AEQ
PHOENIX STRATOS
75
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Check that the V.35 interface is assigned to the channel.
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Select the encoding mode.
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You have the possibility of using the backup option, with its corresponding
configuration in BACK UP:
Activate or not the backup option.
Select the interface to use as a backup.
Select the encoding mode. Make sure that the mode you select is
compatible with the communications interface selected, especially as
regards the associated bit rates.
Define the minimum time interval for the connection to be considered
down and the communication interface switching to be performed.
Select the number of retries to be made before considering the
communication down.
Define the minimum time interval for the connection to be considered
down if synchronization is not performed, and for the communication
interface switching to be performed.
Define the destination toward which the backup connection is to be
launched. Depending on the communication interface you have
selected as a backup, this destination will be defined by an ISDN
subscriber number, a SIP identifier (URI) or an IP address.
•
Press the CALL button on the front panel again, or select the DIAL option on screen, to
make the call.
•
You can monitor the status of the call in the OLED screen:
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CALLING.
o
SYNCHRONIZING (depending on the communication interface, this may be an
extremely brief status).
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CONNECTED.
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Repeat the process above in the unit at the other end.
•
Verify that the SYNC LED beneath the CALL button is lighted in green to indicate that
the communication has been successfully established.
•
Press the ON AIR button associated with that communications channel to enable audio
to be transmitted over that interface in full duplex mode.
•
Once the connection has been established with the remote end, confirm the presence
of transmitted and received audio by checking the VUmeters on the front panel.
o
If necessary, adjust the levels in AUDIO SETTINGS
CODEC CHANNEL1
SETTINGS (or CODEC CHANNEL2 SETTINGS) menu or in ANALOG AUDIO
SETTINGS menu, according to the desired signal type.
5.4.1. Finalizing a V.35 communication.
•
To finalize the communication, simply press the CALL button associated with the
communications currently being used on the unit’s front panel. Repeat the process in
the unit at the other end.
5.5. Establishing an IP communication.
Several operating modes are available, depending on the protocol used for the communication
initiation.
The simplest –yet still very effective- mode, that we recommend for a start, is IP mode (RTP
Raw) with the “SmartRTP“ option activated (this option can be found under the AUTO menu),
as it will be adequate for most cases, together with the OPUS family of encoding algorithms.
When operating with audiocodecs from other manufacturers, you can use either IP mode
without “SmartRTP“ (almost every codec out there can operate in RTP mode) or, alternatively,
a SIP-based mode. When the IP address of the counterpart unit is not known (mobile
connections, dynamic IP, etc) the PROXY SIP mode is recommended, as it relies on an
external server to resolve IP addresses. On the other hand, if IP and ports are well-defined, it is
better to use DIRECT SIP. Select any of the N/ACIP recommended encoding algorithms, such
as G722 or MPEG-1 /2, depending on the quality required, acceptable delay and available
bandwidth.
