NETGEAR XM128 ISDN manual Placing a Call for DSS1, Point-to-Point Configuration

Reference Guide for the Model XM128 ISDN Digital Modem

Point-to-Point Configuration

In some areas, the Direct-Dial-In (DDI) number is less expensive than the MSN; therefore, you might want to subscribe to point-to-point ISDN to employ the DDI function. In this case, only one modem can be connected to the ISDN line and the TEI (Terminal Equipment Identifier) is always zero. The TEI is established by setting the bit 1 of S-register S119 as follows:

•S119.1 = 0 to disable point-to-point DDI function (default)

•S119.1 = 1 to enable point-to-point DDI function

Placing a Call

To initiate a call, configure the Model XM128 modem according to the bearer service (or protocol) that you want to use.

ATBnn is used for ISDN data calls.

Placing a Call for DSS1

The ATDx command ATDx[Yn][Nn]called_party_number[/[Zn]called-party-subaddress/] is used for dialing.

Where 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 for unknown (d efault if Yn is omitted)

•Y1 for international number

•Y2 for national number

•Y3 for network specific number

•Y4 for subscriber number

Advanced ISDN 7-11