Refer to the exhibit.
IP phone 1 has the MAC address 11111.1111.1111, while IP phone 2 has the MAC address 2222.2222.2222
The first two incoming calls were answered by IP phone 1, while the third incoming call was answered by IP phone 2
What will happen to the fourth incoming call?
In shared line configuration phone share the same line so it is possible for any phone to answer the call.