I know these Cisco SPA8000 ATAs are outdated; however, there was a need to use them and so we did. Configured all 8 ports accordingly and tested - inbound/outbound calls work and everything is perfect.....until the device ships and is hooked up on a different network. The device will work for a few weeks and then suddenly busy signals are encountered on different ports when attempting to make outbound calls. Is this a common problem? Thanks!
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