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MaxUC is a flexible desktop phone program for making and taking calls.


Your RingSquared phone service can be used to make or receive calls from your desk phone, your PC or Mac, and your mobile devices.

For this to work on your desktop, you need to install the Accession Communicator for Desktop software on your PC or Mac.

MaxUC Desktop works on PCs running Windows 7, 8 or 10. It also runs on Macs that have OS X 10.7 or later versions.

You can use your computer’s built-in microphone and speakers, but you will have much better audio quality if you use a headset. Accession Communicator works with most common headsets, including Bluetooth. It will even work with the answer/reject call button on some headsets.


Download Accession Communicator for Desktop from the CommPortal. When prompted, save the file. Find the file in your downloads folder, open it, and follow the on-screen instructions to install the software.


MaxUC for Desktop is like having your desk phone on your computer. You can make and receive calls, hold calls, transfer calls, and make three-way calls.

You can also use MaxUC to send instant messages, transfer files, and send Presence information to other people in your corporate directory who are using MaxUC (on any device).

MaxUC uses the Wi-Fi, broadband, or mobile data services available and connected to your computer.


Making a call is as easy as entering the number on the keypad or clicking on a contact’s call button. If your contact has more than one number, you can choose which number to call from the drop-down list.

If the person you are calling has caller ID, they will see your individual Company phone number.

While in an existing call, you can make a second call using the main client rather than the active call window. This automatically puts the first call on hold. When the second call is active, you can click the Transfer call icon that will show the held call as a transfer option.


When someone calls your Company number, you will see a pop-up window appear on your computer screen and hear a ringing tone through your speakers or headset. The pop-up shows the number of the person calling you. If that person’s details are already in your contacts list, the pop-up displays the caller’s name.

Depending on the other services you have from Company, you may see the incoming call on your desk phone, on your mobile phone, or on a tablet device. You can answer the call on whichever device is most convenient for you.


While a call is in progress you can use the call window to:

  • Add a participant
  • Transfer the call
  • Perform a CRM look-up
  • Put the call on hold
  • Send video
  • Mute your microphone
  • Adjust the volume
  • Access the keypad
  • Switch to another call
  • Record the call
  • Merge calls
  • End the call
  • Uplift the call to an Accession Meeting. 14. Send a chat message to the caller


If the person you are talking to is also using MaxUC on the same network, you can upgrade your call to video at any time. Click on the Video icon to send your video. The other person will receive a prompt inviting them to switch on their video too. Click on the Video icon at any time to turn off your video feed.


Use the Call Transfer icon to send any call to another number. A menu will pop-up allowing you to select a contact, or you can type in a completely new number to transfer the call to. You can also transfer the call to another of your devices that has MaxUC installed, without having to hang up.


If you have MaxUC with Instant Messaging, click on a contact’s chat icon to send them an instant message. From within the chat window you can send files, view your chat history with the contact, call the contact, and add one or more participants to the conversation.


If the caller is in your Contacts list, you can reject a call and send the caller an instant message explaining why you can’t take the call. Click on the drop-down list next to Reject and select one of the system messages, or click Custom Message to type your own message.


Let others know whether you are available or busy by setting your presence to:

  • Online
  • Busy
  • Your Presence information automatically shows when you are Away
  • On the Phone
  • In a Meeting (this references the information in your Outlook calendar)


You can tell MaxUC how to handle your incoming calls. Click on the Presence selector, expand the Available option and choose between:

  • If Do Not Disturb is selected, callers hear a recorded voice announcement saying that you are unavailable and are then connected to your voicemail. None of your devices will ring until you turn off Do Not Disturb, so be sure to use it carefully
  • You can select Forwarding to forward all incoming calls to another number. You are then prompted to enter the number you want to forward calls to.

Note that when you change your Presence or Call Manager settings, the change applies on all of your AMaxUC devices. So if you step away from your computer and forget to update your status, you can change your status using the MaxUC app on your mobile phone instead.

If you have any additional questions, please contact the RingSquared support team or call 800-427-Ring.

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