The 1 Port Channelized T1/E1 and ISDN PRI HWIC is updated versions of the E1/T1 ISDN PRI network modules, with the same functions and performance in a compact form factor of HWIC. You can save the network module slots for other LAN/WAN connectivity, and your deployment flexibility is greatly enhanced.
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Electronics, Computer & Photo > Computers & Accessories > Networking Products > Network & Communication > Routing/Switching Devices > Modules