More About Our Products What's the difference between 'with modem' and 'without modem'?   Can I have another telephone extension running from the splitter/front plate or ADSL filter?   What is the specific transmission speed for BT Yahoo! Broadband?   How much can I download?   Can I use remote access software to administer my computer?   Can I have wireless network with my BT Yahoo! Broadband products?   Are the speeds, inbound and outbound, guaranteed?   Is 'tunnelling' possible?   What is the contention ratio?