Draytek Vigor IPPBX 2820 Series User Manual page 111

PPP/MP Setup
IP Address Assignment
Method (IPCP)
After finishing all the settings here, please click OK to save the configuration.
VigorIPPBX 2820 Series User's Guide
schedules. Refer to section Applications>> Schedule for
detailed configuration.
There are three link types provided here
Link Type
–
for different purpose.
dial-out function. Dialup 64Kbps allows you to use one
ISDN B channel for Internet access. Dialup 128Kbps
allows you to use both ISDN B channels for Internet access.
Dialup BOD stands for bandwidth-on-demand. The router
will use only one B channel in low traffic situations. Once
the single B channel bandwidth is fully used, the other B
channel will be activated automatically through the dialup.
For more detailed BOD parameter settings, please refer to
the section of Call Control.
PPP Authentication - PAP only allows you to configure
the PPP session to use the PAP protocol to negotiate the
username and password with the ISP. PAP or CHAP is to
configure the PPP session to use the PAP or CHAP
protocols to negotiate the username and password with the
ISP.
Idle Timeout - Idle timeout means the router will be
disconnect after being idle for a preset amount of time. The
default is 180 seconds. If you set the time to 0, the ISDN
connection to the ISP will always remain on.
In most environments, you should not change these settings
as most ISPs provide a dynamic IP address for the router
when it connects to the ISP. If your ISP provides a fixed IP
address, check Yes and enter the IP address in the field of
Fixed IP Address.
103
Link Disable disables the ISDN