1~30 POTS (FXO/FXS) over E1 multiplexer is a kind of point-to-point transmission device. Cubetel designed 1~8/1~16 POTS (FXO/FXS), 1~4 channel 100M Ethernet, transmit over copper, and it could match different customer requirement and 16 Voice POTS (FXO/FXS) over E1/G.703 multiplexer provides conversion between ITU-T G.703 standard E1 framed interface and 1-4 fast ethernet+1~16 voice POTS FXO/FXS interface, can through E1 channel provide 1-16 voice, realize the long-distance extend of telephone line through E1 channel. know more