User`s manual

Key length
This is the length of the generated key in bits. 1024 Bits are
supposed to be sufficient for most cases. Longer keys may
result in slower response time of the SP1200A during
connection establishment.
4.6.5 Serial Port
The SP1200A’s Serial Settings allows you to specify what device is connected
to the serial port and how to use it.
Configuration or Console Login
Do not use the serial port for any special function but use it only for the initial
configuration.
Modem
The SP1200A offers remote access using a telephone line in addition to the
standard access over the built-in Ethernet adapter. The modem needs to be
connected to the serial interface of the SP1200A. Logically, connecting to the
SP1200A using a telephone line means nothing else than building up a
dedicated point-to-point connection from your console computer to the device.
In other words, the SP1200A acts as an Internet Service Provider (ISP) to
which you can dial in. The connection is established using the Point-to-Point
Protocol (PPP). Before you connect to the SP1200A, make sure to configure
your console computer accordingly. For instance, on Windows based
operating systems you can configure a dial-up network connection, which
defaults to the right settings like PPP. The Modem Settings panel allows you to
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