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SwItchBoArd SerVer
Switchboard Add (Address)
– shows the IP address of Switchboard.
STUN Server
– Enables the unit to contact the STUN server maintained by Comrex to learn what its public IP
address is.
Switchboard Port
– Allows selection of the TCP port of the Switchboard Server.
BrIc normAl SettIngS
IP connections use a concept known as ports to differentiate between different applications on the same computer.
A port is simply a number contained in the IP header, but it can be thought of as a physical opening in and out of
your computer. Most firewalls function by opening the network to traffic with only specific port numbers.
Each IP connection has a source and destination port. In most cases, the source port is unimportant, but the
destination port can determine whether or not the connection will be made. Certain incoming ports can be
firewalled to outside traffic, and in the case of more than one ACCESS unit behind a router (sharing a single public
IP address), the only way for them all to take incoming calls is to assign different incoming ports to each device.
CrossLock
makes connections on UDP port 9001. Legacy Comrex audio codec connections are made on UDP port
9000. In order to accept calls from both newer and older ACCESS units, you may need to open additional ports in
your router or firewall settings.
Changing the port for incoming connections is done under
System Settings
.
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