WRT54G interference with 5.8 Ghz Cordless telephones?

Discussion in 'Cisco/Linksys Wireless Routers' started by sdgeiger, Jan 25, 2006.

  1. sdgeiger

    sdgeiger Network Guru Member


    I have the Linksys WRT54G (version 1) router and Panasonic KX-TG5423M 5.8 Ghz cordless telephone.

    I periodically notice problems where I am losing connection while on a call.

    Does anyone know if there are any known problems with this router and interference with 5.8 Ghz cordless telephones? If so, can I make some changes to my router so it doesn't interfere with the telephone?

  2. Chuck_IV

    Chuck_IV Network Guru Member

    There shouldn't be at all. The WRT54G runs at 2.4mhz. Are there any other phones in your house, that may be 2.4ghz?
  3. NateHoy

    NateHoy Network Guru Member

    The only thing I can think of is that the phone is a DSS (Digital Spread Spectrum), and that maybe it uses the 2.4Ghz range for some other data, or has signal going through 2.4GHz as a backup frequency? The handset-to-handset intercoms? I dunno. Doubtful.

    Generally, the best channels to avoid interference are 1 and 11, since they both tend to be outside the normal ranges used by cordless phones if I recall correctly. You can always try shifting frequencies around a bit...
  4. jgutz20

    jgutz20 Network Guru Member

    im guessing it was just coincidence, maybe a neighbors phone just rang (if you live in an apartment). 5.8 runs only at 5.8, no backup frequency
  5. NateHoy

    NateHoy Network Guru Member

    That is probably true of the Panasonic. However, at one point, AT&T had a phone that was advertised as a 5.8, but it used a mixture of 5.8 and 2.4. Probably won't run into them any more, though, so it's unlikely that Panasonic would bother with two frequencies like that.
  6. sdgeiger

    sdgeiger Network Guru Member

    The phone I have is te Panasonic KX-TG5423M.

    It uses FHSS (Frequency-Hopping Spread Spectrum) technology.

    Here's the link to the phone: http://snipurl.com/lxwc

    My WRT54G is set to channel 11.
  7. jgutz20

    jgutz20 Network Guru Member

    yea man, i'd say it was just coincidence, if you keep having this issue just try changing the channel until you find something thats working. *Most* 2,4ghz or 5.8ghz phones would change channels automatically if they detected interference meaning this would most likely only happen once if it was your phone
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