Cisco Integrated Service Router 1x NIM-2MFT-T1/E1 IOS-XE 3.16 ISR4331/K9

Adtran Atlas 550 Integrated Access Device W/ 2 T1 Network Modules & Dual T1 PRI

CISCO 2522 Router Frame Relay switch 12.3.26 IOS 3xAvailable

Cisco Model 1841 Integrated Services Router Modular with 1DSU-T1 v2 card

Cisco 4300 Series ISR4321/K9 integrated Services Router w/ pwr supply

Cisco 3800 Series Model 3845-MB Router With Serial 4T, NM-1T3/E3, NM-ESW-16

Cisco 3825 Integrated Services Router 2800 Series

CISCO 3845 Intergrated Router 3800 Series Dual Plug insert