Sony GC79 - Manual (Page 41)

GC79 Manager Telephony Settings Screen 41
Frequency Band
GSM operates in a number of different frequency bands. 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. It is not recommended to change this setting. See GSM Performance and
technical characteristics on page 64 for a list of GSM frequency ranges.
Divert Calls
Note:
The GC79 does not make or answer voice calls. The divert function enables you to send a
voice call to an alternative number where it can be answered. For example, the mobile network
voicemail service. However you can make and answer fax and data calls, providing you have
appropriate software on your PC to handle them.
All
If you want to make certain that all your incoming calls are taken care of when you cannot answer
them, you can use the Call divert service to divert them to another number that can handle the types
of calls you expect to receive.
Note:
The Call divert service may not be available on all networks.
Selecting a call divert setting:
1. To obtain your current call divert settings from the network, click Retrieve.
2. Make your changes by identifying when you want to divert your incoming calls. You can select
from four different diversion options:
– Always: this diverts all incoming calls to the phone number that you have entered in the
text box
– When busy: for example, on CSD calls
– No reply
– Not reachable: for example, when your phone is turned off
3. If you know which number to divert your calls to, then type the number in the text box next
to the divert option you have chosen.
Or
Click
to choose a phone number from your phone book.
4. Click Apply, to transfer your new settings to your GC79. This may take a few seconds.
Your call divert setting has now been stored in the network.
Voice
You can use the Call divert service to divert your voice calls to another phone number.
Note:
The Call divert service may not be available on all networks.