Cisco Third-Generation 2-Port T1/E1 Multiflex Trunk Voice/WAN Interface Card

Expansion module - EHWIC - T1/E1 x 2 - T-1/E-1 - refurbished - for Cisco 2911, 2921, 2951, 3925, 3925 ES24, 3925E, 3945, 3945 ES24, 3945E