Snom M10 KLE User Manual page 35

Example - picking up a held shared call:
1 Alice is on a call
2 Alice presses HOLD to put
the call on hold
3 Alice shouts across the room,
"Bob, can you pick up line 2?"
4 Bob presses L2 to pick up the
call
The call is now on Bob's handset
Alice's handset
35
Bob's handset