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in my network 4503 switch is installed. the Power supplies of 4503 is frequently failing. even power ground is fine. and Steabilizer and UPS is also connected. Suggest me the reason of failure.
My old setup for cisco voice network- PRI Line router --> CCM 4.1 --> cisco 4503 core switch--> Access switches --> Ip Phone devices. Ip Addresses are statically configured in all ip phones according to vlans. tftp server is our call manager for loading ios flash to ip phone. Now my...