In doing some searching for the differences programmed into the GS502 from before the reg problem to after, I noticed that the following was changed...
Yes, send periodical SUBSCRIBE for Message Waiting Indication
No, do not send SUBSCRIBE for Message Waiting Indication
Originally it was set to 'no' but after the last provision, it now says 'yes'
Except for seeing the difference, I have no further knowledge about how it should work as I don't use the system VM.
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