7
DIG:
10/100BASE-T Local loop-back, to check the opposite device and E1 circuit
REM:
E1 interface loop-back outward to test E1 line
PATT:
PBRS test. To produce and transmit the PBRS to the 10/100BASE input
connector, and to check whether the output signal of the 10/100BASE accord
with PBRS standard. If according, the PTOK light on, otherwise, off. By this
way, the status of E1 Line can be tested.
Push the PATT button, when loop circuit 1 is on, If PTOK is on , indicates device
works well ; loop circuit 1 off and loop circuit 2 on, indicates that fiber transmission
circuit and both side device work well
E1 LINE
PBRS Code
REC & CHK
E1
Interfa
ce
E1Int
10BInt
When testing, one of above loop back must be on
Loop 1
Loop 2
E1 line
