Nortel Networks NN46110-602 - Manual (Page 167)

Appendix B Using serial PPP 167
Nortel VPN Router Troubleshooting
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.
Setting up the VPN Router
To set up the VPN Router’s parameters through the Web interface:
1 Select System > Settings.
2 Under 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
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