Re: Retreiving deleted voicemails ( deleted from the phone )
to avoid this in the future on the class of service/messages page there is an option to send messages to deleted items folder.the user must be of this calass of service type. Then you can bump up your deleted items retention time on exchange . this is done by right clicking on mailbox store under your server and selecting properties/limits. bump this up to 30 days if you choose. as the name indicates this will keep items in the delted items folder for the time specified and/or until a backup occurs
for the messages that are already gone they are gone unless you can restore them from backup because I am sure you are doing that. If you have an exchange aware backup solution capable of doing brick level backups then you can restore down to the individual piece of mail. If you dont you can use exmerge (not for the items already gone but to restore in the future) which will backup individual mailboxes to a .pst file and then you can restore from within outlook.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.