Phone features

Speakerphone

Headset support

Although Cisco performs limited internal testing of third-party headsets for use with the Cisco DX600 Series phones, Cisco does not certify or support products from headset (or handset) vendors.

Cisco recommends the use of good-quality headsets that are screened against unwanted radio frequency (RF) and audio frequency (AF) signals. Depending on the quality of the headsets and their proximity to other devices such as mobile phones and two-way radios, some audio noise or echo may still occur. An audible hum or buzz may be heard by either the remote party or by both you and the remote party. A range of outside sources can cause humming or buzzing sounds : for example, electric lights, electric motors, or large PC monitors.

Note In some cases, use of a local power cube or power injector may reduce or eliminate hum.

Because of the environmental and hardware inconsistencies in the locations where Cisco DX600 Series phones are deployed no single headset solution is optimal for all environments.

Cisco recommends that customers test headsets in their intended environment to determine performance before they make a purchasing decision and deploy on a large scale.

Audio quality

Beyond physical, mechanical, and technical performance, the audio portion of a headset must sound good to the user and to the party on the far end. Sound quality is subjective and Cisco cannot guarantee the performance of any headsets. However, a variety of headsets from leading headset manufacturers perform well with Cisco DX600 Series phones. For details, see the headset documentation.

3.5 mm headsets

You can plug a 3.5 mm headset into the headset port at the back of your phone.

Some headsets may have hardware incompatibilities with the phone, including pinout, microphone voltage, and device control functionality. Headsets with an incompatible or nonexistent microphone generally can be used with the phone built-in microphone for voice calls.

Wireless headset

Cisco DX600 Series phones support wireless headsets. Refer to the wireless headset documentation for information about using the wireless headset remote features. Also, check with your system administrator to be sure that your phone can use a wireless headset with the wireless headset remote hookswitch control feature.

Speakerphone

If the handset is in its cradle and is not lit, many actions that you take to dial a number or answer a call trigger speakerphone mode automatically.

Speakerphone is unavailable while headphones, or a headset with an incompatible microphone, are plugged in.

Cisco Desktop Collaboration Experience DX600 Series User Guide, Release 10.0(1)

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Cisco Systems CPDX650K9, A03D600GA2 manual Speakerphone, Headset support, Audio quality, Mm headsets, Wireless headset