User Interaction With Sim At - Sony Ericsson K850i White Paper

Service
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User Interaction with SIM AT

Display text
Text of up to 240 characters (120 UCS coded) is
supported.
Text clearing times are 5-20 seconds with a 60-
second time-out limit for the user to clear the text.
'Key' responses:
• 'End key' – Proactive session terminated by
user.
• 'Back' – Backward move in proactive session.
Any other key clears the screen if the command is
performed successfully.
Get inkey
Prompt for a one-character input. Pressing 'Ok'
without entering a character gives warning mes-
sage "Minimum 1 character". 'Key' responses:
• 'C' clears current character.
• 'End key' terminates the proactive session.
• 'Back' – Backward move in the proactive ses-
sion.
• 'OK' – Command performed successfully.
Get input
Prompt for character input. The phone will refuse to
accept further input when maximum response
length is exceeded. UI Maximum Response
lengths:
• Digits Only – 160 characters.
• SMS default alphabet characters – 160 charac-
ters.
• Hidden Characters (digits only) – 20 characters.
'Key' responses:
• 'C' clears current character.
• 'End key' terminates the proactive session.
• 'Back' – Backward move in proactive session.
• 'OK' – Command performed successfully.
Mode
Select item
Scroll to highlight item for selection. 'Key'
responses:
• Navigational key press down – Scroll down list.
• Navigational key press up – Scroll up list.
• End key terminates proactive session.
• 'Back' – Backward move in proactive session.
• 'OK'– Command performed successfully.
Send short message
Default message "Sending message, please wait"
can be replaced for the Alpha Identifier text, or
suppressed completely if a null text is provided.
Default responses are "MESSAGE FAILED" or
"MESSAGE SENT". 'Key' responses:
• End key or 'Back' ends the proactive session.
Set up call
If you are on a call when the commands 'Set up
Call', 'Putting all other calls on hold' are sent, the
user will see the text 'Setting up a call current call
will be held'. If 'OK' is pressed the current call will
be put on hold and the new call set up. If the phone
is on a call when the command 'Set Up Call, dis-
connecting all other calls' is sent, the user will see
the text 'Setting up a call current call will be dis-
connected'. If the 'OK' key is pressed the current
call will be disconnected and the new call set up.
Set up menu
Incorporates a SIM Application Toolkit Menu Item
into the ME's main menu structure.
If an Alpha Identifier is supplied in the Set Up Menu
command, this is used as the SIM AT entry in the
ME's main menu. If no alpha identifier is supplied
and several items are found in the menu, a default
title is used. If the SIM AT Menu Item is selected by
pressing 'Select', all the items sent in the Set Up
Menu command will be available for selection, in
the same way as the Select Item command.
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White paper K850i
Support
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January 2008