"not found" error when redialing from history

[rilliam]

When I select an INBOUND number in my history to redial, it results in a busy tone and an error on the LCD saying, "not found".

I have implemented a few asterisks systems using the t22p, t26p, and t28p phones and they all behave this way.

Is there something I am doing wrong or a way to fix this problem?

Thanks,

[rilliam]

Nobody?

[Yealink Support]

This is a message from your Asterisks server meaning the number you dial is unreachable.

[rilliam]

Hi unfortunately the phone never talks to the asterisk server. I have attached a picture of the problem as well.

I have been using yealink phones for awhile and they all exhibit this problem. Is it a dial plan problem? Does the dial plan need to be set on the phone? I notice there is a + in front of the dialed number, does this need to be changed somewhere? How?

https://imgur.com/a/2dPq4SY