VCS VideoJet X.21, Manual

Page: 23 / 90

Introduction
25
VideoJet X.21/G.703
Manual
The green power LED will be lit as soon as power is supplied to the
unit and the unit is ready for service. During an active connection to
a
VideoJet X.21/G.703
unit, the LED will blink to indicate the
connection status.
The serial interface for transparent data transmission does only
provide serial send (pin 3) and receive (pin 2) signals and ground
(pin 5). No hardware flow control signals are provided.
The handset interface facilitates direct connection of a telephone
handset.
Note that the audio connectors, (3), (4) and (5), are only functional
for units equipped with the optional audio interface. The model
name is appended by the letter “A” for audio in this case:
Video-
Jet
XSA/GSA
denotes a sending unit with installed audio option,
whereas
VideoJet
XEA/GEA
denotes the corresponding receiver
unit. Otherwise there is no difference in features, therefore all infor-
mation given for the basic units
VideoJet
XS/GS
and
Video-
Jet
XE/GE
does also apply to the models with integrated audio
functionality.
Note that either the handset or the line interface is active at any
given time. Selection of the interface is described in Chapter 5.