[asterisk-users] Controlling cell phone VM / Fax waiting notification icon for asterisk VM

[OCG Technical Support]

I little more digging and I confirmed that cell phone VM and FAX waiting
icons are in fact controlled by a proprietary SMS message format.  Here's
what I found:

 

 

Message Waiting Indication Group: Store Message 
This Group allows an indication to be provided to the user about the status
of types of 
message waiting on systems connected to the GSM PLMN. The mobile may present
this 
indication as an icon on the screen, or other MMI indication. The mobile may
take note of 
the Origination Address for messages in this group and group 1100. For each
indication 
supported, the mobile may provide storage for the Origination Address which
is to control 
the mobile indicator. 
Text included in the user data is coded in the Default Alphabet. 
Where a message is received with bits 7..4 set to 1101, the mobile shall
store the text of 
the SMS message in addition to setting the indication. 
Bits 3 indicates Indication Sense: 
Bit 3 
0 Set Indication Inactive 
1 Set Indication Active 
Bit 2 is reserved, and set to 0 
Bit 1 Bit 0 Indication Type: 
0 0 Voicemail Message Waiting 
0 1 Fax Message Waiting 
1 0 Electronic Mail Message Waiting 
1 1 Other Message Waiting* 
* Mobile manufacturers may implement the "Other Message Waiting" indication
as an 
additional indication without specifying the meaning. The meaning of this
indication is 
intended to be standardized in the future, so Operators should not make use
of this 
indication until the standard for this indication is finalized.

 

 

Now the tough part...does anyone want to create an app to send notification
to a cell phone to set/clear these bits?

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