You must assign an extension to the attendant console, if you want the attendant to use TTI.
TTI port translations are the same for both digital telephones and attendant consoles. To merge a digital TTI voice port and an attendant console, you must:
Administer the attendant console as an X port.
Plug a digital telephone into the jack that is assigned to the attendant console.
Enter the TTI merge digit sequence at the digital telephone.
Unplug the digital telephone.
Plug the attendant console into the jack.
ADDITIONAL INFORMATION:
You can separate an attendant console from its port only through administration. A TTI separate request from an attendant console gives the user intercept treatment.
Note:
If you want to use TTI, you must assign a call appearance (call-appr) to the first button position. TTI needs the button on the first call appearance to get dial tone.