The US government released FAR 52.204-24 and 25 a while ago, but seems to start implementing them now. In short, these regulations prohibit anybody to sell telecommunications and surveillance equipment to the government that incorporate products from a few Chinese companies (see below), and it mandates that contractors to the government stop using such equipment (it is a bit more complicated and far reaching, but that is the gist of it. The last one could be critical to a number of companies that use Chinese telecommunications equipment. The Chinese companies are:
Huawei
ZTE
Hytera
Hikvision
Dahua
(and their subsidiaries or affiliates)
This brings me to the Sangoma phones (And older AAstra phones). Does anyone know if these phones (and which ones precisely) incorporate any parts from the above companies?