ZyXEL Communications ACCESSING INTERNET & INTRANET omni series - Manual (Page 101)

Advanced ISDN Call Control 89
Point-to-Point Configuration
In some areas, since Direct-Dial-In (DDI) number is less expensive
than MSN, users may want to subscribe to point-to-point ISDN to
employ the DDI function. In this case, only one TA can be connected
to the ISDN line and the TEI (Terminal Equipment Identifier) is
always ZERO. This can be done by setting the bit 1 of S-register
S119:
S119.1 = 0 - Disable point-to-point DDI function (default).
S119.1 = 1 - Enable point-to-point DDI function.
Placing a Call
To initiate a call, configure the TA according to the Bearer Service
(or protocol) you want to use.
•
ATBnn - for ISDN data calls.
Placing a call for DSS1
The ATDx command is used for dialing as follows:
ATDx[Yn][Nn]called_party_number[/[Zn]called-party-
subaddress/]
x = I (for ISDN data calls), A (for the analog adapter 1), or B (for the
analog adapter 2).
Yn specifies the type of number:
•
Y0 - unknown (default if Yn is omitted).
•
Y1 - international number.
•
Y2 - national number.
•
Y3 - network specific number.
•
Y4 - subscriber number.
Nn is the identifier of numbering plan: