Nokia 9290 Setting up Dial-in Service - Page 6

Nokia Mobile Phones Nokia 9290 Communicator Setting Up Dial-In Service 6 (11) Available connection speeds are: Connection type Remote modem type Normal data call Analog High-speed data call ISDN V.110 ISDN V.120 Analog ISDN V.110 ISDN V.120 1 time slot Autobauding, 9600, 14400 9600 or 14400 9600 or 14400 9600-14400 9600-14400 9600-14400 2 time slots Not available Not available Not available 19200-28800 19200-28800 19200-28800 3 time slots Not available Not available Not available Not available 28800-38400 28800-43200 When HSCSD connections are used, the user may control how many time slots are used for the connection. Some GSM operators may charge on a slot amount usage basis, while other GSM operators may implement a fixed charging model for HSCSD calls. Please contact your network operator for HSCSD coverage and charging details. Modem init string is empty by default, but any valid GSM AT command can be typed here (start the string with "at"). AT strings are used to configure the internal modem of the Nokia 9290 Communicator. If you experience problems when creating data calls, please contact your GSM network operator or Internet service provider, who may provide a suitable configuration string for this setting. 2.3.5 Call Back Today it is very important to have the best available security in Internet connections. One feature to increase security in the Nokia 9290 Communicator is support for call back on a PPP link. The other advantage of the call back is to control phone costs of mobile terminals. When using call back in the Nokia 9290 Communicator, call back is requested during PPP negotiation. After negotiating call back, the remote server should close the connection and call back within one minute (60 seconds) using the same connection rate which was used to connected to the call back server. There are three call back modes available: • IETF PPP callback with a server-specified number (type 0) • Microsoft Callback with a server-specified number • Microsoft Callback with a client-supplied number Use call back is used to set call back feature on or off. If this is set to "Yes", the callback will be negotiated during the PPP link configuration phase. Call back type contains three alternatives. The first two options (MS call back and IETF call back) will use server number call back, meaning that the call back number is stored in a database on the remote server. The remote server finds the correct call back number after the client has authenticated itself to the server. Copyright  Nokia Corporation 2001-2002. All rights reserved.