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力強,集成度高，穩定性強。是最先進的通訊產品技術標準：按〈YD／T729－94《程控交換機進網檢測方法》，GF002－9002.4《郵電部電話交換設備總技術規范書》，YD344－90《自動交換技術要求》與國際電信聯盟（ITU-T）等國際標準。最大容量：10000門供電：AC220V?10％或DC48V音源頻率：450HZ振鈴信號：AC75V 25HZ用戶饋電：18MA功耗：25W－500W主要功能：【主要功能100余項不能全例】直撥分機：外線直接撥入分機號來電顯示：可顯示外線與內線來電號碼