Hi All

Hopefully someone here might be able to help with a VOIP Phone issue

I recently purchased a Grandstream 1610 Voip phone, set it up in my office, all is working fine running through 2talk it rings in and rings out.

However it also rings every few minutes for no reason with caller ID numbers in the 300+ range or 900+ range they are phantom calls no one on the other end.

I took the system home set it up upgraded the firmware, rebooted it back to factory settings reconfigured it to the settings I require and not a peep from it.

I take it back to my office and it kicks off again ringing every few minutes non stop, have Googled and followed a number of leads on the internet but nothing.

My broadband provider at the office and at home is Big Pipe the only difference between the two is my office has a static IP address, so its got me stumped as to why it constantly ringings in my office but is fine at home.

Anyone come across anything like this before.