T1/E1 Voice and WAN Network Interface Modules Data Sheet - Cisco
Cisco fjärde generationen multi-flex bagageröst/Clear-Channel Data T1/E1 modul – förlängningsmodul – T-1/E-1 – för Cisco 4451-X : Amazon.se: Electronics
NIM-1MFT-T1/E1 1 port Multiflex Trunk Voice/Clear-channel Data T1/E1 Module For ISR4000 Series Routers - China NIM-1MFT-T1/E1, switch moudle | Made-in-China.com