Hi Anser
I am not sure if your problem has been still exist, but referring to some kind of IP Telephony you need more Power Inline on your Port which would be 15.4 Watts.
Please check this command on your Port: power inline port 2x-mode
RegardsHesam
Hi Pedram,Actually I am not familiar with this type of Cisco Module BUT what is clear, it's a Layer 1 issue because of your output :2960#show interfaces gigabitEthernet 0/21GigabitEthernet0/21 is down, line protocol is down (notconnect)It could a go...
Hi,Have you ever seen this link : http://www.cisco.com/en/US/products/hw/modules/ps4999/products_tech_note09186a00807a30d6.shtmlwhich is introduced this type of module. Also this link :https://supportforums.cisco.com/thread/2038428which is discussed...