Both MDA and Sequential Registration are supported if both Avaya Expert Client and a Device Adapter UNIStim endpoint are used as UC endpoints in a Call Center Elite environment. Ensure that the station definition used for these endpoints is a CS1K_IP station. The Device Adapter UNIStim endpoints cannot assign feature list settings to feature key buttons and do not have a Features list.

The behavior and limitations of MDA and Sequential Registration are the same as those for other Avaya Aura® SIP devices.

Only Sequential Registration is supported if both Avaya Expert Client and a Device Adapter UNIStim endpoint are used as CC endpoints in a Call Center Elite environment. Ensure that the station definition used for these endpoints is a CS1K_IPCC station. The Device Adapter UNIStim endpoints cannot assign feature list settings to feature key buttons and do not have a Features list.

The behavior and limitations of Sequential Registration are the same as those for other Avaya Aura® SIP devices.

When you use both Avaya Expert Client and a Device Adapter UNIStim endpoint in a Call Center Elite environment, only one of these endpoints can be SIP registered at one time. Therefore, the CTI application will control either Avaya Expert Client or the UNIStim endpoint.

The endpoint supports MDA only when it is not registered as a CC endpoint. Device Adapter supports both digital and UNIStim endpoints as CTI controlled endpoints.

CTI controlled UNIStim endpoints support both MDA and Sequential Registration. Therefore, with CTI control, Avaya Expert Client and UNIStim endpoint that are used as UC endpoints can coexist. However, the CTI controller identifies the most recently registered endpoint to perform operations such as answer a call, release a call, and transfer a call. Even with MDA, the CTI controller controls only the most recently registered endpoint, even though both the endpoints are capable of carrying out UC functions.

Device Adapter does not support MDA and Sequential Registration for a digital endpoint. However, you can use the Sequential Registration configuration to provide fail-over support for digital endpoints. For more information, see Sequential Registration fail-over support for analog and digital endpoints.