Do I need to restore a modem supplied by Telco to its factory settings before I can use it as a "bridge"? What's the best way/setting to use said modem to extend wifi signal to another room?
If it's too difficult, I might just sell the modem. Should I reset the modem to factory settings before selling, or it's ok to leave as is and let the buyer tinker with it?
Cheers
No
You don't need to, but i generally do out of practice, plus it's good to update the firmware anyway
What make and model is the modem?
Netcomm Wireless
There are LOTS of Netcomm wireless modems. Find the model in the list here:
http://bc.whirlpool.net.au/bc/hardware/
On here, you'll find links to all sorts of helpful stuff such as the manuals, default password and IP settings for when you factory reset it, and what it's capabilities are.
What's the best way/setting to use said modem to extend wifi signal to another room?
No
Try http://forums.whirlpool.net.au/forum-replies.cfm?t=933517
Yep