Features and Configuration of SIP Devices

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Supported SIP features

OpenScape Business provides its extended, rich feature set with OpenStage HFA phones. Many features are also available for standard SIP phones. The features which have been released for OpenStage SIP phones are:

  • CLIP (Display the call number or name from caller)
  • Consultation (Set the call on hold, phone goes into dial state)
  • Call transfer (Call transfer attended, semi-attended and blind)
  • Call Forwarding (Call Forwarding Unconditional (CFU), Call Forwarding on Busy (CFB) and Call Forwarding on No Response (CFNR) are configurable at SIP phones)
  • Conference (Three-party conference located on the phone, passive member of system conferences)
  • MWI (Notification if call or message is recorded)
  • DND (Call will be rejected)
  • Call waiting (A second call is signaled)
  • Group and Basic / Executive MULAP calls (No group call numbers are displayed, only original caller number)
  • DTMF (Manage voicemail boxes or auto attendant)
  • Distinctive ringing (Different ringtones for internal, external and recall)
  • 3rd-party call control (Useable with 3PCC applications e.g. myPortal or Outlook and OpenScape Business controlled conference, available with V1 Step 2)
  • Call deflect (Forward ringing call to another destination)
  • Call reject
  • Groups: The system Feature "group call pickup" activated by service code is supported from OpenScape Business V1R3.


  • Some other System features that are operated via service codes e.g. door opener, speed dialing, will be supported from OpenScape Business V1R3.1.
  • No MULAP keys are supported for SIP phones. 'Call completed elsewhere' for caller list is supported with the latest OpenStage SIP and Cordeless IP versions.
  • SIP terminals cannot be used for OpenScape Business contact center agent.
  • An internal SIP phone will hear MoH only, no ringtone, when it is supervised transferred by a second internal party.
  • Device specific features, which are not supported by OpenScape Business, shall be disabled in the device as described in the SIP device configuration guide.
  • DLI is used used for SW-Updates of OpenStage phones, settings of additional parameters like "Activate second LAN interface", and providing some additional SIP parameters.

SIP Endpoint Configuration within OpenScape Business

Instructions how to administrate OpenScape Business for SIP devices can be found here :

Instruction for configuration of the feature SIP@home can be found within the following document.

The Yealink SW version ( mentioned within the document contains important fixes for the use of this feature in combination with OpenScape Business.
Other SW versions than 31.72.x.x, including newer versions available on the Yealink download page, cannot be used!
The V7-Unify software is available here with kind permission of Yealink.
The functionality will be release by Yealink with V8 in the first quarter of 2015.

You may download this SW and use this SW only if you agree to the following terms:

  • SW is property of Yealink.
  • Your are not allowed to distribute and/or publish this SW as file without the permission of Yealink
  • Unify is not reliable for any problems of any kind, which may be caused by use of the SW.

If case that you do not agree to the terms you are not allowed to download and to use the SW.

SIP Endpoint Configuration for connection to OpenScape Business

Only the OpenStage SIP phones, OpenScape Desk Phone IP 35G, OpenScape Desk Phone IP 55G and Cordeless IP devices are officially released and supported. All other devices mentioned below have passed a connectivity test but may not support all possible OpenScape Business features.

Device configuration hints and differences in the feature set can be found in the following documents.

SIP Desk Phones

SIP Mobile Devices

SIP Soft Clients

SIP Gateways

Further Information