• Increase volume of call: press VOLUME+ key .
• Decrease volume of call: press VOLUME- key
• Mute and unmute microphone: press MUTE key .
• Call waiting.
◦ Press CALL key to accept incoming and simultaneously terminate active call .
◦ Press CALL key twice to reject the incoming call .
◦ Press CALL key for 2 seconds to put the active call on hold and accept the second call .
◦ Switch active and held call: Press CALL key for 2 seconds .
Swap call between headset and handset
Note: If the call is muted, it will be unmuted, if the call is on hold, it will be retrieved.
• Headset picking up from handset: Press the CALL key on the headset to continue the call on the
headset .
• Handset picking up call from headset: Press the CALL key or the SPEAKERPHONE key on the hand-
set to continue the call on the handset's receiver or speakerphone, respectively.
LED indications
Color LED indication Status
Green Short flash followed by long flash Power up
Green Long flash followed by short flash Power down
Blue Flashing fast Registration, ongoing
Blue Long flash Registration completed
Red Long flash Registration failed
None Deregistered
Blue Blinking slowly Idle, connected
Red Blinking slowly Idle, out of range
Green Flashing fast Incoming call
Green Flashing fast
2nd incoming call, call active, silent
mode on
Green
Single short flash. Notification of call
via audio in HS
2nd incoming call, call active, silent
mode o
Green Single short flash In call
Red Short flash Low battery
Red Steady on Battery charging, low bat
Green Long flash Battery charging
Green Steady on Battery charging, full
Purple Steady on Menu
For further information, see wiki.snom.com/A190.
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13509 Berlin,Germany
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