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Arris Surfboard SVG2482AC Vs TM822. Which is better?

ARRIS SURFboard TM822 vs SVG2482AC

ARRIS SURFboard TM822 vs SVG2482AC

Why specifically TM822 or SVG2482AC?

Why specifically TM822 or SVG2482AC?

Why do you need the ARRIS SURFboard TM822 or ARRIS SURFboard SVG2482AC?

The reason you are looking at either of the two gadgets is because you need a device that can handle both your internet and phone needs.

Most likely you are a subscriber of Comcast Xfinity triple play service or offerings from other internet service providers that provide you with both internet and VOIP (Voice Over Internet Protocol) services.

If you are someone who has just added Xfinity voice to your plan and find that your existing modem is not equipped for voice service, then you may want to look at these two telephony devices.

Similar functions on both devices

Similar functions on both devices

What are the common base features of both the Arris SVG2482AC and TM822?

First of all both are eMTA devices. eMTA stands for "embedded Multimedia Terminal Adapter."

Just a little basic for everyone before I go further.

You will need a modem to connect your computer to the Internet. The modem is a device that allows your computer to access the internet via telephone or cable lines.

Taking that a little further, a modem/router combo or sometimes referred to as a gateway is a device that combines both a modem and router in one box. You can connect multiple WiFi-enabled devices for example your mobile or smart phone, tablet, notebook computer, etc to the Internet via the router function of the gateway.

You need eMTAs for both Internet and phone service.

The eMTA modem combines the functionality of a modem or a gateway and a phone adapter in one device. That device could be just a modem or the gateway with the ability for you to connect your VOIP phone to it.

What are the differences in both devices?

What are the differences in both devices?

Differences between the TM822 and SVG2482

The major difference between the 822 and 2482 is that the ARRIS SURFboard TM822 is a eMTA phone adapter with just a modem function while the ARRIS SURFboard SVG2482AC is an eMTA gateway.

What this means is that you do not need to connect a wireless router to your modem with the 2482AC. The Arris SVG2482AC is a three in one box with cable modem, wireless router and telephony functions.

As the Arris SVG2482AC has 3 times more download channels than the Arris TM822, it should mathematically be three times faster than the Arris TM822.

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However, whether you are getting that is another thing. This is because the actual speed you get is your allocated bandwidth. The faster speed or wider bandwidth, the more you will have to pay for.

The maximum download speed for the TM822 is theoretically 343 Mbps and 1,000 Mbps (or 1 Gbps) respectively.

There are also other factors to be considered. However I wouldn't be too worried about getting that maximum speed because in real life situations, there will always be that plus and minus tolerance.

Here is the comparison of the major features between both the TM822 and SVG2462AC:

A feature by feature comparison between the Arris Surfboard TM822G and Surfboard SVG2482AC telephony devices

 DescriptionARRIS SURFboard TM822ARRIS SURFboard SVG2482AC


Theoretical DOCSIS Download Speeds

343 Mbps

1 Gbps


For Comcast Xfinity subscribers

Approved for Triple Play and Internet speeds up to 150Mbps

Optimized for use with XFINITY Internet & Voice Service with RDK-B technology to support next-gen products and services


Wi-Fi Speeds

N/A - No build in wireless router

1750 Mbps


Download x Upload Channels

8 x 4

24 x 8


Gigabit Ethernet Ports




Telephony Ports




Telephony services

PacketCable and Euro-PacketCable 1.5 or 1.0 compliant

PacketCable and Euro-PacketCable 1.5 or 1.0 compliant


USB Ports




Wi-Fi Protected Setup (WPS)

N/A - No build in wireless router



Baterry Backup?

Yes but has to be purchased separately

Yes but has to be purchased separately


2 Year Limited Warranty




Cost at time of writing



Should you be getting the newer SVG2482AC or the TM822?

Should you be getting the newer SVG2482AC or the TM822?

Which of these devices should you get?

First of all, it depends on the speed of the service or bandwidth that you are subscribing from Comcast Xfinity for. Both devices will serve you well if you subscribe for the 150 Mbps service.

The major difference here is that with the Surfboard SVG2482AC, you do not need a wireless router. The SVG2482AC is also newer and faster.

If you have been using an existing cable modem and wireless router combination and you still prefer to stick this type of arrangement, then the TM822 will be suitable for you as you can still keep your wireless router while you swap your old modem with the TM822.

On the other hand if you prefer to have just one box, then the Surfboard SVG2482AC could be just the right device for you.

If you also foresee yourself getting into Virtual Reality, streaming Ultra HD or undertaking high-performance gaming, then you should seriously consider the SVG2482AC.

ARRIS SURFboard SVG2482AC Docsis 3.0 Cable Modem

Rear panel of the TM822 G and R versions

Rear panel of the TM822 G and R versions

Want to know more about the Arris TM822?

Click on the link if you would like to find out more about the Arris TM822 in greater details.

By the way, the TM822G and TM822R are the same with the G and R representing the ISP and retail versions respectively.

The back panels are slightly different with the Retail version being more colorful. The idea being that when an owner calls up support, it is easier for both parties to communicate thru the use of colors!

If the Surfboard SVG2482AC is not suitable or too high end for you and you do not like the TM822, then you may want to check out a later model of the TM series, i.e. the TM862G.

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