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Different terms are used for broadband modems, because they frequently contain more than just a modulation/demodulation component.
Because high-speed connections are frequently used by multiple computers at once, many broadband modems do not have direct (e.g. USB) PC connections. Rather they connect over a network such as Ethernet or Wi-Fi. Early broadband modems offered [[Ethernet]] handoff allowing the use of one or more public IP addresses, but no other services such as NAT and DHCP that would allow multiple computers to share one connection. This led to many consumers purchasing separate "broadband routers," placed between the modem and their network, to perform these functions.<ref>{{Cite web|title=What's the Difference between a Modem and Router?|url=https://www.lifewire.com/difference-between-modem-and-router-4159854|access-date=2021-11-23|website=Lifewire|language=en}}</ref><ref>{{Cite web|date=2021-04-07|title=Modem vs. router: The differences between the pieces of hardware that connect you to the internet, explained|url=https://www.businessinsider.com
Eventually, ISPs began providing [[residential gateway]]s which combined the modem and broadband router into a single package that provided routing, [[Network address translation|NAT]], security features, and even [[Wi-Fi]] access in addition to modem functionality, so that subscribers could connect their entire household without purchasing any extra equipment. Even later, these devices were extended to provide "[[Triple play (telecommunications)|triple play]]" features such as telephony and television service. Nonetheless, these devices are still often referred to simply as "modems" by service providers and manufacturers.<ref>hp.com/us-en/shop/tech-takes/modem-vs-router</ref>
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