产品名称：BLACK BOX MT195A-T1    
型号：MT195A-T1    
品牌：BLACK BOX

描述：
Send RS-232 data four miles at 19.2 kbps or up to 15 miles over 24 AWG 
wire at 1200 bps! 
规格：
Plug-and-play.
Put one unit on each side of the dry copper pair, connect your T1 devices, 
and go.
Use only two polarity-insensitive pins so you can connect either wire to 
either pin.
Operate in Clear Channel mode to easily transport voice and data circuits 
(F-bit included.)
Check status via the front-panel LEDs.
Rackmount panels are also available.