Expansion module - EHWIC - 2 ports - T-1/E-1 - for Cisco 1921 1921 4-pair 1921 ADSL2+ 1921 T1 1941 2901 2911 2921 2951 3925 3945
Cisco Third-Generation 2-Port T1/E1 Multiflex Trunk Voice/WAN Interface Card - expansion module - 2 ports