198 CHAPTER 6: DCC C ONFIGURATION[RouterB-Bri1/0] dialer-group 2[RouterB-Bri1/0] dialer route ip 100.1.1.1 8810048# Enable the local end to place return calls for ISDN calling number 8810048.[RouterB-Bri1/0] dialer call-in 8810048 callbackRouter-to-PC Callbackwith DCCNetwork requirementsFigure 30 presents a scenario where:■ PC and Router are interconnected through modems across a PSTN network.■ Interface Serial 2/0 on Router is assigned the IP address of 100.1.1.1/24.■ PC accepts the address assigned by Router.Configure PPP callback with C-DCC between Router and PC, specifying PC as thecallback client and Router as the callback server to make return calls according todialer routes.Network diagramFigure 30 Network diagram for router-to-PC callback with DCCConfiguration procedure1 Configure PC (installed with Windows 2000 for example)Do the following to create a dialup connection with callback capability enabled:# Place the modem connected to PC in auto answer mode.# Select [Start/Programs/Accessories/Communications/Network and Dial-upConnections]. In the [Network and Dial-up Connections] window, right-click onthe Make New Connection icon; and in the popup menu select the NewConnection...option. The [Network Connection Wizard] window appears. Click.# In the [Network Connection Type] dialog, select the Dial-up to the Internetoption, and click . The [Internet Connection Wizard] dialog appears. Selectto set up the Internet connection manually. Click .# In the [Setting up your Internet connection] dialog box, select the I connectthrough a phone line and a modem option. Click to set Internetaccount connection information.# Type in the phone number for dialing to the callback server. Click .# Type in the username and password that you want to use for PPP authenticationwhen connecting to the server. Click .PSTNModem RouterPC Modem100 .1. 1. 2/24 8810048 8810052 S 2/0100.1 . 1.1 /24Callback Client Callback Server