Draytek Vigor IPPBX 2820 Series User Manual page 106

Data call function is supported only when ISDN2 port is configured as ISDN-TE mode. In
normal case, the ISDN2 port is configured as ISDN-TE mode in default. If it is configured as
ISDN-S0 mode, the data call function will not be supported and Dialing to a Single ISP,
Dialing to Dual ISPs and Call Control functions will not be available.
In addition, if ISDN1 port is configured as ISDN-TE mode and ISDN2 is configured as
ISDN2-S0 mode, the data call function will not be supported and Dialing to a Single ISP,
Dialing to Dual ISPs and Call Control functions will not be available, either.
This page provides some basic ISDN settings such as enabling the ISDN port or not, MSN
numbers and blocked MSN numbers, etc.
Available settings are explained as follows:
Item
ISDN Setup
Description
ISDN Port - Click Enable to open the ISDN port and
Disable to close it.
Country Code - For proper operation on your local ISDN
network, you should choose the correct country code.
D-Channel Mode - It allows you to configure ISDN layer2
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VigorIPPBX 2820 Series User's Guide