uaCSTA Handsets Yealink T4 Series | PBXs and Telephone Systems | Developer Solutions

Go Connect Server Information

Minimum Version Required:


Installation Notes:

Handsets are normally configured through provisioning.

Directory Download:



V80 or above is needed for Yealink handsets to support uaCSTA. Please contact us for more details or speak to your Yealink distributor.
Please enable on the handset via - Features-Remote Control and enable CSTA

Connection Information




Handsets are configured to point to the CTI server.

Firewall Requirements:

The port specified on the Go Connect Server

PBX Information


uaCSTA handset are normal SIP handsets that are configured to connect to a uaCSTA server over SIP also. The uaCSTA session is only used for monitor and control the main SIP accounts Line 1.

Driver Requirements:


Firmware Requirements (for new installations):

Models tested with are: T40P, T41P, T42G, T46G, T48G
Firmware 80,81,82,83 *84 is not supported. Example = .82 is the firmware version.
Testing completed with the Go Connect Server.

Other Requirements:

Handsets need to be configured individually (or via provisioning) to point to the uaCSTA server.

WAN Connectivity Trunk Monitoring Analog Phones Supported Agent Features Supported