Cascade Mode - Grandstream Networks GAC2500 User Manual

If the GAC2500 is not connected to the SPKR USB interface it will prompt the following message in order to switch the port on
the GVC3200.
Note
If GAC2500 is connecting to PC via Micro-USB but there is no audio output from GAC2500, it is because the PC uses default
audio output in most cases. Please configure GAC2500 as default audio output.

Cascade Mode

Connect two GAC2500 (s) via RJ48 CAT5 for larger space. Please follow the steps below to connect.
1. Connect the LAN port of the device to the external network port (the port in the office or at home) via Ethernet cable;
2. Connect the RJ48 ports of two devices with RJ48 CAT5;
3. Plug in two power adapters into the power supply interfaces then power up two devices;
4. The screen is as shown below. Tap on "Yes" on the first device and set it to be the master while the other the slave.
Figure 6: Connected to Wrong USB Port
Figure 7: GAC2500 Cascade Mode Screen