短語詞組短語playing ringback 并回給主叫一個回鈴音faultmans ringback 線務員回振鈴功能ringback music 彩鈴Ringback tone 回鈴音ringback tones 回鈴音ringback service 回振鈴業(yè)務RBT RingBack Tone 回鈴音ringback to life 使生動;使蘇醒;使活Immediate Ringback Tone 即時回鈴音 返回 ringback