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Cisco 1921 Integrated Services Router - T-carrier/E-carrier - 2 Ports - Management Port - 2 - Gigabit Ethernet - 1U - Rack-mountable, Desktop - 1 Year - TAA Compliance-C1-CISCO1921/K9 : Available at
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Cisco 1900 Series Integrated Services Router Hardware Installation Guide - Installing and Connecting the Router [Cisco 1900 Series Integrated Services Routers] - Cisco
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Cisco 1900 Series Integrated Services Router Hardware Installation Guide - Installing and Connecting the Router [Cisco 1900 Series Integrated Services Routers] - Cisco
Cisco 1905, Cisco 1921, Cisco 1941, Cisco 2901, Cisco 2911, and Cisco 2921 Integrated Services Routers (ISRs) Hardware versions:
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