C460IP - 1 landline, 1 Voip connection, 1 Voip account, 6 handsets
C475IP - 1 landline, 2 Voip connections, 6 Voip accounts, 6 handsets
N300 - 1 landline, 3 Voip connections, 6 Voip accounts, 6 handsets
N300A - 1 landline, 3 Voip connections, 6 Voip accounts, 6 handsets, TAM [in base]]
A510 - 0 landline, 4 Voip connections, 6 Voip accounts, 6 handsets, PoE
Currently have, or have access to all but N300.
Sadly I do not know exactly what the S685IP does, but Googling reveales what it was a combined handset and base station package and the base station appears to have the same functionality as the C475IP with a TAM in the handset, so it will be an easy replacement for the C460IP, you can put both numbers on it and connect [up to 5 of] your current handsets.
Full description (from Amazon)
Manufacturer's Description
With cutting-edge Bluetooth wireless technology and an integrated answering machine, the Gigaset S685 IP offers you the very best in style and convenience. Thanks to High Definition Sound Performance (HDSP), you can experience Voice over Internet Protocol (VoIP), or internet telephony, in twice the clarity of a normal phone call. Other Next Generation benefits include free info screensavers that bring you RSS feeds and weather forecasts as well as access to an online phonebook directly from your handset. The phone also offers you the convenience of e-mail notification, which means you can find out the time, date and subject of new messages without having to open your e-mail account. With Bluetooth and Gigaset QuickSync software, you can also enjoy instant synchronization of your personal address book between your handset and PC. This phone even features energy-saving ECO DECT technology that makes calling better for the environment – and more cost-effective for you. The Gigaset S685 IP Bluetooth® phone with answering machine lets you make IP and fixed-line calls while enjoying the very latest in design and technology.
When you think Bluetooth, you naturally think wireless. But what exactly are the wireless conveniences you can enjoy with your home telephone? There’s the freedom of talking with a wireless headset, of course, but there’s also something even better – a quick and easy way to transfer vCard contacts to or from your cellphone and PDA with Bluetooth technology. If you have Microsoft Outlook, you can even synchronize the data on your PC with your handset using our free Gigaset QuickSync software. And of course this wireless technology also lets you download screensavers and Picture CLIP images.
You’ll never miss another important call thanks to this phone’s integrated answering machine featuring up to 30 minutes of recording time. New messages are displayed on the phone’s handset, so you’ll know someone tried to reach you even if you’re away from the base station. You can also easily keep track of who called and when because the Gigaset S685 IP announces the date and time of new messages by voice. For added convenience you can operate the machine via the handset, so you can check up on new messages from wherever you are in your house. If you’re away from home this phone will even alert you when you receive a new message via SMS¹. When that happens, you can use the remote playback function to access that message no matter where you are.
The Gigaset S685 IP makes it easy to stay connected with friends and family trying to reach you. Thanks to its handy e-mail notification feature you’ll receive a message on the color display letting you know the time, date and subject of any new e-mails you receive – without having to access your e-mail account.
Experience even greater calling clarity when you make a VoIP call over the internet. The Gigaset S685 IP supports High Definition Sound Performance. This audiosuperior wideband audio quality lets you hear every inflection in the other person’s voice when they speak. Call anyone else with an HDSP capable phone via your broadband connection, and enjoy conversations in twice the quality of a normal phone call¹. Hear the difference yourself by visiting
gigaset-sound.com
Explore the world around you from the comfort of your own phone. The Gigaset S685 IP lets you enjoy free access to an online phonebook directly from your handset. That means you can quickly find any number you need (Chinese take-away, auto repair shop …) and call straight away. Plus, the free info services available through Gigaset.net Info Center put weather forecasts and RSS feeds from your favorite websites right onto your handset via the info screensaver. That’s what we mean by Next Generation communication convenience.
Your world’s at your fingertips with Gigaset.net There’s no quicker way to start phoning with your loved ones over the internet than with Gigaset.net . Purchase the Gigaset S685 IP phone and you’ll automatically become a member of this exclusive Gigaset IP network community. That means you’ll be able to make Voice over IP calls to anyone else with a Gigaset IP phone – anywhere and anytime for free – and you won’t even need an account with a VoIP provider. What’s more, you’ll be able to access free subscription services such as RSS feeds and weather information directly via your Gigaset handset.
The Gigaset S685 IP lets you easily switch between internet and fixed-line phoning at the touch of a button – so you can effortlessly choose the type of phoning that suits you best. With extra handsets you can even experience the convenience of parallel calling – letting you enjoy up to 2 internet calls and 1 fixed-line call at the same time.
Thanks to an energy-saving power supply, ECO DECT phones use up to 60% less energy than our conventional cordless phones. Like all Gigaset cordless phones, ECO DECT models also variably reduce transmitting power from the handset to base station according to their distance apart – but go further in a number of other ways. Choosing ECO Mode on selected models reduces the base station's transmission power by 80%. When docked, some ECO DECT phones also reduce the transmitting power of both handset and base station to almost zero.
The Gigaset S685 IP with High Definition Sound Performance offers you all the advantages of dual-mode telephony and Bluetooth – plus the added benefit of an integrated answering machine. Phoning over the internet has never been more stylish.
Box Contains
Base station
Mains adapter
Gigaset handset
Phone cord
Batteries
Battery cover
User Guide