VCS VideoJet X.21, Руководство пользователя

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Introduction
27
VideoJet X.21/G.703
Manual
(1) G.703 interface (DTE, RJ45) for connection with G.703 DCE
(2) Yellow TX LED for monitoring packet sending over the ISDN
port
(3) Green LINK LED for link test of ISDN connection
(4) Serial interface for configuration (
NCTerminal
, RS-232)
(5) Signalling input and relay output
(6) Power connector for connecting the AC plug power adapter
Fig. 2-6
VideoJet G.703
Rear Panel Connectors
The green LINK LED will provide ISDN status information: If the
LED is on, the ISDN port is properly connected to the ISDN net-
work.
The yellow TX (Transmit) LED will blink for each packet being trans-
mitted. Note that packet reception is not signalled.
The RS-232 interface allows for connection to the serial port of a
PC for simple configuration or for the control of the
VideoJet
X.21/G.703
unit. The interface features the full suite of RS-232
flow control signals.
The switching I/O-port allows for direct connection of external sig-
nalling devices, for example buttons or contacts. Also, the relay out-
put facilitates switching of peripheral devices, for example lights or
electric door openers.
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