Report copyright - 移動通信ネットワークの新サービス 5 非電話サービ …(2) (IWF: Inter Work- ing Function) (IWF) MNP V. 42biS 5 V.32bis V.32 (4 ? /Þ2400b/s) V.22 ? ml?OOb/s) v.21
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