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ZyXEL > 
Item#: N82E16825188005

ZyXEL BRG35503 DOCSIS 3.0 Residential Cable Modem Up To 160 Mbps Down and 120 Mbps Up RJ-45, Gigabit Ethernet DOCSIS 3.0, 2.0 and 1.1, Euro-DOCSIS 3.0

  • Compatible with Comcast & Time Warner
  • Gigabit Ethernet connectivity
  • DOCSIS/EuroDOCSIS 3.0 compliant
  • 4x4 channel bonding
  • CableLabs CW66 certified
  • Email this page
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Learn more about the ZyXEL BRG35503

Model

Brand
ZyXEL
Model
BRG35503

Spec

Type
Cable Modem
Interface
RJ-45 10/100/1000Mbps Ethernet (Auto-MDI/MDIX)
Cable Interface
F-type RF connector, female, 75ohm
Standards
DOCSIS/EuroDOCSIS 1.1/2.0/3.0 Compliant
SNMP V1, V2c, V3
IEEE802.3, 802.3u

Features

Features
Receiver-Demodulation:
-Demodulation: 64QAM, 256QAM
-Data Rate:
Up to 160 Mbps with 4 Downstream channel bonding (DOCSIS)
Up to 220 Mbps with 4 Downstream channel bonding (EuroDOCSIS)
-Frequency (edge to edge):
88 - 1002 MHz (DOCSIS)
08 - 1002 MHz (EuroDOCSIS)
-Channel bandwidth:
6Mhz (DOCSIS, DOCSIS-J)
8Mhz (Euro DOCSIS)
6 / 8 MHz (Dual Mode)
-Signal Level: 17 dBmV

Transmitter-Modulation:
-Modulation: QPSK, 8 QAM, 16 QAM, 32 QAM, 64 QAM, and 128 QAM (SCDMA only)
-Data Rate up to 120 Mbps with 4 Upstream channels bonding
-Frequency (edge to edge):
5 - 42 MHz (DOCSIS)
5 - 65 MHz (EuroDOCSIS)
5 - 65 MHz (DOCSIS-J)
-Output level of CM can be controlled by CMTS though power ranging function, Step: 1 dB
-Output Return Loss: >6dB

5 status LEDs: Power, Downlink, Uplink, Ethernet, Status

Factory default reset button

Supply voltage of external power supply:
Input 100 - 240 VAC 50/60Hz
Output 6VDC, 1.5A

Product metrics: 180mm (W) x 44mm (H) x 130mm (D)

Weight: 220g approximately

Surge Protection:
On RF Input shall sustain at least 3KV
On Ethernet RJ-45 shall sustain at least 6KV

The BRG-35503 cable modem allows high-speed data transmission through coaxial cable, with 4 DS channels bonding the downstream speeds of up to 220 Mbps from network to the user under bridge mode, and 10/100/1000 Mbps ethernet port from the user to network.
Service Provider
Comcast Network

Quick Info

Warranty

  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years


Customer Reviews of the ZyXEL BRG35503

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Showing 106 of 106 reviews - Clear Filters

  • Mike H.
  • 4/24/2015 5:01:11 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsRan on Comcast network for less than 7 hours

This review is from: ZyXEL BRG35503 DOCSIS 3.0 Residential Cable Modem Up To 160 Mbps Down and 120 Mbps Up RJ-45, Gigabit Ethernet DOCSIS 3.0, 2.0 and 1.1, Euro-DOCSIS 3.0

Pros: It worked for 7 hours on Comcast network

Cons: Ran on Comcast for less then 7 hours before it stopped working
Had Comcast technician out to the house. The modem was just stuck and unable to connect. Everything on Comcast side tested good. Signal strength was good too.
30 day and your stuck with it.

Did you find this review helpful? Yes No

  • Richard L.
  • 4/24/2015 3:26:16 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggsnot Comcast compatable

This review is from: ZyXEL BRG35503 DOCSIS 3.0 Residential Cable Modem Up To 160 Mbps Down and 120 Mbps Up RJ-45, Gigabit Ethernet DOCSIS 3.0, 2.0 and 1.1, Euro-DOCSIS 3.0

Pros: cheap

Cons: you get what you pay for! This modem did not work with Comcast internet service.

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  • JAMES C.
  • 4/13/2015 10:10:53 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsDocsis 3 for docsis 1 price

This review is from: ZyXEL BRG35503 DOCSIS 3.0 Residential Cable Modem Up To 160 Mbps Down and 120 Mbps Up RJ-45, Gigabit Ethernet DOCSIS 3.0, 2.0 and 1.1, Euro-DOCSIS 3.0

Pros: Price, Manufacturer history,Quick ship

Cons: Runs hot

Other Thoughts: Won't deduct for running hot as simply tilt to one side of end standing up--attached cables support that posture. As other reviews state, the install difficulty is with Comcast, not product. After clarifying MAC letter for letter following morning, found that prior day Comcast tech fat fingered a digit.

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  • Valentina B.
  • 4/11/2015 6:39:10 AM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsIt works

This review is from: ZyXEL BRG35503 DOCSIS 3.0 Residential Cable Modem Up To 160 Mbps Down and 120 Mbps Up RJ-45, Gigabit Ethernet DOCSIS 3.0, 2.0 and 1.1, Euro-DOCSIS 3.0

Pros: It works. Comcast 50 Mbps plan. Installation was as easy as calling Comcast to change MAC address.

Cons: Feels and looks cheap. All is well except when the speed goes down on weekend evenings; but I don't think it is on the modem - rather Comcast's poor performance.

Other Thoughts: Yet to see how long it will last - according to many reviews, might not survive after 2-6 months, which is pretty good odds for $30, where Comcast charges $10 a month rent fee

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  • Po C.
  • 4/6/2015 12:15:28 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggs

This review is from: ZyXEL BRG35503 DOCSIS 3.0 Residential Cable Modem Up To 160 Mbps Down and 120 Mbps Up RJ-45, Gigabit Ethernet DOCSIS 3.0, 2.0 and 1.1, Euro-DOCSIS 3.0

Pros: Price, Small in Size, Easy to install.

Cons: None

Other Thoughts: Up and Running in less than 10 minutes. No need to call Comcast at all !

Did you find this review helpful? Yes No

  • Marcus M.
  • 4/4/2015 6:47:21 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsInstalled in 5 minutes

This review is from: ZyXEL BRG35503 DOCSIS 3.0 Residential Cable Modem Up To 160 Mbps Down and 120 Mbps Up RJ-45, Gigabit Ethernet DOCSIS 3.0, 2.0 and 1.1, Euro-DOCSIS 3.0

Pros: Great price, fast install, zero issues.

Cons: None. Very happy.

Did you find this review helpful? Yes No

  • TAYLOR B.
  • 3/26/2015 1:00:44 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsDEAD in 2 months

This review is from: ZyXEL BRG35503 DOCSIS 3.0 Residential Cable Modem Up To 160 Mbps Down and 120 Mbps Up RJ-45, Gigabit Ethernet DOCSIS 3.0, 2.0 and 1.1, Euro-DOCSIS 3.0

Pros: Price with rebate at time of purchase (12/22/2014) was under 3 months modem rental cost with Comcast.

Worked well with 50mb Blast Comcast internet (while it worked)

Cons: Started using 1/9/2015. Worked great (50mb down/10mb up speedtest with Comcast Blast). Had to reset the modem a few times start early March.

3/24/2015 - Status light on modem slow blinking. Internet not working. Navigated to modem diagnostic (192.168.100.1). It was hung up on Download CM Config File. Called Comcast, they reset things on their end. Still not working. After a few hours of auto resetting, it started working again.

3/26/2015 - Same problem. Unable to navigate to 192.168.100.1. Called Comcast, had them reset. Still not working. Called modem manufacturer, waited on hold for 30 minutes. Gave up. Bought the Motorola SB6121. Problem solved.

Other Thoughts: Still waiting to receive rebate.

With 2.5 months of use, assuming I get the rebate, I just barely got my money's worth out of it.

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  • william b.
  • 3/24/2015 11:20:01 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsFaster than Comcast's Doc S 3.0 modem

This review is from: ZyXEL BRG35503 DOCSIS 3.0 Residential Cable Modem Up To 160 Mbps Down and 120 Mbps Up RJ-45, Gigabit Ethernet DOCSIS 3.0, 2.0 and 1.1, Euro-DOCSIS 3.0

Pros: An update to my earlier 2 star review.Laying the modem flat it becomes worrisome to hot and affects performance.Sitting the modem upright and while still warm it is not unacceptable.Also i was being throttled on upload 5mb when paying for 10mb.
Just sitting the modem upright solved both problems.

Cons: runs warm ,the small enclosure istheissue

Other Thoughts: Super positives Zyxel gets 20% more speed than the highend comcast modem Lol i guess comcast has less control over an aftremarket modem.,upload speed is almost a 10% increase.
On Blast 50/10 ,i get 60/11 & NO DROP OUTS ,I can only give it 4 stars due to the heat.But it is a little speed demon

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  • Siyi F.
  • 3/23/2015 4:41:39 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsValue modem

This review is from: ZyXEL BRG35503 DOCSIS 3.0 Residential Cable Modem Up To 160 Mbps Down and 120 Mbps Up RJ-45, Gigabit Ethernet DOCSIS 3.0, 2.0 and 1.1, Euro-DOCSIS 3.0

Pros: Comcast constantly called or emailed to have DOCSIS 3.0 modem required since they upgrade my cable speed to 50 mbps. This small cable modem is a very good one with budget and value with rebate.
No issue and speed went up to 60 compared to my old Motorola 2.0 DOCSIS modem.
I don't believe to either rent or spend $100 for a modem. This is a good buy and worth every dollar spent

Cons: none

Did you find this review helpful? Yes No

  • Steph R.
  • 3/22/2015 1:22:48 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsZyXEL BRG35503 DOCSIS 3.0 Residential Cable Modem Compatible with Comcast Network

This review is from: ZyXEL BRG35503 DOCSIS 3.0 Residential Cable Modem Up To 160 Mbps Down and 120 Mbps Up RJ-45, Gigabit Ethernet DOCSIS 3.0, 2.0 and 1.1, Euro-DOCSIS 3.0

Pros: Improved speed (from 32 Mbps to 60 Mbps!), good price (w/$20 rebate), quick, free delivery (Thanks newegg!), got Comcast off my back because of "outdated" technology.....

Cons: Installation issues (see below), but not necessarily because of the modem issue

Other Thoughts: Only has been in operation for a couple of days, but I'm impressed with performance. Reliability will take longer to determine...keeping my fingers crossed (based on reviews).

Installation was a kind of pain due to spending an hour on phone with 1st and 2nd level Comcast "techs" who could not get it working (seemed OK from their end and the router it was plugged into at my place seemed to be working OK, as well. They just couldn't seem to talk to each other....and, thus, no internet). Pulled this modem and put back older one and everything went back to normal.

Was just about to return/replace with newegg and decided to plug it in near my computer to check a direct connection. Pressed the RESET button (thru small hole in back) for ~20 secs and thought it went dead. However, after what seemed a very long time it came back alive and I noticed the Link status light acting differently from when it was installed (originally was a solid, consistent flash rate. After reset it was more like 5 flashes in a row, then a longer time with LED out, then 5 flashes in a row, etc.).

Thinking something might be different now, I decided to try another install. Lo and behold, I had internet. A bit erratic at first, but there was a connection (and my computer told me I might have log in to get full access). I decided on a do-it-myself provisioning this time. Went to the Comcast activation page (provided by one of the reviewers here, thank you) and went thru the process. Took about 5 mins and was done (did have to go back and re-instate my computer's IP and DNS addresses I had changed as part of the original testing process).

Moral of the story? Before installation, press and hold the RESET button for a minimum of 20 secs. (without WAN or coax connected. Then, if you can, use Comcast's webpage to enable the modem. Once again, techies who knew less than I do (I know this but guess I am always hopeful...silly me :(

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Item#: N82E16825188005
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