| 摘要 |
The multiplexer increases the stability of system, reduces a manufacture cost, and realizes an ISDN commercial service. The multiplexer includes a line connection means (12) which executes a loop back functions, a frame align means (16), a system control means (11), a monitor control means (17), a signal input-output means (21), a 2nd clock regeneration means (22), a multitude digital control means (24), a multitude analog control means (25), and a multitude line connersion means (26). The system control means has a 1st state display means (18) and 2nd state display means (23).
|
