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（2BD），ISDN中繼“U”接口，2.048M/S數(shù)字中繼,環(huán)路中繼,磁石中繼,栽波中繼,E/M中繼等多種接口,支持中國(guó)1號(hào)信令與7號(hào)信令。整機(jī)技術(shù)先進(jìn)，組網(wǎng)能力強(qiáng),集成度高，穩(wěn)定性強(qiáng)。是最先進(jìn)的通訊產(chǎn)品技術(shù)標(biāo)準(zhǔn)：按〈YD／T729－94《程控交換機(jī)進(jìn)網(wǎng)檢測(cè)方法》，GF002－9002.4《郵電部電話(huà)交換設(shè)備總技術(shù)規(guī)范書(shū)》，YD344－90《自動(dòng)交換技術(shù)要求》與國(guó)際電信聯(lián)盟（ITU-T）等國(guó)際標(biāo)準(zhǔn)。最大容量：10000門(mén)供電：AC220V?10％或DC48V音源頻率：450HZ振鈴信號(hào)：AC75V 25HZ用戶(hù)饋電：18MA功耗：25W－500W主要功能：【主要功能100余項(xiàng)不能全例】直撥分機(jī)：外線(xiàn)直接撥入分機(jī)號(hào)來(lái)電顯示：可顯示外線(xiàn)與內(nèi)線(xiàn)來(lái)電號(hào)碼