Used Cisco 2600 Series -
Channelized T1/E1 and ISDN Network Module

Part # NM-1CT1-CSU

Product Description: 1-Port Channelized T1/ISDN_PRI with CSU Network Module - available with and without a built-in CSU and with one or two ports. The channelized T1/ISDN PRI modules connect to an external CSU. The channelized T1/ISDN PRI CSU modules connect directly to the network. Each of the T1 modules provides up to 24 virtual channels per T1 port. The channelized E1/ISDN PRI modules are available with one or two E1 ports with balanced or unbalanced interfaces and are compatible with the International Telecommunication Union Telecommunication Standardization Sector (ITU-T) G.703/G.704 specifications. The channelized E1/ISDN PRI modules receive and transmit data bidirectionally at the E1 rate of 2.048 Mbps and provide up to 30 virtual channels per E1 port. This product comes with Channel Service Unit. The optional, integrated CSU lets customers consolidate customer premises equipment (CPE) to provide multifunction dial access server, router, and other capabilities within the Cisco 2600/3600/3700 series in power branch office environments. The balanced and unbalanced serial connectivity options enable conformity to a customer's specific application.

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