User guide

showing the activation code beside it. Activation codes may be time-limited. If this is the case, an expiry date

will be displayed, or a warning that the feature has already expired. Expired activation codes remain listed, but

the corresponding feature will not be activated.

If the activation code is not valid, you will be prompted to re-enter it.

4. It is recommended that you record the activation code in case you need to re-enter it in the future.

5. Successful ISDN gateway or feature activation has immediate effect and will persist even if the unit is restarted