Network Code:E_Network Address Signaling Code_E_If the device performs either DTMF or pulse signaling (selectable);
Analog Code:FIC_02RV2.T_2-wire loop reverse battery signaling/ loop closure from customer/ reverse battery from LEC/ 600 ohms. Used for Direct Inward Dialing
Digital Code:FIC_04DU9.1KN_4-wire 1.544 Mbps (DS1) with Extended Super Frame