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3CX Phone System SC 4 professional maintenance
Maintenance requires correct end-user details otherwise it will not be activated.
A maintenance package entitles you to free updates and free downloads of any new versions that are released.
After the first year, you must purchase maintenance WITHIN 30 days of the maintenance expiry date to continue receiving these benefits.
If you do not renew your maintenance and wish to upgrade to the latest version once a new version is released, you will have to buy a version upgrade.