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Hello, I'm trying to figure out the best solution for a 2600 Cisco router. Right now I have an analogue line set aside and was wondering which WIC card I should be using. Would the Cisco WIC-1DSU-56K be the best way to do this? Thanks.
No, the WIC-1DSU-56K is not designed for analog POTS/PSTN service. You'll need WIC-1AM or WIC-2AM. I may also have a config somewhere just for this purpose.