ZyXEL Communications 2864I - Manual (Page 45)

32 Installation
analog call for this telephone number to the PHONE port
(a.k.a., ‘POTS’ port in North America and a/b adapter in
Europe). Set to Modem if you wish to route the incoming
analog call for this telephone number to the internal modem
(e.g., when the Prestige is used as a dial-in server for the
Remote Dial-in User).
5. SPID Number(s) - SPIDs are numbers used by a switch for
identification purposes. Depending on your switch type, you
may have zero, one, or two SPIDs assigned to your line. For
example, if your switch type is Northern Telecom Custom, you
will have to enter two SPID numbers.
DSS1 & 1TR6 ISDN
Figure 3-8 Menu 2 - ISDN Setup for DSS1