I have a Cisco 2621 with 2FXS and 2FXO for my landlines, can I setup my 2821 to use my 2621 to make outside calls?
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That should work in my opinion. The 2821 is running CCME? But is that worth the effort? Can't you place the VWICs into the 2821 instead in the 2621?
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it depends on the VIC-cards that you have. The VIC2- are supported on the 2800, but the older VIC- are not. The following document shows the supported cards on the 2800-series:
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