When there is an operator message like "this number is not in service", NBX phone turns to extension and Audio codes turn to busy tone.

This is a phone company recording and is normal for a call that can't complete. It has nothing to do with the phone system.

The phones aren't on the system. You have to make sure to turn on "Auto Discover Telephones" under the system settings, system configuration tab within "tab to it" (on 5.0 and older software) and System wide settings, auto discovery with newer software. If the phones are plugged into the same network as the phone system, the phones will automatically come up with extensions.

This is an AT&T problem. Good luck getting them to change the DTMF settings on your U-Verse box!

it really depends on your phone system

but the possibilities are:

1) "INTERCOM"
2) *710
3a) 0 to deavtivate
3b) 5 to set to busy/no answer
4) put the number you want to fwd to then "#" *confirmation tone*

or

1) "INTERCOM"
2) 710
3a) 0 to deavtivate
3b) 5 to set to busy/no answer
4) put the extension number you want to fwd to *confirmation tone* (extension number only)

With IP Office, it doesn

If the extension is already in use on the system you wont be able to assign it to another phone. You can change the conflicting Ext. to something else (not in use) and then use the one you wanted. There are also specific ext. ranges that you have to abide by.

See if this works for you.

Remote Operation
When you are away from home, you can operate your answering system with any
touch-tone telephone.Use this function to check for recorded messages, to play or
delete messages, even record a new greeting message.
1) Call your telephone number.
2) During the greeting message, press 0 and enter your PIN code.
3) The answering system announces the current time and the number of messages
stored in memory. Then you hear "To play incoming message, press zero two.
For help, press one zero."
4) You may continue to listen to the voice prompts, or you may select a command
from the following chart:

Command Function
0 then 1 Repeat a Message
0 then 2 Play Incoming Messages
0 then 3 Skip a Message
0 then 4 Delete a Message
0 then 5 Stop Operation
0 then 6 Answering System On
0 then 7 Memo Record/Stop*
0 then 8 Greeting Message Record/Stop*
0 then 9 Answering System Off
1 then 0 Voice Prompts

If you forgot to turn on answering system the directions for that are here:

Turn on the Answering System Remotely
If you have forgotten to turn on your answering system, you can turn it on remotely
from any touch-tone telephone.
1) Call your telephone number.
2) Wait ten rings until the system answers. You hear intermittent beeps.
3) Press 0 and then enter your PIN code. The answering system announces the
number of messages stored in memory. You hear "To play incoming message,
press zero two. For help, press one zero."
4) Press 0 then 6 to turn the answering system On. You hear the outgoing message
and a confirmation tone.
5) Hang up the phone; subsequent calls will be answered by the system.

Are you trying to forward calls in circular from 1 extension to the next. Like 101 to 102 back to 101. If not I would purge the database and start over. Export user data so you can see the Mac address of each phone and it will be easy to reconfigure the extensions. Do not import the Data. Start from scratch.

Try this...
See if this works for you.

Remote Operation
When you are away from home, you can operate your answering system with any
touch-tone telephone.Use this function to check for recorded messages, to play or
delete messages, even record a new greeting message.
1) Call your telephone number.
2) During the greeting message, press 0 and enter your PIN code.
3) The answering system announces the current time and the number of messages
stored in memory. Then you hear "To play incoming message, press zero two.
For help, press one zero."
4) You may continue to listen to the voice prompts, or you may select a command
from the following chart:

Command Function
0 then 1 Repeat a Message
0 then 2 Play Incoming Messages
0 then 3 Skip a Message
0 then 4 Delete a Message
0 then 5 Stop Operation
0 then 6 Answering System On
0 then 7 Memo Record/Stop*
0 then 8 Greeting Message Record/Stop*
0 then 9 Answering System Off
1 then 0 Voice Prompts

If you forgot to turn on answering system the directions for that are here:

Turn on the Answering System Remotely
If you have forgotten to turn on your answering system, you can turn it on remotely
from any touch-tone telephone.
1) Call your telephone number.
2) Wait ten rings until the system answers. You hear intermittent beeps.
3) Press 0 and then enter your PIN code. The answering system announces the
number of messages stored in memory. You hear "To play incoming message,
press zero two. For help, press one zero."
4) Press 0 then 6 to turn the answering system On. You hear the outgoing message
and a confirmation tone.
5) Hang up the phone; subsequent calls will be answered by the system.

Probably not, but the voice mail extension is still a dialable number. Try 500 or 165 or asking whoever installed it what the extension is.

It will prompt you the same as if you had pressed the MESSAGE button, only there will not be any new messages. You just have to play the OLD messages and you'll hear them.


Carl