uaCSTA Handsets Yealink | PBXs and Telephone Systems | Developer Solutions

Go Connect Server Information

Minimum Version Required:


Installation Notes:

Handsets are normally configured through provisioning.

Directory Download:



Please enable uaCSTA on the handset via - Features-Remote Control and enable CSTA.
Firmware .84 has some issues, Consult transfer fails, and an outbound call cancel fails.
DND is not supported via the client. You can control via the handset.

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. The uaCSTA session is only used for monitor and control the normal SIP accounts. The handset is known by the number of the first working account (the primary).

Driver Requirements:


Firmware Requirements (for new installations):

Yealink models supporting uaCSTA tested for use with Go Connect Server
T40P, T41P, T42G, T46G, T48G, T56, T58 Firmware 80,81,82,83

Yealink models supporting uaCSTA not tested for use with Go Connect Server
T53, T54, T56

Yealink models known not to support uaCSTA

Note: Firmware 84 is not supported at this time.

Example = .82 is the firmware version.

Other Requirements:

Handsets need to be configured individually (or via provisioning) to point to the uaCSTA server.Any account on the phone can be used for uaCSTA the line 1 is monitored.

WAN Connectivity Trunk Monitoring Analog Phones Supported Agent Features Supported