Cisco 1 port Multi-flex Trunk Voice/Clear-channel Data T1/E1 Module - For Voice, Wide Area Network - 1 x T1/E1 Network

With T1/E1 technology, enjoy up to 2.048Mbps (E-carrier) or 1.544Mbps (T-carrier) data transfer rate over service provider link WAN Interface Card (WIC) with voice application/usage for reliability and maximum efficiency WAN Interface Card (WIC) offers better usage with maximum efficiency and convenience