Re: H.450 : package callsetup Vs supplementary-service h450.12
H.450.12, Common Information Additional Network Feature for H.323. A means to communicate additional miscellaneous information between endpoints. E.g. whether certain features are available, and/or allowed.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...