Need to reset the outgoing message greeting, forgot how??

Depending on your wireless service provider, the method for changing your voice mail greeting or voice mail password might differ. You should be able to access the options for changing your voice mail greeting or voice mail password when you check your voice mail. For more information, contact your wireless service provider.

Night greeting usually resides (and managed) in Mailbox 990 (Message #2). You'll need the passcode for that mailbox or your dealer will need to reset it.

With the phone in standby mode, press and hold the [greeting] key. You will hear the announcement "Record greeting" and a confirmation tone. "--" flashes on the message counter.
Start record your message. You have thirty seconds, and the message counter counts down.
When finished, press [greeting]. You'll hear a confirmation tone, and then your greeting plays back.

The above is from the "Recording a personal outgoing message" section of the manual (page 36 in my copy). If you need a manual, you can download one here.

Hi,
You will need to remove the old message. There SHOULD be prompts. IF NOT try going to a very quiet room and hit record but do not say or make noise and this will record silence over the old and new message. Then attempt to retry.
ALSO - look for a 'reset' button and remove all batteries if you have power outage back up batteries.
Unplug the phone - and try again.
Here are the instructions from the manual:
To Change Your Personal Greeting:
1. Press the Check Voicemail key or press the Feature button, then 981
2. Enter your password
3. Press the ADMIN softkey
4. Press the GREET softkey
5. Press the REC softkey
6. Press the PRIME softkey
7. Press the YES softkey
8. At the tone, record your new greeting, press the OK softkey to end your recording and then the OK softkey again to accept the new recording

Best of it
Gary @ Fix Ya

Hi,
Recording a Personal Greeting
Your answering system comes with a pre-recorded outgoing message or greeting that plays when you receive a
call: "Hello, no one is available to take your call. Please leave a message after the tone." You can record your own
personal outgoing greeting. Your recorded greeting must be between two seconds and thirty seconds long.
Press /mute. The system announces the number of new and old messages, then starts to play the
messages unless it has no messages.
Press 5 to stop the announcements or message playback. You will hear intermittent beeps indicating that the
system is in the command waiting mode.
Press 8 to start the recording. The system announces, "Record greeting." Begin recording after the
announcement.
When you finish recording, press 8 again or press 5. You will hear a confirmation tone, and your recorded
greeting plays back for you.


Selecting a Greeting
Once you have recorded a personal greeting, the phone automatically switches to your personal greeting. You can
also switch back and forth between the pre-recorded greeting and your own greeting at any time.
Press /mute. The system announces the number of new and old messages, then starts to play the
messages unless it has no messages.
Press 5 to stop the announcements or message playback. You will hear intermittent beeps indicating that the
system is in the command waiting mode.
Press 6. The system plays the current greeting.


To keep this greeting: Do nothing..


To switch to the other greeting: Press 6 while the system is playing the current greeting.
Each time you press 6, the system switches between the pre-recorded and the personal greeting. The last
greeting you hear is used as the current greeting.


Deleting Your Personal Greeting
You can delete your personal greeting from the base. You cannot delete the pre-recorded greeting.
Press /mute. The system announces the number of new and old messages, then starts to play the
messages unless it has no messages.
Press 5 to stop the announcements or message playback. You will hear intermittent beeps indicating that the
system is in the command waiting mode.
Press 6. The system plays the current greeting. Switch to your personal greeting if necessary. (See the previous
section to switch the greeting.)
While the personal greeting is playing, press 4.
The system announces "Greeting has been deleted," and switches back to the pre-recorded greeting.

Recording a Personal Greeting
Your answering system comes with a pre-recorded outgoing message or greeting that plays when you receive a
call: “Hello, no one is available to take your call. Please leave a message after the tone.” You can record your own
personal outgoing greeting. Your recorded greeting must be between two seconds and thirty seconds long.
Press /mute. The system announces the number of new and old messages, then starts to play the
messages unless it has no messages.
Press 5 to stop the announcements or message playback. You will hear intermittent beeps indicating that the
system is in the command waiting mode.
Press 8 to start the recording. The system announces, “Record greeting.” Begin recording after the
announcement.
When you finish recording, press 8 again or press 5. You will hear a confirmation tone, and your recorded
greeting plays back for you.
Selecting a Greeting
Once you have recorded a personal greeting, the phone automatically switches to your personal greeting. You can
also switch back and forth between the pre-recorded greeting and your own greeting at any time.
Press /mute. The system announces the number of new and old messages, then starts to play the
messages unless it has no messages.
Press 5 to stop the announcements or message playback. You will hear intermittent beeps indicating that the
system is in the command waiting mode.
Press 6. The system plays the current greeting.
To keep this greeting: Do nothing..
To switch to the other greeting: Press 6 while the system is playing the current greeting.
Each time you press 6, the system switches between the pre-recorded and the personal greeting. The last
greeting you hear is used as the current greeting.
Deleting Your Personal Greeting
You can delete your personal greeting from the base. You cannot delete the pre-recorded greeting.
Press /mute. The system announces the number of new and old messages, then starts to play the
messages unless it has no messages.
Press 5 to stop the announcements or message playback. You will hear intermittent beeps indicating that the
system is in the command waiting mode.
Press 6. The system plays the current greeting. Switch to your personal greeting if necessary. (See the previous
section to switch the greeting.)
While the personal greeting is playing, press 4.
The system announces “Greeting has been deleted,” and switches back to the pre-recorded greeting.

Cheers!

Recording a Personal Greeting
Your answering system comes with a pre-recorded outgoing message or greeting that plays when you receive a call: “Hello, no one is available to take your call. Please leave a message after the tone.”
You can record your own personal outgoing greeting. Your recorded greeting must be between two seconds and thirty seconds long.

1. Press /mute. The system announces the number of new and old messages, then starts to play themessages unless it has no messages.
2. Press 5 to stop the announcements or message playback. You will hear intermittent beeps indicating that thesystem is in the command waiting mode.
3. Press 8 to start the recording. The system announces, “Record greeting.” Begin recording after the announcement.
4. When you finish recording, press 8 again or press 5. You will hear a confirmation tone, and your recordedgreeting plays back for you.
   

Selecting a Greeting
Once you have recorded a personal greeting, the phone automatically switches to your personal greeting. You can also switch back and forth between the pre-recorded greeting and your own greeting at any time.

1. Press the /mute. The system announces the number of new and old messages, then starts to play the messages unless it has no messages.
2. Press 5 to stop the announcements or message playback. You will hear intermittent beeps indicating that the system is in the command waiting mode.
3. Press 6. The system plays the current greeting.

There are two models - The TRU8885 and the TRU8885-2 -
For the TRU8885 the manual PDF form >>>Click Here<<<
The solution is on page 24 + 57 It starts on Pg 24 as...

Record Greeting allows you to record a personal outgoing message (greeting) which
the answering system automatically plays when you receive a call.

1) Enter the Answring Setup menu, and then the
Record Greeting sub-menu (see "Entering the
Menu" on page 16). To record greeting press
[STA RT] appears.

2) Press the START soft key. You will hear “Record Greeting.“ The message counter
displays 30 and then begins to count down.

3) Position yourself near the base microphone and record your greeting.

4) When you are finished recording, press the STOP soft key. Your greeting will
playback for confirmation.

Selecting Your Greeting (Base only)

Select Greeting allows you to choose between the two outgoing messages, a prerecorded
message or your own greeting.

1) Enter the Answ. Setup menu, and then the
Select Greeting submenu (see "Entering the
Menu” on page 16). P lay back greetin g
appears, and the current outgoing message is
played. LCD is an example if you recorded your greeting.

2) Once you have recorded a personal greeting, press the CHANGE soft key to
choose the greeting. The selected outgoing message is played. Each time you
press the CHANGE soft key, the phone switches the outgoing message between
the prerecorded and the personal outgoing message.

There is more on the PDF - Just ask if you need more

For the TRU8885-2 is essentially the same. The manual PDF form >>>Click Here<<<

If we need to dig further, just ask! :) We are just a mouse click away!
Thanks
Len

here you go...

Recording your greeting
message
You can record your own greeting
message (max. 2 minutes and 30
seconds). If you do not record a
greeting message, a prerecorded
greeting message is used.
1 {MENU}
2 {V}/{^}: “Answering device” i
{OK}
3 {V}/{^}: “Record greeting” i
{OK}
4 After the handset beeps, speak
clearly about 20 cm (8 inches) away
from the microphone.
5 To stop recording, press {OK}.
6 {OFF}


If this helps you solve it, plz rate this fixya. Thank you kindly.

Press and hold down the "greeting A" button. You will be instructed as to when to start your message. When you are done recording, release the button. To hear your recorded greeting, press the "greeting A" button again.