用于 HDM3310總線(xiàn)消防電話(huà)總機間的網(wǎng)絡(luò )連接，具有 A/B端，可各連接 1臺消防電話(huà)總機的通訊總線(xiàn)，實(shí)現數

字通信和語(yǔ)音信號的路由傳輸。 ★ 由通訊總線(xiàn)為網(wǎng)絡(luò )路由器進(jìn)行供電，無(wú)需外接電源，工作電壓范圍為DC24V±4V。 ★ A/B端在各自接入的通訊總線(xiàn)系統中各占 1位編碼地址，有工作燈指示巡檢狀態(tài)。 ★ A/B端采用隔離電路設計，可減小通訊總線(xiàn)噪聲串擾。 ★ A端適于連接中心控制消防電話(huà)總機，而 B端連接其他分區的消防電話(huà)總機。 ★ 金屬外殼，不易損毀，抗干擾能力強。

★ Used for networking two or more HDM3310 addressable telehphone exchange, designed side A and B,

which connect bus-line of two exchanges respectively and realize bridging and networking voice and

digital signal. ★ Power supplied by exchange bus-line, no additional power source needed, rated voltage range: DC18-

DC26V ★ Isolated design between Side A and Side B, to minimizing crosstalk noise. ★ Side A is designed to connect to central control exchange, side B connects to other exchange. ★ Metal shell, not easy to broke, has strong shock resistance and anti-jam capability.