Cisco 3745 routers DS3 network modules.

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Tags:
DSUs/CSUs
Network Interface Cards
Routers
T-1/T-3 Services
I have a couple of 3745 router and I would like to join them with a DS3 link. Can someone tell me the difference between a NM-1T3/E3, a NM-1HSSI and a NM-1A-DS3 cards ? In what do they differ from one another ? Thanks.
ASKED: March 22, 2005  2:47 PM
UPDATED: March 23, 2005  10:28 AM

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The first network module, NM-1T3/E3, uses coaxial cable for the DS3, the second, NM-1HSSI, uses a High-speed serial interface to connect to an external CSU/DSU, and the third, NM-1A-DS3, uses ATM encapsulation for the DS3.
Basically the differences are how you connect to the DS3 circuit.

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