Nortel Networks NN46110-602 manual Setting up the VPN Router, Setting up the modem

Appendix B Using serial PPP 167

Setting up the modem

The following procedure assumes that you are using a 3Com/US Robotics 56K x2 modem. It describes how to set up a modem to communicate with the VPN Router using a dial-up networking connection. Table 5 lists the DIP switch settings.

Table 5 DIP switch configuration

Parameter	Setting
Data Terminal Ready	On
Verbal Result Codes	On
Suppress Result Codes	On
Echo Offline Commands	Off
Auto Answer (must be set)	On
Carrier Detect Normal	On
Load NVRAM Defaults	On
Dumb Mode	Off

Setting up the VPN Router

To set up the VPN Router’s parameters through the Web interface:

1Select System > Settings.

2Under the Serial Port option, select one of the following modes of operation :

•Serial Menu (default)—leaves the VPN Router’s serial interface in the traditional serial menu mode. In this mode, no serial PPP is supported. When connecting a program such as Hyper Terminal to the interface, the standard serial interface menu appears. In Auto Detect mode, if you are using a terminal emulator, such as Hyper Terminal, you must press Enter several times to get the logon and password prompt. Also, you can ignore the modem initialization string (which can or cannot be in use) that is displayed on the Hyper Terminal window.

•PPP—you can set up the VPN Router to use Point-to-Point Protocol (PPP) over the serial port. You can use this feature to manage the VPN Router from a remote location using PPP and the serial interface. If the VPN Router becomes unreachable over the Internet, you can still dial up and manage it through the serial interface menu. You can use this feature

Nortel VPN Router Troubleshooting