Grandstream Networks GSC3516 User Manual page 11

It is recommended to use PoE+ power supply to achieve the best audio effect.
Powering GSC3506
Connecting Wiring Seat for GSC3506
GSC3506 support connecting a "Normal Key" to a 2-pin port via Wiring Seat.
Step 1: Take the wiring seat from the install kits.
Step 2: Connect the Normal Key with the wiring seat (as shown in the illustration below).
Connecting Wiring seat
Access GSC35X6 Web GUI
The GSC3516/GSC3506 embedded Web server responds to HTTP/HTTPS GET/POST requests. Embedded HTML pages allow
users to configure the application phone through a Web browser such as Microsoft's IE, Mozilla Firefox, Google Chrome and
etc.