I'm installing CUCM 6.1 on one of my best customers but I'm experiencing problems whn connecting the PCs to the device port on the IP phones.
All the phones are connected to a 3750G-PoE and registered with the CUCM. When I attached a PC on the phone's PC port, the PC's NIC doesn't come up. I have checked the cable connecting the PC directly to the switch, and it goes fine. I have also tried it wirh different IP phones (2 7941 and 2 7961) with the same result: the PC doesn't have connection.
I have also verified that in Phone's configuration page, the 'PC Port' is enabled.
Re: PC Port not working on IP Phones with CUCM 6.1
it seems I have a strange ethernet cables. I have tested 3 cords that worked fine when connecting the PC directly to the switch but didn't work when connecting the PC to the IP phone. After 3 lost hours, I have decided to go to my office and collect some new cables. Everything works now.
So, if you ever experience some problem like that, suspect about the cable. My god, 3 hours lost for a 'magic' cables.
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