@Miss_Frustrated wrote:
Thank you for your swift response. The VM hub, router and phone are all within a metre of each other. How far apart should they be and should cables not cross?
You would be most likely to experience mains interference if the equipment was piled on top of each other and cables from different equipment wrapped around each other. If the equipment is separated by a metre distance, that kind of interference would be less likely (e.g. in a past topic, the customer had the hub and cordless phone base placed on top of a computer tower and experienced interference which improved when the equipment was separated).
You could also try running individual items of equipment to see if the hum is present on the phone line. e.g. turn off other equipment nearby. Run just the VM hub and the phone and see if the hum is present on the phone line. If no hum, turn on other items of equipment, one at a time, and see if another item causes the hum to appear on the phone line.
High pitched sounds from equipment are often due to individual electronic components inside the units (often noticeable with power supplies). See if you can identify if it is the 360 TV unit itself or the 360 TV power supply that is making the high pitched noise.
Suggest you borrow a phone and see if that improves the interference any. Then post back on here with the outcome.
