mirror of git://git.sysmocom.de/ofono
89 lines
4.1 KiB
Plaintext
89 lines
4.1 KiB
Plaintext
oFono - Open Source Telephony
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*****************************
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Purpose
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=======
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The purpose of this document is to enumerate all major functionality areas
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of oFono. In effect, this document will serve as the primary, up to date
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source of oFono feature information. It is intended for developers, managers
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and users alike to quickly gauge the progress of the project and feature
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availability.
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Sim Toolkit
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===========
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Supported Proactive Commands:
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- Display Text proactive command support. Upon receiving the proactive
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command notification oFono decodes it, including performing character
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conversion from packed/unpacked GSM 7bit and UCS2 to UTF-8 encoded text.
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The registered agent is then called using the DisplayText method on the
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SimToolkitAgent interface to handle the user interaction aspects.
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SIM-specified duration are handled. If immediate response to the SIM
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is required, oFono sends a terminal response immediately. DisplayText
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method is still executed normally, until a timeout occurs or a new
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proactive command arrives from the SIM.
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- Get Inkey proactive command support. When this command is received,
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oFono decodes it and checks what "flavor" it is. Depending on this, the
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SimToolkitAgent is called with a different method call:
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* If the Get Inkey flavor indicates that this is a simple Yes/No
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confirmation, then the RequestConfirmation method is called.
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* If the Get Inkey flavor indicates that the SIM only expects digits,
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then the RequestDigit method is called.
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* Otherwise the RequestKey method is called
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SIM specified durations are handled, if the user agent does not respond
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in the time allowed, then the 'No Response' Terminal Response is generated
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automatically.
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- Get Input proactive command support. When this command is received,
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oFono decodes it and checks what "flavor" it is. Depending on this, the
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SimToolkitAgent is called with a different method call:
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* If the Get Input flavor indicates that the SIM only expects digits,
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then the RequestDigits method is called.
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* Otherwise the RequestInput method is called
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- More Time proactive command support. This command is intended to notify
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that the SIM is still busy processing a command. For oFono, this proactive
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command is a no-op. It is always replied to successfully.
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- Setup Menu proactive command support. When this command is received, oFono
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parses the new main menu structure and updates its MainMenu and MainMenuTitle
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properties which reflect the items, icons and the alpha text of the
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proactive command. Soft key support and menu help system are ignored by
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oFono.
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- Select Item proactive command support. When this command is received, oFono
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decodes it and dispatches it to the SimToolkitAgent by calling the
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RequestSelection method. This method is passed the menu selection title,
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the selectable items and the default, if any.
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- Timer Management proactive command support. oFono supports starting,
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stopping and querying timer state flavors of this command. Up to eight
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timers are supported. This proactive command is handled completely
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inside oFono and no external user interaction is required.
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- Set Up Idle Mode Text proactive command support. Whenever oFono receives
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this proactive command, it updates the IdleText property on the main
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SimToolkit interface. Indications that this property has changed are
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handled by the usual means.
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Envelopes:
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- Timer Expiration envelope support. Whenever a timer expires (as started by
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the Timer Management proactive command) oFono forwards, this envelope type
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to the SIM. No external user interaction is required.
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- Menu Selection envelope support. The user can initiate a proactive command
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session by selecting something from the Sim Toolkit main menu. This is done
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by using the SimToolkit's SelectItem method. As a result, oFono will send
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the Menu Selection envelope to the SIM.
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- CBS-PP Download envelope support. When oFono receives a cell broadcast
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and on a channel listed in EFcbmid, it is dispatched to the SIM using the
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CBS-PP Download envelope. No user interaction is required or signaled
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whenever this occurs.
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