Telecom Technical Telephone over wireless Ethernet Bridge

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Subject Author Date
Telephone over wireless Ethernet Bridge tis 01-26-06
Posted by on January 26, 2006, 5:57 pm
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I am trying to do something that everyone I talk with says can be done
in theory, but nobody has actually done it. Perhaps someone here can
help.

I am trying to connect a corded telephone to a telephone jack via two
wireless bridges (Linksys WET54G v.3 to be exact). Linksys tells me
that it can be done, however won't go into details because that's
not what the unit was designed for. I've been warned about the
higher voltage surges from the telephone's ring, but am not
concerned, as this line never rings.

Here's what I have tried: I took 2 standard rj11 cables and replaced
one end with an rj45, matching the wires to the two center slots on
each of them. All wires are parallel - none are crossed, although I
don't think that would matter with the telephone connection. One
cable has the rj11 in the phone jack and the rj45 in the wireless
bridge. The other cable has the rj45 in another wireless bridge and
the rj11 in the desk-top telephone.

Both bridges are set to ad-hoc mode with the same SSID number (per
Linksys ad-hoc directions) and different static IP addresses and are
using channel 11 with no security. In this configuration, the lights
indicate they are seeing each other, but the telephone has no
connection.

I tried enabling MAC address cloning (I saw that this was an issue with
Xboxes and not knowing anything about how they work, thought I'd at
least try it) but the lights on the bridges then indicated that they
could not see each other.

Just for kicks, I also tried moving the telephone wires to the outside
slots on the rj45 with the same results.

Can anyone give me some insight or help with this? The world won't
end if I can't figure it out, but now it's just one of those things
that is gonna bug the heck out of me until I can get it right! Thanks
in advance!


Posted by Grant Edwards on January 26, 2006, 6:13 pm
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> I am trying to do something that everyone I talk with says can be done
> in theory, but nobody has actually done it. Perhaps someone here can
> help.
>
> I am trying to connect a corded telephone to a telephone jack via two
> wireless bridges (Linksys WET54G v.3 to be exact).

The only way that will work is if it's a VIOP phone and the
"telephone jack" is Ethernet, right?

If it's a "normal" "corded phone" and "telephone jack", then
you're so far off base...

> Linksys tells me that it can be done, however won't go into
> details because that's not what the unit was designed for.
> I've been warned about the higher voltage surges from the
> telephone's ring, but am not concerned, as this line never
> rings.

Huh? There is no ring voltage on VOIP. If you're talking POTS
lines, you may have already blown up one of the bridges. I
don't think Ethernet PHYs are spec'ed to withstand 24V.

--
Grant Edwards grante Yow! Four thousand
at different MAGNATES, MOGULS
visi.com & NABOBS are romping in my
gothic solarium!!

Posted by John L on January 26, 2006, 8:27 pm
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>I am trying to do something that everyone I talk with says can be done
>in theory, but nobody has actually done it. Perhaps someone here can
>help.
>
>I am trying to connect a corded telephone to a telephone jack via two
>wireless bridges (Linksys WET54G v.3 to be exact).

Allow me to disagree with "everybody" and tell you to forget it. If
you were using a VoIP phone that was supposed to plug into an
Ethernet, it would be easy to make it work. If you're using a regular
old phone, it's about as likely to work by plugging it into a WiFi
bridge as by plugging it into a water faucet.

Fortunately, the technology to do a wireless POTS extender is widely
available. It's called a "cordless phone" and it's about $29.95 at
your local K-Mart.

R's,
John


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