Bedienungsanleitung Plantronics Calisto 620 (Seite 17 von 19) (Englisch)

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Is there a visual indicator on the

Calisto 620 that shows volume

level?

No. There is no visual indication of volume level or volume

adjustments on the Calisto 620.

NOTE The Calisto 620 has a mid-range default volume setting. It

provides audible indications as you adjust the volume and when you

have reached the maximum or minimum volume level.

When I'm out of Calisto 620's

Bluetooth range while on an active

mobile phone call and then come

back into Calisto 620 Bluetooth

range, Calisto 620 does not auto-

reconnect to the mobile phone/call

(as it does with Voyager Pro UC).

This is by design.

When Bluetooth mobile headsets reconnect to a mobile phone

when in-range, call privacy is not compromised because other

people cannot hear the tiny speaker in the headset, but auto

connecting on a speakerphone can compromise a private

conversation if audio is played over its loud speaker

unexpectedly.

For this reason, it is necessary to reconnect manually to Calisto

620 from the mobile phone UI or to do a 2 second key press on

Calisto 620's Call Button to move the audio back to Calisto 620.

This is for user conversation confidentiality.

At times I hear some clicking/

popping sounds while on a call with

Calisto 620, is this distortion or

some sort of a product defect?

• Bluetooth devices, like Calisto 620, can be susceptible to

interference from Wi-Fi and/or other Bluetooth devices.

•

If you use Calisto 620 near a Wi-Fi access point or in a

Bluetooth-intensive environment, some interference can be

experienced in the form of audible artefacts through Calisto

620's speaker.

• If these artefacts are not present when using Calisto 620 away

from Wi-Fi and/or Bluetooth- intensive environments, then it is

very likely the artefacts are caused by radio/RF interference.

Music/media played on Calisto 620

does not sound as good when

streamed from the PC as it does

when streamed for my mobile or

smartphone. Why?

The Calisto 620 Bluetooth adapter supports wideband audio for

both speech and media/music, so the fidelity is not as high as

music/media streamed via A2DP from a mobile/smartphone side,

which is Hi-Fi.

What size room and how many

participants does Calisto 620

support for group conference calls?

There are 2 variables to consider for this answer, and both

involve the perceived audio quality experienced

by listeners on

the other (far) end of a Calisto 620 call:

The acoustic properties of the room: Not all rooms are created

equal and room acoustics can vary significantly.

The subjective opinion (or hearing abilities) of the far-end

listener(s) which can also vary significantly

With these variables considered, in general Calisto 620 can be

used in up to a 12x12 foot (3.7 x 3.7 metre) room with up to 6

participants.

Can the USB power cable be used

for audio-over-USB during calls?

Can Calisto 620 also function as a

corded USB device?

No. The USB cable is for power and Direct Firmware Updates

(DFU) only.

NOTE An accessory cable is available from Plantronics which

emulates the corded experience; through a single USB port on the

PC, this cable provides 1) a connection for the Minimax USB

Bluetooth adapter and 2) a power connection to the speakerphone.

(PN: 86215-02)

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