AEQ
PHOENIX STRATOS
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7. RTP PUBLIC IP: parameter that will tell the unit which public IP will correspond to
the RTP of its IP interface, so that it can send the said IP in its SIP messages. The
router or firewall administrator must tell you the value of this parameter. Usually the
administrator will take out SIP traffic and RTP using the same public IP configure in
point number 3. For instance
212.170.180.177
8. RTP PUBLIC PORT: parameter that will tell the Phoenix STRATOS which public
port will correspond to the RTP of its IP interface, so that it can send the said port in
its SIP messages. The router or firewall administrator must tell you the value of this
parameter in order to make the required port-forwarding. For instance: 8002
In the aforementioned note the detailed configuration and need of port-forwarding is explained.
4.3.3. AUTO 1 (local network audio).
This mode will be used primarily when two units that are in the same local network need to
communicate with each other, when the Proxy SIP is on the Internet and it’s the one provided
by AEQ (sip.aeq.es).
4.3.4. AUTO 2 (local network audio).
This mode will be used primarily when two units that are in the same local network need to
communicate with each other, when a Proxy SIP on the Internet is used, it’s not the one
provided by AEQ (sip.aeq.es) and only if the AUTO1 mode doesn’t work properly.
4.3.5. AUTO 3 (audio over internet).
This mode will be used mainly when you wish to put two units in communication with each other
through the Internet, working with no Proxy (DIRECT SIP mode) or using the Proxy SIP
provided by AEQ (sip.aeq.es) (PROXY SIP mode). The two configuration parameters available
on screen for this mode are:
1. STUN SERVER: parameter that tells the unit the STUN server that will be used. On
the Internet there is multitude of public STUN servers. By default, the IP address of
stun.sipgate.net server is configured: 217.10.68.152.
2. STUN PORT: parameter that tells the unit the STUN server port assigned by the
administrator. By default: 3478.
NOTE: in this mode the Phoenix STRATOS behaves in the exact same way as the
Phoenix Mobile unit when it is using a STUN server.
4.3.6. AUTO 4 (audio over internet).
This mode is equivalent to AUTO3 but it will be used the SIP server is not the one provided by
AEQ and there are problems with AUTO3 mode. The configuration parameters are the same as
for AUTO3 (STUN server specification).
4.4. FEC modes and reception buffer configuration.
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FEC error correction mode. Error correction is performed by sending redundant
information that allows the receiver to recompose the lost data in case of not-perfect
transmissions.
Forward error correction always generates a higher binary rate, and this in turn can
generate more and more losses in very narrow transmission channels, as well as
delays. It is recommended that the communication is started with no FEC (OFF) and,
once established, experiment with the different available modes in case of problems
and check if the results are better with some of them.
•
LOWEST: generates a 40% higher binary rate and produces a 575ms
additional delay.
•
LOW: generates a 50% higher binary rate and produces a 375ms additional
delay.
•
MIDDLE: generates a 66% higher binary rate and produces 225ms additional
delay.
