The way that this is normally done is to add a second line appearance. You can create the this following way:
1. Enter the CLI.
2. Enter enable mode.
3. type "configure terminal"
4. Based on the number of simeltaneous calls you want the users to answer, enter the same number of ephone-dn's (see below for 4). The last ephone-dn needs to have "huntstop channel".
ephone-dn 120 dual-line
number 5001
description Main Line
name Main Line
huntstop channel
no huntstop
!
!
ephone-dn 121 dual-line
number 5001
description Main Line
name Main Line
preference 1
huntstop channel
no huntstop
!
!
ephone-dn 122 dual-line
number 5001
description Main Line
name Main Line
preference 2
huntstop channel
no huntstop
!
!
ephone-dn 123 dual-line
number 5001
description Main Line
name Main Line
preference 3
huntstop channel
5. For every phone you want to ring, enter the following (the ephone number is the number of the physical phone. The button is the actual button you want the number to appear on). Do this for each ephone you want the line to ring on.
ephone 13
button 2o120,121,122,123
6. type exit.
7. save your configuration.
8. In the auto attendant, point the number to the extension you added in the ephone-dn. In this example, 5001 was used, but you can use any number you want that meets your dial plan.
