Docsis chat

i'm looking for docsis 2/3 frequency plan.
the allocated channels, channel widths, channel spacing ..... upstream and downstream.

i appreciate the help

Hi,

I am trying to do an Image upgrade for a DOCSIS 1.1 Cable modem, I have set the following information in the config file for the cable modem to download the new image after reboot.

TFTP Server 10.1.1.1

Software FileName : sfot_189.img

After rebooting the modem the cable modem downloads the config file and comes online , but fails to download the firmware mentioned in the config file , instead it trows the following error.

Configuration File CVC Validation Failure.

Can someone help me sorting out this firmware upgrade issue.

Can somebody please help this problem ?

Each time my CMTS restart, the IP address, subnet mask and gateway IP reset to 0.0.0.0, but for other parameters still OK, any idea ?

hello everyone

does have anyone use Bigband Cuda3000 CMTS before ?

it's that stable ?

Hello,

What values are defined as best for :

Downstream Power (measured at the modem end)
Upstream Power (measured at the CMTS)
Signal to Noise ratio at both ends
Microreflections
FEC
and any other parameter that is vital for good instalation.

Since I am a new to the DOCSIS world, and have much to learn, it would be good if anyone would like share their practical experience in these matters.

The Casa CMTS looks interesting. http://www.casa-systems.com/
Some one has first hand-on experience on their CMTS ?

... wheel

hi, i wish can help me

the problem is that when i get on line with my cablemodem after 10 hours
my cablemodem began to be restarted
and i cant undestands this erros in log:

Critical 0x040D9A2C DHCP WARNING - Non-critical field invalid in response.

Error 0x040D9A93 ToD request sent- No Response received
Critical 0x045A8148 TLV-11 - Illegal Set operation failed

Critical 0x04E33A10 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 timeout

I have set up a linux box with dhcp and tftp, and I am using docsis configurator to produce .bin files.
All of our modems have received this file, and everything works fine, but now I need to change configuration file to 2 of our modems. I need to change them so that they use different upstream port than the others.
Since they have our old config file in them, how do I tell them that they need to download a new config file ?

Hi All,

My name is Phu Nguyen with CableLabs, Inc in Louisville, CO. I have reviewed the forum rules to make sure there isn't any rules keeping me from introducing myself and possibly posting job openings in the Cable community. (all within CableLabs)

Please (Administrator or Moderator) let me know if this type of activity is unwelcomed.

Thanks,

Phu
Internal Recruiter
CableLabs, Inc

i set up a cm file where i got 3 services flow

upstream

1 primary BE
2 secondary BE (sip)
3 UGSAD (Voice)

the classifier for the voice is with the port 16300-16500

when i use BE instead of of UGS the data come trough the flow but as soon
as UGSAD or UGS come in no data come through sometimes voice doesn't get through sometime the voice goes into the primary flow with the data.

im using ata behind modem with ip flag

0xb8 and 0x68 both for sip and rtp