I have a problem in which my upload becomes unstable when downloading, sometimes the upload becomes stable after the download is finished and sometimes it stays unstable and the only way to fix it is to restart the cable adapter.
I have the Telstra Smart Modem and the cable adapter (I think it's the CM450 and I also think it may be the cause of this problem).
Has anyone else had similar issues? and does anyone know of a way to fix this?
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Post your modem RF stats:
On a Cable Home Network Gateway
http://192.168.0.1/ > Connection (Under Maintenance)
On a Cable Gateway Max
http://192.168.0.1/ > Advanced > Broadband Connection > Connection Settings
On a Cable Adapter + Gateway Setup
(CM450. You will need to plug directly into the adapter with Ethernet):
http://192.168.100.1/ > Broadband Connection > Connection Settings
Default Username/password: admin/password
You're looking for Frequencies, Power Levels, SNR, etc
Certainly nothing wrong with the connection stats, though you could try a frequency hop by leaving the coaxial unplugged from the wall socket for 5-10 minutes (If you have FOXTEL plugged into another socket this will need to be removed as well as it can keep a connection 'live')
Barring that it could be a modem issue. Wouldn't hurt to factory reset it as well