amber light when I plug in t-mbile line link

> Just wondering why the port where I have my t-mobile line link (voip
> phone) plugged in is amber. [...]

   As a description, "my t-mobile line link (voip phone)" is much less
useful than a model number would be.

> [...] My firmware in up to date. [...]

   An actual version number would be more useful than your opinion of
what's "up to date" today.

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual.  Look for "LED and button
descriptions".

      The LED color indicates the speed: white for Gigabit Ethernet
      connections and amber for 100 Mbps or 10 Mbps Ethernet
      connections.

(Further reading might not hurt much, either.)

   Without an actual model number for your "my t-mobile line link (voip
phone)", it's hard to say what to expect for a link speed, but I doubt
that VOIP needs gigabit speeds for proper operation.