Motorola S605 Quick Start Manual page 15

When there's a second incoming call, the status indicator
light flashes quickly in blue on your stereo clip and you
hear ringing.
14
during calls
Press --
1) answer second
incoming call
2) end active call
(resume call on hold)
3) resume call on hold
(when remote caller
hangs up)
Press and hold -- reject
secon incoming call