The Shenou SOT600-IAD-3 integrated access voice gateway with program-controlled switching function is an intelligent, multi-purpose, and reliable integrated access device independently developed and produced by Shenou. The IAD integrated access device is one of the mainstream communication terminal devices for IMS and NGN. SOT600-IAD (3) uses ADI's 32-bit digital signal processing chip BF531 with a main frequency of 300 Mbps as the voice and fax business processor, and adopts Shenou's customized dedicated chip with a main frequency of 800 Mbps and TI's main control processing system with a main frequency of 100 Mbps. The powerful hardware processing capability ensures that the SOT600-IAD integrated access device will not block even under full load conditions. Following standard media protocols such as H.264, G.711, G.729, etc., it supports speech signal encoding and decoding (such as iLBC, GSM, G.711, G.729A, G.723.1), fax (T.38, T.30), and echo cancellation. System capacity: 1 VOIP access+FXO relay access/FXS user extension mixed with 8 to 64 channels (with program-controlled switching function).