@MkrtichBesides different power circuits it could also be the quality of the wiring in the house. The latest seem to be 2GB powerline speed or 1.3GBS powerline with 867MBs wifi (5GHZ) - TPlink.
I have been looking at these for my brothers place, but still trying to find the best as the walls are brick and the floors are concrete and it's a three story place with no CAT 5 or 6 cabling between the floors!!!!!
Yes agree , wiring condition does have an influence. Things have certainly moved fast since last I looked at Powerline Adapters 18 months ago. WiFi is now an optional feature and those TP-Link units appear to have leading operational credentials and the speeds you quoted are unexpectedly high. Powerline Adapter speeds are set by Marketing departments and usually don't take into account real world. With the AV500, I recall getting speeds of under 100 Mbps which was fine. Must do some reading on the newer technologies to catch up on knowledge.
Just realised I didn't paste the French Sagemcom URL in earlier post.
This site shows a lot of Sagemcom modem products - the fast-286-vodafone-super wifi is on Page 5 - it may not be the Optus version - it shares the same form factor - no user guide or specification sheet, just the Certificate PDF which provides part numbers which I have not been able to locate on the web.
If the issue still continues then you are best to raise it with our Technical Support team via the → messaging service to assist you further.
Hi - has the pairing process between the two units failed or if they have paired successfully, can you not connect to the Internet?
According to the Quick Start Guide, pairing or synchronising the Booster to the Modem appears to have three steps , each with their associated LED guidance and levels of unexpected durations. If you received these two units as new items or the Booster by upgrading your plan, it may be worthwhile to check a few things.
The modem may have to auto upgrade its firmware first to SG4Y1T002023 which provides connectivity software for Ultra Boosters - usual indication of an upgrade activity - if it is at an earlier version, Power Reset the modem and after it comes ON, wait for 3 minutes and you may see itself turn itself OFF and then back ON. Then, according to the modem's WiFi Mesh screen, turn ON Bandsteering to Enabled and SAVE/APPLY in order to broadcast a Single SSID so as to bond to the Booster - on my test modem it is Disabled as default. I don't have a Booster. The Booster also may also initiate an auto update during its install process, so it may take a while to go through each of the three stages.
Hopefully the Optus Call Centre can provide some guidance - the Optus FAQ advises if you are not getting connections or the correct LEDs during the pairing stages, to Restart or Factory Default the Booster and try the pairing process again.
May I ask what is the model of the Booster printed on the label in case any other information can be found on the web.