The MC5-IP models provide a serial
port to allow you to connect either
a modem or ISDN terminal adapter.
This can be used as a primary,
secondary or backup access port
for global users, as best suits your
overall configuration.
IMPORTANT: When the MC5-IP is
accessible from the public Internet or
dial up connection, you must ensure
that sufficient

security measures

are employed.
Note: On non-IP models, the
COM2/MODEM port is reserved for
the support of future features.

To connect a modem or ISDN adapter

1 If possible, disconnect power from the MC5-IP and the modem or ISDN

adapter.

2 Connect a suitable serial modem (non-crossover) cable to the serial port on

the modem/ISDN adapter.

3 Connect the other end of the serial cable to the port labelled COM1 at the

rear of the MC5-IP.

Note: The default serial port speed is 115200 and a standard Hayes-compatible
auto-answer string is sent during startup. The default startup string is
‘ATZHS0=1’. Both the serial port speed and startup string settings can easily be
altered during configuration - see

Initial IP configuration

for more details. The

other serial settings are fixed at: No parity, 8 bit word and 1 stop bit.

Cable from modem

or ISDN adapter

MC5 rear panel