Alright, I'm hoping for some insight on something I ran into that could explain what I saw.
So, there is a ATT SB35010 device that has 3 phone lines hooked into it, then from that device comes an Ethernet Line that hooks into a switch in which the device get's an IP address assigned to it for the VOIP phones.
Usually, when two ends of a Ethernet Cable is hooked up and active on both ends you see the lights turn on the port showing speed/activity. Well when you have an Ethernet cable coming from the SB35010 to the Switch, there isn't any light at ALL but heres the fun part. If I take the end of the Ethernet that's hooked into the SB35010 (while other end is still in switch) and hook it into my laptop and wait to get internet connection, the light on the switches port turns on then I switch it back into the SB35010 and as soon as I do that, the light on the SB35010's ethernet port turns on and everything works wonders... if I unplug it and plug it back in.. the light doesn't turn on and it doesn't work.
What is causing this issue to happen and why must I plug it into a laptop first before the device for it to work properly? This has been confusing me, it works great but if the power goes out and the backup battery runs out then I'll have to go back to the location and do that hold unplug, plug then unplug and replug again. With an unmanaged switch, I don't have any problems but when I do anything with any managed switch I have to the same song and dance again.
Any help would be appreciated.
