ZyXEL Communications Omni TA128 - Manual (Page 96)

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ATCN<Prefix> - When and only when the type-of-number
denotes a national number will this "Prefix" be added to the
Calling-party-number before indicating it to the DTE.
•
ATCN<> - Disable the national number prefix-adding function.
(Default)
O O NOTE
: The angle brackets '<' and '>' are part of this command.
Disable inbound call connection
In some cases, the user may desire the TA128 to not answer any
incoming calls. This can be done by setting the bit 0 of S-register
S118:
•
S118.0=0 - Enable the TA128 to answer a call (by default).
•
S118.0=1 - Disable the TA128 to answer any call.
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 TA128 according to the Bearer
Service (or protocol) you want to use.
•
ATBnn - for ISDN data calls.