Sony Ericsson GC79 - Manual (Page 81)

Appendix A - GSM Connection Parameters 81
CSD/HSCSD Specific Parameters
* Only available with ISDN V.110 or V.120 connection mode.
Required Useful information
Preferred
Connection
Speed (bits/s) Select your preferred network connection speed from the drop down list
provided:
9600, 14400, 19200, 28800, 38400, 43200* or 57600*
Connection
Mode Select the method you want to use to connect to the network from the options
provided:
analogue, ISDN V.110 or ISDN V.120
Compression Use to speed up data transfer. You can select to Enable Data
Compression and Header Compression.
Callback
Number Enter the number the a callback should be made to. You can only use
Callback if you are connecting to a source that gives permission for
callbacks to be made, for example your company server.