Arris TG1672G DOCSIS 3.0 Telephony Gateway Modem Router

The Arris TG1672G is a three-in-one Touchstone gateway from the Time Warner Cable era: a 16x4 DOCSIS 3.0 cable modem, a 4-port gigabit WiFi router, and a two-line telephone adapter in a single box. If your cable provider still supports it, this refurbished unit replaces a leased gateway and its monthly rental fee with one device that handles internet, WiFi, and home phone together.

It was deployed heavily by Time Warner Cable, Bright House, WOW, and RCN, and it remains a direct swap for households replacing a failing unit of the same model.

Quick Specs

Internet, WiFi, and Phone in One Box

Most gateways handle internet and WiFi. The TG1672G adds two FXS telephone ports on the back, so your existing home phones plug straight into the gateway and run over your cable provider's voice service. Arris built its reputation on telephony hardware, and the TG1672G uses a dedicated multi-processor design so heavy downloads and streaming never degrade call quality.

16x4 DOCSIS 3.0 Performance

With 16 bonded downstream channels and 4 upstream, the TG1672G comfortably serves cable plans up to roughly 300 Mbps. That covers streaming on multiple TVs, video calls, and everyday browsing for a typical household. It is not the right pick for gigabit tiers; if you are on a plan above 300 Mbps, step up to a DOCSIS 3.1 modem instead.

Dual-Band WiFi with Beamforming

Two independent 802.11n radios broadcast on 2.4 GHz and 5 GHz at the same time, with 3x3 antennas and beamforming to push the signal toward your devices. For phones, laptops, and streaming boxes in a small to medium home, the built-in wireless does the job. If you have a large house or dozens of devices, the four gigabit LAN ports make it easy to add a stronger standalone router while the TG1672G keeps handling modem and phone duty.

MoCA and Wired Connections

Built-in MoCA 1.1 lets the gateway distribute network traffic over your home's existing coax wiring, useful for cable boxes and rooms without Ethernet runs. Four gigabit ports cover desktops, consoles, and smart TVs the reliable way.

Will It Work With Your Internet?

The TG1672G is a cable device, so it works only with cable providers, and because it is a telephony gateway, your ISP must provision it on their network. It has the strongest history with Spectrum (former Time Warner Cable and Bright House markets), WOW, and RCN/Astound. Phone service in particular is activated by the provider, not by you, so confirm with your ISP that they will provision this model on your account before switching over. It is not on Optimum's approved list.

Frequently Asked Questions

Is the TG1672G a modem or a router?

Both, plus a phone adapter. It combines a 16x4 DOCSIS 3.0 cable modem, a dual-band WiFi router with four gigabit ports, and two analog telephone lines in one device.

Can I use it without cable phone service?

Yes. The voice ports simply go unused and the gateway works as a standard modem-router combo. If you do not need phone lines at all, though, a data-only modem or combo usually activates with less friction.

Will my ISP activate the phone lines?

That depends on the provider. Voice service on cable networks is provisioned by the ISP, and some providers only provision telephony on gateways they lease. Call your provider with the model number before relying on it for your home phone.

What internet speeds can it handle?

16x4 channel bonding supports real-world plans up to about 300 Mbps. For 500 Mbps and gigabit tiers, you need a DOCSIS 3.1 device.

What is the difference between the TG1672 and the TG1672G?

The G designates the gateway version with built-in dual-band WiFi. This listing is the TG1672G, the wireless model.

Does the refurbished unit come with a warranty?

Yes. Every refurbished device we ship is tested, factory reset, and covered by our 90-day full-coverage warranty.