Scenario: Need a shared line across 2 phones. When first call comes, both lines should ring. Second call that comes while first is still connected, needs to ring only the unused phone. No callwaiting on the first phone that is on the first call. The behaviour should be consistent across both phones.
ephone-dn 1 dual-line
number 4000
no huntstop
hunstop channel
ephone-dn 2 dual-line
huntstop channel
preference 1
number 4000
ephone 1
button 1o1,2
ephone 2
button 1o1,2
