User manual SONY ERICSSON GC79

[. . . ] GC79 Sony Ericsson GPRS / Wireless LAN PC Card GC79 User's Guide Content Content . 64 64 67 74 74 74 76 76 77 78 79 79 Appendix A - GSM Connection Parameters. 81 Contents 3 Appendix B - Windows Log on using a GSM/GPRS Dial-up Connection . 83 Appendix D- Initiating a HSCSD Connection from Outside the Wireless Manager . [. . . ] Click Apply when you have finished to transfer the changes back to your GC79. This may take a few seconds. Networks Current Network You can select which network you want to use by going to Networks and then choosing Current Network. Searching for the available networks: · Click Retrieve, the current network appears in the box with all the other currently available networks. The available networks will fall into one of the following three categories: · · · The home network, the one with which you have subscription. Available networks, networks that your home mobile operator has a roaming agreement with. Forbidden networks, you can't use these networks except for emergency calls. If your home network and a forbidden network come to an agreement that allows you to use the forbidden network, you can select this network even though it is forbidden. 42 Wireless Manager Telephony Settings Screen Choosing another network: 1. If you are not allowed to use the network that you have chosen, Forbidden is displayed. Note: HSCSD is not available in every GSM network and requires a supplementary roaming agreement between mobile operators for visiting users to use HSCSD. Check with your home operator regarding the country or region in which you want to roam. GPRS is commonly available in GSM networks, but fewer roaming agreements are in place. You may therefore need to explicitly select one of the available networks in order to use GPRS when abroad. Check with your home operator to find out which networks are GPRS roaming partners in the country or region in which you want to roam. Preferred (network) Function support is network operator dependant. This is typically set up by your mobile operator as part of SIM manufacture. Preferred roaming partners are placed in the list so that you have the greatest range of available services whilst roaming. When the home network is not available, the GC79 will check the available networks against the preferred network list and select the one placed highest. Click Add, a new dialog with all the networks known to the GC79 appears on the screen. Note: If the list of preferred networks is full, the Add button is disabled (grey). Wireless Manager Telephony Settings Screen 43 Frequency Band GSM operates in a number of different frequency bands, where available. 900 and 1800 MHz are used in Europe, Asia, Australasia and Africa, whilst the 1900 MHz band is used in North and South America. By default your GC79 operates in 'tri-band' mode and automatically finds available networks in any of these frequency bands. See GSM Performance and technical characteristics on page 68 for a list of GSM frequency ranges. Forward (Divert) Calls Note: The GC79 does not make or answer voice calls. The forward function enables you to send a voice call to an alternative number where it can be answered. [. . . ] Can provide circuit-switched data connections in multiples of 64 kbps. A Windows device driver interface enabling a single NIC to support multiple network protocols. A security procedure where the user is given a new password for each login. PCS Personal Communications Services, often used to describe GSM1900 networks. [. . . ]