PortaNet User Manual
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III.1.3.3
Auxiliary data: GPIO and RS232 ports.
The GPIO port on a DB9 connector allows remote
control/signalling by means of remote contact closures.
There are two ground contact inputs and two relay
outputs.
Another DB9 connector at the rear panel provides an
RS232 port for sending/receiving auxiliary data along
with
the
encoded
audio
for
IP
and
ISDN
communications.
Over ISDN, the auxiliary data and GPIO information will be only available in
those compression algorithms which support ancillary data along with the
encoded audio, and when this option is enabled.
Over ISDN, it is possible to choose between ProntoNet format and Pronto2/3
format (in which the GPIOs information cannot be sent). To be backward
compatible with ISDN Pronto2/3 Prodys devices, select Pronto2/3 format.
When selecting IP as communication interface, the auxiliary data can be sent via
a different path, different from the audio one. This method has 3 big
advantages: less delay independent from the audio codification delay; the
possibility to send/receive auxiliary data regardless of the compression mode
used for the audio communication; and the possibility to send/receive the User
bit of the AES/EBU frame. The drawback is that the audio and data delay won’t
be the same.
III.1.3.4
Ethernet port – the LAN Connector
The LAN socket is an standard 100Base-Tx (10/100 Mbps) Ethernet connection
that takes a RJ45 plug. Through this Ethernet port it is possible to transmit and
receive audio, as well as manage the equipment. Next to the socket there are
three LEDs that indicate different states for the connection and these are very
useful in problem-solving situations.
LAN LED’s:
Summary of Contents for PortaNet
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