User's Manual

5.8GHz PDH User’s Manual
9
E1 Modem
without
transmission line
E1 Modem
with
transmission line
H. String Connection Port (NMS2)
: When there are more than two
sets of equipments
in the local stations, connect the IDU-NMS2 of this equipment to the IDU-NMS1 of the
other equipment. When the NMS2 are connected, the service telephone between
these equipments is put into function.
I. Data Transmission Port (AUX)
: Use the WINDOWS HyperTerminal functions as
given in Section 9.2. Connect the COM1 or COM2 (RS-232/DB-9) of the pc’s to this
port for simple file and data transmission.
J. Environment Detection Port
: Allows users to fully monitor the central controlling
room for the local station. For example: In the absence of human control in the remote
stations, the central controlling server is able to receive all fire alarms, power supply
etc. information. It can also control the light switches, oil switches etc. It totally
realizes the possibility of an intelligent management. All together, there are 8 input
ports and 4 output ports.
DB-25 pins for the Environmental Detection Port