User manual SONY ERICSSON GC79

[. . . ] GC79 Sony Ericsson GPRS / Wireless LAN PC Card GC79 User's Guide Content Content . 11 Create a GPRS, HSCSD or CSD Connection . Browse the Internet via a GSM/GPRS Connection . 13 14 15 15 16 16 16 Create a Wireless LAN Connection . [. . . ] 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. A list of preferred networks is stored on the SIM card. 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. Automatic network selection must be enabled. Click Add, a new dialog with all the networks known to the GC79 appears on the screen. Select the network that you want to add and click OK. Click Apply to transfer the setting to your GC79 SIM card. If you want to delete a network from the list: 1. Select the network that you want to delete. Click Apply to transfer the setting to your GC79 SIM card. If you want to re-arrange the order of the networks listed: 1. Select the network that you want to move. Click the Up or Down arrows to rearrange the order. Click Apply to transfer the setting to your GC79 SIM card. 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. [. . . ] Service Provider A company that provides services and subscriptions to GC79 users. SIM card Subscriber Identity Module card ­ a card that must be inserted in any GSM-based mobile terminal. It contains subscriber details, security information and memory for a personal directory of numbers. The card can be a small plug-in type or credit card-sized, but both types have the same functions. [. . . ]