Vivotek VS2402 Specifications download pdf (Page 17)

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Modem Environment

Hardware installation

Though Video Server is designed to serve real-time images in Ethernet, it also supports

the dial-up network. 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, Video Server will detect if any external modem is connected to COM2. As

soon as a modem is detected, the heartbeat LED will flash periodically. If no modem

responds, Video Server will assume the included null modem cable is connected to

perform system configuration. Then both LED’s under the power LED will turn on until

the dial-up connection over null modem is established.

Installations of both null modem and modem are introduced as follows. The null modem

mode can be used for point-to-point connection in local environment; the modem mode

also applies to TA in ISDN network. Though the baud rate can be setup to 115200 bit per

second, the actual data rate depends on the network connection.

In the following content, dial-in connection denotes a passive Video Server waiting for a

phone call to establish a point-to-point connection. Dial-out connection denotes an

active Video Server 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

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Vivotek VS2402 Specifications Page 17