摘要
SHOT—D4设备是一种专用光电混合端机,它用于程控交换机S1240母局与RASM(远端模块)局之间的传输,能为两个用户架(即2000门)提供传输通道。当通信容量超过2000门时,可采用积木式迭加,组成容量更大的通信系统。采用该设备可以方便地将用户架作为远端模块搬出电信局,而交换设备的投资却不需要增加。
SHOT-D4 is a special O/E terminal equipment used for the transimission between SPC S1240 central office and RASM(remote terminal), which can provide transmission path for the two subscriber distribution frames(i. e. 2 000 lines). When the communication capacity exceeds 2 000 lines,a larger capacity communication system can be established by the way of building block systems. Furthermore, by using this equipment, the subscriber distribution frame can be easily removde out of the office and used as RASM without the additional investment for switching equipment.
出处
《光通信研究》
1994年第1期61-67,共7页
Study on Optical Communications