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How to: OSMO for Android

Overview of OSMO for Android

The OSMO (Openscape Mobile) on the Android allows you to access the chorus features using your phone on a wireless connection. You can make and receive calls, access voicemail and change settings such as the preferred device.

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Registering your Chorus account

Before installing the App you will first need to register your Chorus account to create a password. This is not the same as the voicemail password.

Note: if you are a soft phone user, you will have already done this and can use the same log in details in OSMO.

To register your Chorus account:

1. Go to

2. Enter a password, taking care to follow the guidance on passwords displayed on the page.

3. Click Submit.

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Installing the Android OSMO app 

Please note the version of OpenScape Mobile in the Play store is not completely compatible with our system. It will however allow you to make and receive calls from your mobile device.

1. Download OpenScape Mobile from Google Play.

2. Tap on the OpenScape Mobile download installed notification (or open from the Home screen or Apps/Widgets tab)

3. Read and accept both EULA and emergency call disclaimers.

4. Enter your Chorus credentials:

a. Subscriber: your SSO ID plus '-sip' (e.g. 'ouit1234-sip').

b. Server Address:

c. Password: The Chorus password you set when registering your Chorus account (see Registering your Chorus account).

5. Then tap Save.As part of the incompatability on this version you will see a message saying "Login failure" please ignore this message as it will actually have registered. OpenScape Mobile is NOW on and you will be able to dial and receive but none of the other features will be available.


If you are using the the original Openscape Mobile App it is installed and configured exactly as above but you should not see the "Login Failure" message. You will be able to use the full suite of features which are detailed in the following instructions:



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Screen Overview

OSMO android widget

Mode of operation

Mode of operation is indicated by the status LED in the notification bar:

green circle  Wi-Fi mode. Calls made over Wi-Fi.

green hollow circle  Callback Mode. Server calls back on your mobile phone. Your mobile number is not exposed to the caller.

red whole circle  Registration has failed or the servers are not reachable.

To switch on Wi-Fi, tap the On icon on the widget.

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Answering a call

answering a call icon

Referring to the icons above from left to right:

  • Tap Desk to send the call to your desk phone.
  • Tap Voicemail to send the call to voicemail.
  • Tap Cell to send call to mobile phone.

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Routing calls between Wi-Fi and mobile

1. Tap Settings on the widget.

2. Switch on Route Calls To Cell to route calls to mobile when not reachable over Wi-Fi.

OSMO route calls to cell option to send calls to mobile

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Making a personal call

In order to ensure that personal calls are routed via your carrier rather than the university, ensure that the 'Enable Native Dialpad' option is unticked:

enable native dialpad option

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Using contacts or journals List

1. Tap Journal; or Contacts then All Contacts or Find Contact to search for a contact.

search the directory from the contacts menu

2. Select the contact and tap Call/Handset icon.

3. Select which device to use, and tap Handset icon.

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During a call

call options during a call

  • To use a Bluetooth Device, tap the airplay iconAirplay icon.
  • To transfer or hold a call tap More, then tap Transfer or Hold. (Start Bluetooth allows connection to the headset.)
  • To move a call from one device to another, tap Move and select Wi-Fi Phone, Cell Phone, Desk Phone, other targets (remembers the last used target) or More (to select from other choices).

call target options

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Retrieving voicemail

1. Tap the Voicemail icon.  

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Managing online presence (visibility)

1. Tap Presence.

2. Select the status you want others to see such as ‘Available’, ‘Be Right Back’ or ‘In a meeting’.

online presence menu

3. You can also add timezone details, if required.

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Selecting preferred device

1. Tap Devices.

preferred devices menu

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Initiating an ad-hoc conference

For more information on ad-hoc conferences, see Overview of teleconferencing

1. Tap Conferences then Start Ad Hoc Conference.

conference menu

2. Select participants and tap Start Conference.

selecting conference participants from the contacts menu

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Join/start a conference

1. To start a conference, tap Conference and select required entry.

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Written by IT Services. Latest revision 15 April 2020