HOW TO RESTORE VOICEMAL AFTERPOWER OUTAGE AVYA 18D CORDED

The only way to restore the setting is through a Backup & Restore card plugged into the system. Also check the system batteries. This will keep power to system during an outage.

If you have a Backup & Restore card you can manually restore the system. If not you will have to restore everything by manually including voicemail greetings and automated attendants.

Call in a pro. it sounds like you lost all your programming with that power outage.
Depending on your processor type, you may have to re-program teh entire system, or just restore a backup....

IS the system time/date correct?
Chances are that the voicemail is picing up and "Transferring call" to the operator (Ext 10)
The system will need to be re-programmed from scratch.

Changing time on a Partner.

That link will help you.

At the phone: No

This phone is attached to a Partner panel somewhere in your building most likely. At that panel there is either a slot card or a carrier box with several cards in it. One of them is the processor card, on that card at the front should be an area at the bottom w/ a "+" plus sign on it, move the black (usually that color) slide and there will be a carrier for 2 AA batteries (or AAA), replace those and the info should be saved. Alternatively some of these system have a PCMCIA memory card that you can use to back them up and then restore them if something goes wrong later. If you find the main phone on your system (usually 34 button) it may even tell you the batteries need replaced. When we install we also highly recommend hooking the main phone system to an APC backup, even something as small as a 500-600 series just to both protect your investment and in small outages eliminate the worry of this problem.

Hope this helps you.

Avaya Partner 18D Button phone:
Two possible solutions,
First, could have a bad handset cord.
Second, I have come across a bad handset connection ports on the Euro style phones. The handset cord and the port just don't mesh well or the port itself is bad.

That one doesn't sound too good.
You could perform a reset through programming which should clear the scratch pad.
Thats done by entering programming on either ext. 10 or 11
Press feature 00 then the left hand intercom twice.
Next enter # 728, the display should say reset save all then reboot the system.If the problem is still there, then the processor is malfunctioning and will need to be replaced.

the system battery is there for example a power outage, if a power outage occures then the battery will keep the phone from resetting and loosing all of your phone numbers. so depending on what kind of battery it needs then you might want to call the manufacture.

http://dstech1.com/changing-time-on-a-partner/

Here you go.