3Com ISDN Modem manual Receiving Isdn Data Calls

Receiving ISDN Data Calls 7-5

either via the Configuration dialog box or setting S register 61=0.

By setting S register 61=1, all outgoing calls will be TollMizer calls.

Alternatively, you can place TollMizer calls on a call by call basis using the command ATDD <telephone number>. To manually dial a TollMizer call on a call-by-call basis, type the following:

ATDD <telephone number>

An example is as follows:

ATDD 1 908 555 1212

Note that the TollMizer feature is available for Multilink PPP calls as well.

Before using the TollMizer feature, check with your Internet service provider to verify that they support it and that it is enabled.

The device you are dialing into must be capable of generating the 2.1 kHz tone needed to disable the echo cancellers on the line. Refer to the Readme file located on the software diskette for more information.

Receiving ISDN Data Calls

The 3C882 ISDN modem can receive incoming circuit-switched data calls from other 3C882 ISDN modems or from ISDN devices.

When Auto Answer is disabled (S0=0, by default), a RING message is delivered to the RS-232 port upon reception of an incoming data call to the 3C882 ISDN modem. Enter the command AT A to answer the incoming data call. A CONNECT message is then delivered to the RS-232 port upon successful connection.