Buying own Modem

We are using Comcast Business Starter Internet for our office and planning to buy a modem instead of leasing it.

I'm checking Comcast's website. It's showing the following modems are compatible for our service.

Arris/Motorola Retail SB6120 SURFboard DOCSIS 3.0 Cable Modem
Arris/Motorola Retail SB6121 SURFboard DOCSIS 3.0 Cable Modem
Arris/Motorola Retail SB6121 SURFboard DOCSIS 3.0 Cable Modem
Cisco DPC3008
Cisco DPC3939B
Netgear CG3000DCR
SMCNetworks SMCD3G-CCR

Which one would be better for a small business?

When I search through forum, SB6141 seems not support Comcast Business. Then why this is listed in my search?

Thank you.

Responses

Accepted Solution

Grace

New problem solver

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2 Messages

10 years ago

so which one would you recommend from the seven modems?

Thanks.

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Accepted Solution

CC_Jacob

Official Employee

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869 Messages

10 years ago

Hello arcamm,

Unfortunately in order to use a Comcast assigned static IP you must use Comcast equipment. At this time Static IP's are not available for use on customer owned equipment.

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Accepted Solution

I bought a cisco for own use, as I do NOT want any modems with wireless even turned "off," and I wanted the USB and ethernet. Multiple calls to Tier 1 customer service has refused to even look at the MAC or model number so far. They insist "we don't support ANY cisco models." Any advice for getting past tier 1 level? Thanks, wiredngrounded

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Accepted Solution

BenZvan

New Member

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1 Message

10 years ago

Has this been fixed yet? I would like to stop paying rental prices equivalent to buying a new modem every 6 months but I have static IPs.

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CC_John

Retired Employee

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1.9K Messages

10 years ago

Hi Grace. While the Arris/Motorola SB6141 is certified for business services, as a standalone modem, it does not support static IP addressing. As a DOCIS 3 device it will accommodate the Comcast Business speed tiers.

Thank You

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farrow

New problem solver

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17 Messages

10 years ago

Can you please comment on which one is good for static ip addresses on a business tariff?

Thank you

Farrow

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CC_John

Retired Employee

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1.9K Messages

10 years ago

Hi Farrow. Both the Arris/Motorla and the Cisco devices can be used with any network configuration that only requires a bridged device or does not require a static IP address. The Motorola SB6141 is widely available in the various retail outlets.

Thank You

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arcamm

New Member

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8 Messages

10 years ago

So which modems are approved for accounts with a static IP?

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arcamm

New Member

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8 Messages

10 years ago

My network is currently setup with the Comcast SMC setup to bridge to our router/firewall. The static IP is setup in the router.

Can I do this same type of setup with a different modem (my own) or can I ONLY use the Comcast provided modem?

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JasonColeman

New problem solver

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21 Messages

10 years ago

I wish I had known that before I purchased and attempted to activate a SB611 Comcast_Jacob. Is is not well documented at all that you CANNOT use your own gear with a static. All it would take is a single sentence on the modem compatibility list. Instead, I get to pay 9$ to ship a modem back to Amazon.

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CC_Jacob

Official Employee

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869 Messages

10 years ago

Hello BenZvan

Unfortunately not, in order to use a Comcast assigned static IP you must use Comcast equipment. At this time Static IP's are not available for use on customer owned equipment.

Thank you

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