The OND (Unified Number Service Device) Consultation feature allow a CSTA/ONS application to initiate a consultation call from an external OND (e.g. cell phone, home phone ...) without creating a second call leg to the OND device.
means that the OND device is not a registered subscriber device in the Lotus Sametime Unified Telephony.
In normal 3PCC (3rd party call control) consultation initiated via CSTA a new call leg to the consulting device is created.
OND Consultation is controlled entirely by the Lotus Sametime Unified Telephony, including alternating between the parties, reconnecting to the held party, music on hold.
Unified number applications such as Lotus Sametime 8.0enable users to choose a preferred voice device to use in inbound or outbound calls depending on user-specified rules. In some cases, the preferred device is outside the Lotus Sametime Unified Telephony switching domain, for example a device in the PSTN such as a cell phone or home phone.
Consider the following setup:
Subscriber A is provisioned on the Lotus Sametime Unified Telephony with CSTA and ONS
Device D is a cell phone owned by subscriber A
Devices B and C are the registered devices for subscribers B and C respectively.
Now assume that user A uses a click-to-dial CSTA application to call user B using device-D (OND). This is a standard ONS-IO Outbound call which uses 3PCC to set up the prompting call leg to device D on behalf of subscriber A. When device-D answers the prompting-call, the Lotus Sametime Unified Telephony extends the call to device B. User B sees the incoming call with user A's identity and answers the call.
The voice media for the call is now established between devices D and B (represented by the solid blue line in the figure below). Note that this call uses the services of subscriber A, even though the registered device for subscriber A (i.e. device A) is not involved in this call.
The resulting call is reflected as A|D <--> B.
With OND Consulting, when the CSTA unified number application initiates a consultation call, the Lotus Sametime Unified Telephony will not create a second call leg to the gateway. Instead, the 8K will put the existing unified number call (A|D<-->B) on hold and it will use the existing call leg to the OND device for the new consultation call. If subscriber A is provisioned for central Music on Hold (MOH), device B will be connected to the Media Server. Otherwise, device B is put in local hold.The figure below illustrates this behavior. Note that the consultation call A|D<-->C reuses the original call from the External OND device (represented by the solid blue line).
Parent topic: Unified Number Service