I am looking for a 4 or 8 port PBX Gateway that is compatible with Yeastar S100. I am currently looking at the "Grandstream Powerful 8-Port FXS Gateway with Gigabit NAT" or "Grandstream GS-HT814 4 Port Ata with 4 Fxs Ports and Gigabit NAT Router". However, I want to be sure that they are compatible with the Yeastar S100. If not, can you recommend a PBX gateway (4 or 8 port) that is compatible with the S100 and how it must be configured?
(Not sure if the correct topic has been selected, correct me if I'm wrong please.)