Sony GC79 - Manual (Page 40)

40 GC79 Manager Telephony Settings Screen
• 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.
Choosing another network:
1. Uncheck the Automatically choose a network for me.
2. Select the network that you want to use.
3. Click Apply to transfer the setting to your GC79.
The message Please wait appears briefly on the screen. 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)
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.
If you want to add a new network:
1. Click Add, a new dialog with all the networks known to the GC79 appears on the screen.
2. Select the network that you want to add and click OK.
3. 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.
2. Click Remove.
3. 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.
2. Click the Up or Down arrows to rearrange the order.
3. 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).