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Changing downstream frequency

Hi.  I have a Zoom 5354 modem/router and I would like to change the downstream frequency in an attempt to get better performance and fewer disconnections.  I thought it was as easy as entering the frequency and clicking the TUNE button on the Status/Connection page, but that is not the case.  Is it because Channel 1 is "locked"?  How would I unlock it?  Thanks in advance!  J

Startup Procedure

Procedure Status Comment
Acquire Downstream Channel 729000000 Hz Locked

Downstream Bonded Channels

Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 177 729000000 Hz 0.5 dBmV 43.2 dB 0 0
2 Locked QAM256 178 735000000 Hz 2.7 dBmV 43.9 dB 0 0
3 Locked QAM256 179 741000000 Hz 1.9 dBmV 43.1 dB 0 0
4 Locked QAM256 180 747000000 Hz -0.3 dBmV 43.0 dB 0 0
5 Locked QAM256 181 753000000 Hz 3.3 dBmV 43.2 dB 0 0
6 Locked QAM256 182 759000000 Hz 4.2 dBmV 43.9 dB 0 0
7 Locked QAM256 183 765000000 Hz 2.3 dBmV 43.3 dB 0 0
8 Locked QAM256 184 771000000 Hz 4.2 dBmV 43.8 dB 0 0

Upstream Bonded Channels

Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 2 5120 Ksym/sec 32300000 Hz 57.0 dBmV
2 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
3 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
4 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV

Downstream Frequency Select                 TUNE
  • Pretty sure the downstream frequency is locked based on the negotiation between the modem and Cox's systems(CMTS). On some modems you can change where it starts the scan, but never seen that option on a modem/router combo like the Zoom 5354.

    If your having disconnect, based on your signal levels I would say upstream is your issue, not downstream. Should be below 50. Yours is so high it isn't channel bonding.

  • Hi there, you'll have to go through the Zoom Admin Portal which is the Zoom Configuration Manager. Any further detail than that is beyond the scope of our support. You may want to check with the with support team of your modem's manufacturer.  I'm including a link that will help you with this .  You'll need to scroll all the way to the end of the article for the PDF User Manual.   -Carol Cox Support Forums Moderator