Vidicode V-Tap VoIP Manual page 17

Once a connection has been established between the V-Tap VoIP and
the receiving Tunnel server, the chosen port number is kept active
for the duration of the communication session. When connection is
lost for some reason, a new source port is chosen for the next
connection. This ensures fast reconnection, because the TCP protocol
does not allow the same source port to be used again within a short
time. After an OS specific timeout of normally a few minutes, the
port numbers become available again for reuse.
It is therefore not recommended to select a fixed number for the
Tunnel Source Port in cases where live streaming is done without
using an SD card.
Tunnel Connect Timeout
This timeout is used when the V-Tap VoIP tries to connect to the
Tunnel server. The default 22 seconds is enough to send 4 requests. If
no reply comes from the remote side within the timeout, the V-Tap
starts trying again after a few seconds with a new source port
number (see above). Storage onto SD card just continues and is not
interrupted by any connection or disconnection of the Tunnel.
Tunnel Idle Timeout
This timeout is used to disconnect the active tunnel connection, only
when no packets are received (sniffed) anymore from the local
connected network. Default, the idle-timeout is disabled and the
tunnel stays connected forever.
The timeout is added for (yet) unknown situations where it is not
allowed to have an open TCP connection for a long time.
Tunnel Data Encryption
The data inside the Tunnel protocol is sent encrypted over the
network. The used method is AES with a 256-bit Cryptographic Key.
For privacy reasons it is advised to leave the encryption enabled.
Tunnel Encryption Password
This parameter is also used for the encryption of the Tunnel data.
The receiving side of the Tunnel data, the Apresa or CR-VoIP
software, must use the same password. Leaving the password empty
is still doing the encryption but is less secure.
The single and double quotation marks (' and ") cannot be used !
V-Tap VoIP Manual EN v2.7 Oct 2018 © 2017-2018 Vidicode 17