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Bluetooth Headset Desk Phone Connection using the MDA 200

MDA200 and BT300 in Multipoint Setup

Multipoint Configuration

We’ve described in previous articles how the MDA 200 can allow you to switch your USB headset connection between a PC softphone and a desk phone. In this configuration, the Plantronics Voyager Bluetooth headset combined with the BT300 Bluetooth stub allows the headset to be linked to both the desk phone and the PC, while the multipoint capabilities of the Voyager headset allow it to also pair with your mobile phone.  The HL10 handset lifter connected from the MDA to the phone allows desk phone calls to be initiated and ended remotely without the need to manually pick up the handset.

Active Phone Call

Active Phone Call

The basic principle is illustrated to the left. A call may be initiated by selecting the Call Control (CC) button on the headset. This signals the MDA to lift the phone handset thus initiating or answering a call.  Calls can also be managed by selecting the PC or Phone buttons on the MDA. Selecting the phone button will cause the handset to lift as well as Linking the Bluetooth stub to the headset.

Here are some operational tips we noticed in testing this configuration:

MDA connected only to the Desk Phone (not the PC)

  • Both the PC and Phone LEDs will be off initially. Selecting the CC on the headset will activate the Link and pick up the phone handset
  • If the phone rings, the user is alerted by beeps in the headset, and the MDA phone LED will flash. You can answer  the call using the CC button or by selecting the MDA phone switch.
  • During an active call, selecting the headset CC button or the MDA phone button will end the call and hang up the phone handset.

MDA connected to both Desk Phone and PC

  • Initially the PC LED will be illuminated
  • Selecting the CC button on the headset will NOT activate the phone. It is signaling the PC softphone at this stage. This has relevance depending on the Softphone you are using, and whether you have the Plantronics control software loaded on your computer. (This topic is discussed in the MDA 200 user manual.
  • If the phone rings, the user is alerted and may engage the call using either the CC button or the MDA phone button.
  • The MDA reverts to PC mode when the desk phone call is ended.

The following table provides the LED indicators for various operational modes.


LED State Indication
 PC-Gr Solid green Connected to PC audio (default condition)
 PC-Gr Flashing green Incoming PC call
 PC-Yel Flashing yellow Active PC audio on hold
 Phn-Gr Flashing green Incoming desk phone call
 Phn-Gr Solid green Desk phone audio connected
 Phn-Yel Flashing yellow Active phone audio on hold
 PC_Phn-Gr Both icons flashing green for 2 seconds MDA200 is booting up – once complete both LEDs will be off if no headset is connected. If a headset is connected the PC icon will remain lit solid green.
 PC-Red Solid red Firmware update in process – follow firmware update instructions to clear once complete.
 Phn-Red Solid red Over current condition – using HL10 without power supply. Unplug MDA200, add power adapter, re-plug MDA200 to PC.
 Phn-Red Flashing red Headset fault – replace headset and power cycle the MDA200.

There are more setup and operational details in the MDA 200 user manual which can be found at the bottom of the MDA 200 product description page at this link.

For additional information on configuring the MDA 200 with the HL10, the BT300 and the Voyager Legend Bluetooth headset or Voyager Legend UC, please contact the Comfort Canada Calgary office at calgary@comfortcanada.com

Are Plantronics CS540 and Savi W440/W740 Earpieces Compatible

In one of our previous Blogs we showed how the CS540 headset is compatible with Savi wireless products such as the Savi W740, and by inference, the Savi W440. Both use the same communication language (DECT) and provide the same clarity and similar range for voice communications. You can subscriber a CS540 earpiece to a Savi W440 USB dongle or Savi W740 base, and you can conference earpieces from both systems on a single call.

However, there are some differences in the earpieces and batteries for the CS540 vs Savi W440/W740 that are clarified in the following table.

CS540 Savi 440/740
Frequency DECT DECT
Subscribe to alternate base Yes Yes
Colour Black boom Silver boom
Hot Swappable Battery No The battery can be switched in mid-call without getting disconnected as long as you reattach the new battery within five minutes.
Earpiece Order Code 86179-01 WH500 – 83356-01

CS540 Ear Piece

CS540 Ear Piece

Savi W440/W740 Ear Piece

Savi W440/W740 Ear Piece

Battery Order Code 86180-01 (Battery may be labeled “P/N 84479-01” but correct Plantronics part number is 86180-01) 84598-01

CS540 Battery

CS540 Battery

Savi W440/W740 Battery

Savi W440/W740 Battery

Battery Type Li-Ion Polymer Battery Hot Swappable
Hot Swap Battery No Yes
Interchangeability Not interchangeable with other batteries including the CS55 battery (this one is smaller and is only for CS540). Not compatible with Plantronics Savi W440, W740 or W745 Specific to Savi W440, W740 and W745
Charging source CS540 charging cradle Can be charged using the standard Savi cradle, Deluxe USB cable or Deluxe Charging Cradle
Charge time Full charge takes 3 hours (charge approximately 20 minutes prior to the first use) 3 hours
Talk Time 7 hours 7 hours
Standby Time 50 hours
Storage time Up to 75 days of storage time when removed from the headset.

Usage Tips:

The CS540 is for dedicated desk phone connectivity and cannot be connected to a computer.

The Savi W440 uses a USB dongle to connect to a PC for voice applications, and can also be connected to a desk phone using a MDA 200 USB switch.

The Savi W740 is a multi-platform wireless headset system that connects to a PC, desk phone and a Bluetooth PDA device.