Cable Modem Troubleshooting: Terayon TJ715x

by Ross McKillop on September 15, 2006

Cable Modems

Light patterns, images, manuals and more helpful info for the Terayon TJ715x cable modem -


terayon tj715x cable modem
Click to enlarge (and animate)
Manufacturer: Terayon Model: TJ715x
Modem Light Indicators
Power Off - unit is not receiving power
On - unit is receiving power
Cable Off - no downstream signal or power off
Flashing slowly - downstream signal present, ranging in progress
Flashing fast - registration in progress
On - modem is acquired and ready to transfer data
PC Off - no carrier to/from PC is present or power is off
On - carrier to/from PC is presentr
Data Off - no data is being transmitted or power is off
Flashing - data is being transmitted
Test Off - initial self-test OK or power is off
Flashing - self-test or software download in progress
On - self-test failure
Notes and Useful Information:

Installation Manual, .pdf (757KB)
Manufacturer Website
Manufacturer Product Page
Manufacturer Support Page

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    { 21 comments… read them below or add one }

    1 Bob 02.17.07 at 7:06 am

    Can I plug cable modem into a typical cable jack for it to work w/o a service and can I use it in AOL Broadband 9.0?

    2 Ed B. 03.14.07 at 4:20 pm

    You would need to have been set up in the cable companies network. The MAC address of the modem would be in a table on the DHCP server. The server would know if you are a valid customer or not by that. The cable company would be an ISP, so you cannot just plug in and start using their service for free.

    So the answer is no.

    3 Nick 03.20.07 at 9:34 pm

    To #1 -

    #2 is correct (though not all cable companies validate service by mac address of the modem in a table on the dhcp server) - the short answer is no, you can’t plug in a modem and get it to work without paying your cable co.

    Nick

    4 Pat Huddleston 07.02.07 at 6:21 am

    Every couple of days my modem’s cable light blinks slowly and I am unable to use my computer. I have tried turning off the computer and/or unplugging the modem. Sometimes it will work, but many times it won’t. As I write this it is doing it again and probably will not let me send this, HELP! I will make several more attempts to send this, or until I finally get it to go thru. Please assist me if you can. This is madening. Why does it do this. I pay too much to not be able to use my computer days at a time. I am a novist at this so if it is my fault, let me have it. Anything to get this fixed. Thanks, Pat. By the way, the data light goes out when this happens, but will blink every few minutes.

    5 Dirk Diggler 08.26.07 at 9:39 am

    That could possibly be many issues. You should contact your cable company and have them look at your signal levels on your modem, specifically your upstream transmit power as it probably is much too high for the device and is causing your intermittent issue.

    This is caused by splitters that go bad or connectors in the house. Also it possibly be the drop from your house to the pole or even the card in the node that may need to be replaced, but either way you need to give them a call and work it out somehow.

    - Cheers

    6 Micah 11.12.07 at 6:32 am

    My kids erase the browser history when they are done using the internet. I have been told the modem holds 3 weeks of history. Is there a way I can access it to view the pages they were on

    7 Jim 11.26.07 at 9:14 am

    I am looking for port forwarding instructions for a Terayon tj715. I am trying to remotely monitor the temperature of my house. I have been told I need to open port forwarding on port 80 and port 30718…

    8 David 12.22.07 at 10:06 am

    When I search for information regarding this model cable modem,I get a Motorola website with absolutely no information regading this modem.
    I am searching for information as to how I can use it on a second computer,does this modem also function as a router.

    9 jamie 06.07.08 at 8:00 am

    can you use this on xbox 360 direct modem connection

    10 Rick G 07.06.08 at 12:52 pm

    David, you cannot directly connect two computers to this modem. The best approach is to acquire a router/gateway box. I use the Linksys WRT54G for both direct connect and for wireless LAN connrctions. The DLink, Netgear and Belkin units also provide good service.

    11 Rick G 07.06.08 at 12:57 pm

    Jamie, I was looking at my XBox 360 and could not find a configuration setup on the XBox. You can use a router between this modem and your XBox. I have used my Terayon TJ715x both for direct connection and wireless connection through the Linksys WRT54G router. Good Luck with that, mine really works great for XBox live.

    12 bob merten 08.12.08 at 7:04 am

    I get a box that says I have 0 days left on my registration and it asks for organization and registration code. Problem is I dont know them any ideas to help me

    13 Gayle 10.05.08 at 6:12 pm

    Help !

    I have my Terayon moden connected to my pc. But I want to eliminate my pc and get internet on my new laptop. Trouble is, when I connect your modem to my laptop it tells me it needs me to put in software. What software? Did I get a CD when they installed my cable???

    Please advice asap if you would.
    Thanks !
    Gayle

    14 Luis Strada 11.10.08 at 6:29 am

    El terayon 715x es un router??? o un modem? anyway …quiero abrir los puertos UDP y TCP para configurar un programa p2p, como lo hago!? ya configurè el firewall bla bla bla bla pero sigo teniendo una idbaja en todos los servidores del programa p2p…HELP PLEASEEEE!!!!

    15 FILBERT GARDUNO 12.27.08 at 8:56 pm

    i would like to hold up my terayon tj715x router via usb connection

    16 Денис 02.15.09 at 10:14 am

    где я могу найти драйвера к модему TJ721x?

    17 kevin 04.22.09 at 9:29 pm

    who can tell me the user’s name and password of this cable modem??

    18 Yang 04.27.09 at 6:14 pm

    All of the lights on my modem are lit, even after “powercycling”. I see that the test light is lit indicating “self test failed”. Does that mean I have a bum modem? Do I need a new modem?

    19 Theresa 05.01.09 at 6:59 am

    please help when I go to change my browser page I get the white page that tells you it cannot be looked up when I go to Network and Sharing I click status the diagnose the first thing it tells me is the modem may be malfunctioning now I tried the unplug for 10 seconds and that does not help I also noticed on the diagnose the sent packets are way lower than than the received is there any updates or anything I can do because right now the only way to fix it is to reset the connection and that only helps temporarily. I have Windows Vista and my phone is going through the computer please help I’m tired of losing signal and calls

    20 peter 05.18.09 at 2:40 am

    ok…any advice would be much appreciated

    i have a similar problem as pat, a few posts above. right now.. it has to be the fifth day that my net isnt working.. data light flashes every now and then. i’ve tried pretty much everything i know of… repair connection, unplug power, disconnect, reconnect, antivirus etc.. i’ve even defragmented my disc, with no result!!
    the thing is that i have a wireless router, which is connected to the modem, and my mother has a wireless card adapter, which connects to the router, and her internet works fine! i have no idea what to do!! please help.
    peter

    21 Jorge 06.28.09 at 10:12 pm

    Hola me podrias decir komo Abrir los puertos de mi modem ? para krear una sala en ARES .

    he tratado de varias maneras y siempre resulta ke no puedo hacerlo kreo ke estan blokeados los puertos desde el modem y nose komo desblokearlos porfavor ayudame

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