FYI, as a follow up I finally resolved the issue. Hopefully this information will help someone else that may run into the same problem. After purchasing the ProSupport warranty upgrade ($121 out of pocket mind you) and speaking to a total of 4 ProSupport techs an another 3rd Tier expert technician (available only via chat message between one of the ProSupport phone techs and the 3rd Tier expert tech - i.e. I could not speak to or chat with that person myself) the consensus was that the hardware must be bad. When I bought the X1052P I bought two of them so the easiest way to tell if it was a bad switch was to simply configure the other switch and see if the behavior happens on that one, too. Well, that switch also rebooted every time I assigned the 'phone' profile to more than about 13 or 14 ports on the switch. It seems it wasn't a hardware problem after all. I went back to the original switch and tried some new things hoping I could stumble across a solution and it turns out that the solution was to NOT use the voice VLAN on the switch. It doesn't work!!! SOLUTION: I configured VLAN ID: 15 manually and did not assign any phone profiles to any of the ports. That is how I resolved the problem. So it must be bad software on the switch. I looked to see if there were any firmware updates on the Dell support site but there were none. Manually configuring the phone VLAN was the solution. What a freaking nightmare that turned out to be. Perhaps someone in Dell could note this problem and test it in-house. And, if you'd like to compensate me for the 20+ hours that I spent working on this problem that's be great, too.
Can someone help me understand how to configure the X1052P voice VLAN? I've spent several hours trying to get this working and it's not working. I spent about 4 hours on the phone with a Dell tech tonight and he couldn't get it working and eventually gave up. He told me I needed to upgrade my warranty to ProSupport because he didn't know how to resolve the issue. What a bunch of ***. It's a simple VLAN configuration. What should be so hard about this? Anyhow ... Setting up the VLAN should be pretty straightforward but apparently on this switch it is not. The 406-page user guide isn't very helpful other than explaining what the various options mean. I will admit that I am not a VLAN expert so I'm sure I've configured something incorrectly. But recall, the Dell tech couldn't get it working either. Here's my situation ... I have VoIP phones on my network connected to a network jack on the wall. Connected to the phones are my user computers. The user computer and its respective VoIP phone both share the same data cable. Prior to replacing the ISP's Cisco managed switch all of this worked fine. The problem is they had direct access into our network so I removed their switch and installed the X1052P in its place. I've spoken with the ISP to let them know what I'm doing and they said all I needed to do was setup VLAN ID: 15 for the voice VLAN because that is the VLAN ID that their router uses to route phone traffic. The ISP's router is also the DHCP Server for VLAN 15 and issues IP address to phones using 172.27.0.0/24 with a DHCP range of 172.27.0.50-150. I've tried configuring the switch using Static VLAN settings and also Voice VLAN settings and neither one seems to do what I want it to do. Network Administration > VLAN > Static VLAN Network Administration > VLAN > Voice VLAN I've enabled the 'phone' profile on the ports that I want added to the voice VLAN and that doesn't work. By the way, port 47 on the switch is wired directly into the ISP router and that is configured as a trunk port with the default VLAN 1 untagged and VLAN 15 tagged. For the other ports I've tried setting up General, Access and Trunk settings on each port to see if I could get anything going and still nothing happens. When I setup the ports as General VLAN ports I made sure to add VLAN 1 as an untagged VLAN and VLAN 15 as a tagged VLAN. Still not working. That's the short story of where I'm at now. Any help is greatly appreciated.
Having trouble getting the voice VLAN on the X1052P switch to work at all