Motorola MOTOROKR EQ5 Quick Start Manual page 16

When there's a second incoming call, the main indicator
light flashes quickly in blue on your speaker and you hear
ringing.
Tap—answer second incoming call /
end active call (and resume call on hold) /
resume call on hold (when remote caller hangs up)
Press and hold (either button)—
reject second incoming call
during calls
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