User`s guide

4: Setup and Conguration • 19
©2014 Axia Audio - Rev.1.3.8
ned GPIO port. The pin number dened the GPI and
GPO, state and command, associated with a function.
More on GPIO is the in the following section.
Listen ON (Lstn On)
The checkbox denes if the external source should
be a default listen state. If enabled, the source would be
in listen state upon the source loading to a key.
Talkback (TB)
The TB checkbox denes the external source as an
Axia console backfeed enabled source. This requires that
the Axia console support the Flex source (available in
Element version 2.6-series for example). This feature al-
lows the intercom station to tap into the return audio go-
ing to a codec or a headphone position (tap into the back-
feed associated with a source). Refer to case examples
for a better picture of this feature.
IFB Destination
The text eld known as the IFB destination is used
to dene an IP address and port of a device that supports
Livewire routing protocol (most Livewire enabled de-
vices). This allows the intercom station to issue a route
change when Talk is engaged and send the intercom’s
audio to the device. The format of the text is written in
the following manner:
IP.ADDRESS/PORT
192.168.2.35/3
In the above example, an Axia analog xNode (ip ad-
dress 192.168.2.35) has output 3 feeding into a stereo
codec. Engaging the Talk mode on the intercom station
will route the intercom’s mic to the output and when the
mode is released, the previous source will be re-routed.
-login
The login text eld supports the IFB Destination
in cases where the device has a user password dened.
Entering in the password value allows the intercom sta-
tion to successfully login to the device and make a route
change.
Delete
This checkbox, when selected and pressing the Apply
button will remove the dened external source. Any key
assigned to the source will still be congured to the inval-
id source. You will be required, in addition, to edit any key
assignments set to the external source which is deleted.
GPIO setup
General Purpose Input and Output (GPIO) has been
the means of logic state exchange between devices for
years. The Axia Intercoms provide several different
GPIO ports to accomplish the application needs. All sta-
tions include 8 virtual ports which follow the standard
Axia GPIO of 5 inputs and 5 outputs. The virtual ports
are used with External Source conguration. All sta-
tions will have a main GPIO port which is congured
with predened station logic. Some stations include an
additional GPIO port which is the hardware port on the
back panel if available.
So the virtual ports have no assigned function unless
specied through the external source conguration of
Talk and Listen states.
The main GPIO port has the following dened logic.
PIN FUNCTION
GPO Pin1 Mute Speaker command
GPO Pin2 Busy (also mutes speaker)
GPO Pin3
GPO Pin4
GPO Pin5
GPI Pin1 Listening Lamp
GPI Pin2
GPI Pin3 Ring Lamp
GPI Pin4 Mic Mute Lamp
GPI Pin5 Talking Lamp
Pin12 GPI 2
Pin13 GPI 3
Pin14 GPI 4
Pin15 GPI 5
Main GPIO Port
The hardware port has no assigned functions. Its
function will depend on conguration. Typically the
hardware GPIO port would be mapped to the main
GPIO port and this is done through GPIO routing.