Vivotek IP2121 - Manual (Page 22)

- 20 -
Modem Environment
Hardware installation
Before installing Network Camera, the administrator should memorize the serial
numbers on the packages respectively for the initial passwords.
To use a dial-up network, the Ethernet socket should be left disconnected since Ethernet
is the first priority among available interfaces. After powering up, Network Camera will
detect if any external modem is connected to the modem port. Once a modem is
detected, the heartbeat LED will flash periodically. If no modem responds, Network
Camera will assume the included null modem cable is connected to perform system
configuration. Then both LEDs under the power LED will turn on until null modem
connection is established.
If users have setup a remote dialup server or subscribed to an ISP service, Network
Camera can be configured to dial to the server upon special events. Otherwise it will wait
permanently for the user’s call to establish a network connection to provide services.
In the following content, dial-in connection denotes a passive Network Camera waiting
for a phone call to establish a point-to-point connection. Dial-out connection denotes an
active Network Camera to dial out to the other end of a dial-up server or any Internet
service provider, abbreviated as ISP, to request a point-to-point connection.
Cable connection
Null modem mode
Shut down the peripheral devices prior to connection and keep the power adaptor