Need your help guys, we have this problem with BP250 DECT phone users wherein they encountered static noise/buzzing sound on their cordless phone. We have tried to change the cordless phone of the users who encountered the issue but they still experience the same issue. Then, we have also tried to change one of the base stations near to the most users complaining this issue but we still receive complains after that. We also restarted the whole system to check if it can resolve the issue but still no luck. The issue is intermittent, and we encountered it also for internal and external call when we did testing. The issue only happened recently. Any idea what could be the issue? Thanks.