferencing with PSTN callers connecting through an audio conferencing provider) | |||
