User's Manual

Product Description
E1 Spread Spectrum Radios
4-2
4.1.1 General Description
A. Service Phone Interface(EOW): Service phone between the stations. Insert the RJ-11 of any general
phones and dial the IDU EOW number. If there are more than one equipments in the same network, you
may dial “***” for group connection. All the phones in the network will ring.
B. Symmetric E1 connector (RJ-48): 2E1: 2*RJ-48Ε4E1: 4* RJ-48Ε8E1: 8* RJ-48Ε16E1: 16* DB-25
(asymmetric). In this manual, we have taken 4E1 equipment as an example for easy explanation.
C. LED: FINE indicates normal working condition. ALM indicates critical alarming condition. RMT indicates
remote unstable condition. TEST indicates system undergoing loopback test.
Table 4-2 Definition of LED
Item Definition
Flashes @ 4Hz System is initializing
ON System is initializing or system is working well
FINE(green)
OFF Severe alarm happens (which affects normal communication)
Flashes @ 4Hz Minor alarm happens(which doesn’t affect normal
communication)
ON On when alarm happens(which affects normal communication)
ALM(red)
OFF No alarm
TEST(yellow) System is testing itself
Flashes @ 4Hz Can’t connect with remote equipment
ON MUX alarm happens on remote equipment
RMT(brown)
OFF Remote equipment is working well
D. LCD Display: LCD display is a standard LCD panel with 16 characters in a line, 2 lines in the panel.
Display the normal working temperature; transmit/receive power, capacity, frequency, BER and system
time.