ZyXEL Communications Prestige 28641 - Manual (Page 45)

Installation 31
ISDN Setup
Menu 2 is for entering information about your ISDN line. Different
telephone companies deploy different types of switches for ISDN
service. Depending on the switch for your particular installation, you will
have a different number of telephone numbers, and if you are in North
America, you may also have SPIDs. Make sure that you have correct
and complete telephone numbers and SPIDs. You need to pass the
ISDN setup before your system can make an outgoing call or answer
an incoming call.
North American ISDN
Figure 3-7 Menu 2 - ISDN Setup for North America
1. Switch Type - Verify the switch type information with your
telephone company. For North America, select the type of switch
used by your telephone company. If your switch type is not
currently shown, press the space bar to change to the next switch;
repeat until you see the correct switch type. The Prestige will not be
able to place or to receive calls if the wrong switch type is specified.
If you are not sure, contact your telephone company to confirm the
exact switch type.