From: "Mark Henigan" <os2-wireless_users@2rosenthals.com>
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Date: Fri, 14 Mar 2008 04:55:10 -0800
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To: OS/2 Wireless Users Mailing List <os2-wireless_users@2rosenthals.com>
Subject: Re: [OS2Wireless] VOT (very off-topic)
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Doug LaRue wrote:
> ** Reply to message from "Leon D. Zetekoff" <os2-wireless_users@2rosenthals.com> on Mon, 11 Feb 2008 12:43:36 -0500
> 
> Why not just use one of the dozens of cordless pones and be done with it. Just connect the base unit up
> to where you do have a connection to the twisted pair wire and keep the phone in the room without the
> wiring. For about $40 you can get a kit with 2 phones so the 2nd phone has a small charging station.
> 
> I wouldn't touch putting the ~48v ac signal and voice calls over coax when it's so cheap and easy to just
> use a cordless setup.

Hello Doug:

This is very old.  But, I just regained email access.
And, here it is!  There is no access to a connection
with TP.  The run is short.  The main issue is current
not voltage (so long as the dielectric constant of the
cable is within a reasonable range) because heating of
a wire is proportional to the square of the current
without even considering the voltage.  Also, since the
run is short, the capacitance of the cable does not
amount to enough to adversely affect transmission.

Finally, I don't want multiple extensions for this
phone.  It is the main number for an itinerant medical
practice.  Privacy is an issue, as is not wanting to
have it intrude into every room of the house.

I'm sorry that I didn't put a diagram together to show
what I was describing in words since the words clearly
did not communicate the physical circumstances I was
facing.

Thanks for your thoughts!

- Mark

Mark Henigan
-- 

> Doug
> 
> 
>>Mark...I would NOT use coax. Most telephone cables of recent vintage should have at least two pairs in there and one is usually
>>unused unless you've got a second phone line. So what I would do is check the existing wiring and use the unused pairs and then tap
>>that off with a junction box somewhere. Otherwise either tie a telco cable to the coax and pull it through the wall or just drill a
>>hole and run a cable.  That's my $0.02. ;-)  leon  * Mark Henigan wrote, On 2/10/2008 10:29 PM: >> Mark Henigan wrote: >> >>> A
>>very off-topic question aimed at anyone on the >>> list with telco experience. >>> >>> I have a second phone line to install that
>>only >>> needs to run to one room. There is already an >>> unused coaxial cable from a previous installation >>> by a cable TV
>>company connecting the area of the >>> junction box to that room. The incoming phone >>> line is only a two-wire connection. Would
>>the >>> impedance/capacitance/inductive load of the coax >>> be compatible with a telephone connection? I'm >>> trying to save the
>>trouble of installing >>> additional premises wiring in a house that we >>> rent. Making adapters to allow modular >>> connectors
>>to interface with the coax is no >>> problem for me so long as the characteristics >>> of the line would allow it. >>> >>> TIA, >>>
>>
>>>>>- Mark >>> >>> Mark Henigan >> > Ed Durrant replied: >> Phone lines are usaually 600 Ohm impedance, co-ax on the other hand >>
>>
>>is 50 or 75 Ohm. >> >> I'd try it since it's there - the worst that I would expect is that >> the volume on one or both phone units
>>will be lowered and if that's >> the case you can easily disconnect the cable. Chances are it'll work >> fine. > > Hello Ed: > > I
>>think I need to describe the situation a little > more clearly, given your reply and several others. > > I am talking about a
>>second telephone line, not > splitting a single phone line.  The new line is > for my business number.  It runs to my home >
>>because I am only in the office with a door that > bears my name one day a week.  So, I chose to have > the address listed as the
>>office location but the > installed line at my home where I could have more > efficient access to it.  My wife is my assistant >
>>and will be able to use the line for reception of > messages and to schedule appointments. > > The telephone company (AT? >
>>although this causes ground loops in many > configurations requiring isolation transformers). > I realize the foil shielding of
>>much HF coax is > not a great conductor.  However, it should be > adequate from what others (Ed and Jeffrey) have > said.  If, as
>>noted by Jeffrey the cable or > connectors are of poor quality or condition, I > can always install a new connector (I have a >
>>compression type installation tool.) or remove > the cable and install telephone cable in its > place.  I'd rather avoid the latter
>>since the > cable enters the house of the second floor. > > So, thank you all for your suggestions and > thoughts on this rather
>>confounded question! > I'll try the installation using the coax and > revert to replacing (or adding a run of phone > cable in
>>parallel with) the coax if it does > not work. > > Again many thanks!  There is so much knowledge > available on this list! > > -
>>Mark > > Mark Henigan > -- > > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > This message is sent to you
>>because you are subscribed to >  the mailing list . > To unsubscribe, E-mail to:  > To switch to the DIGEST mode, E-mail to >  > To
>>switch to the INDEX mode, E-mail to >  > Send administrative queries to >  > To subscribe (new addresses), E-mail to: >  and reply
>>to the confirmation > email. > Web archives are publicly available at: http://lists.2rosenthals.com > > This list is hosted by
>>Rosenthal & Rosenthal, LLC > P.O. Box 281, Deer Park, NY 11729-0281. Non- > electronic communications related to content >
>>contained in these messages should be directed > to the above address. (CAN-SPAM Act of 2003) > >
>>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > >  -- *Leon Zetekoff* Proprietor 	 *Work:* 484-335-9920
>>*Mobile:* 610-223-8642 *Fax:* 484-335-9921 	*Email:* wa4zlw@arrl.net  *http://www.linkedin.com/in/leonzetekoff* 	*BackWoods
>>Wireless*  505 B Main Street  Blandon, PA 19510 "Bringing Broadband Technology to Rural Areas"  See who we know in common  	Want a
>>signature like this?    The following text was extracted from HTML:  Mark...I would NOT use coax. Most telephone cables of recent
>>vintage should have at least two pairs in there and one is usually unused unless you've got a second phone line. So what I would do
>>is check the existing wiring and use the unused pairs and then tap that off with a junction box somewhere. Otherwise either tie a
>>telco cable to the coax and pull it through the wall or just drill a hole and run a cable.  That's my $0.02.  ;-)  leon  * Mark
>>Henigan wrote, On 2/10/2008 10:29 PM:  Mark Henigan wrote:  A very off-topic question aimed at anyone on the list with telco
>>experience.  I have a second phone line to install that only needs to run to one room. There is already an unused coaxial cable
>>from a previous installation by a cable TV company connecting the area of the junction box to that room. The incoming phone line is
>>only a two-wire connection. Would the impedance/capacitance/inductive load of the coax be compatible with a telephone connection?
>>I'm trying to save the trouble of installing additional premises wiring in a house that we rent. Making adapters to allow modular
>>connectors to interface with the coax is no problem for me so long as the characteristics of the line would allow it.  TIA,  - Mark
>>Mark Henigan  Ed Durrant replied: Phone lines are usaually 600 Ohm impedance, co-ax on the other hand is 50 or 75 Ohm.  I'd try it
>>since it's there - the worst that I would expect is that the volume on one or both phone units will be lowered and if that's the
>>case you can easily disconnect the cable. Chances are it'll work fine.  Hello Ed:  I think I need to describe the situation a
>>little more clearly, given your reply and several others.  I am talking about a second telephone line, not splitting a single phone
>>line.  The new line is for my business number.  It runs to my home because I am only in the office with a door that bears my name
>>one day a week.  So, I chose to have the address listed as the office location but the installed line at my home where I could have
>>more efficient access to it.  My wife is my assistant and will be able to use the line for reception of messages and to schedule
>>appointments.  The telephone company (AT? although this causes ground loops in many configurations requiring isolation
>>transformers). I realize the foil shielding of much HF coax is not a great conductor.  However, it should be adequate from what
>>others (Ed and Jeffrey) have said.  If, as noted by Jeffrey the cable or connectors are of poor quality or condition, I can always
>>install a new connector (I have a compression type installation tool.) or remove the cable and install telephone cable in its
>>place.  I'd rather avoid the latter since the cable enters the house of the second floor.  So, thank you all for your suggestions
>>and thoughts on this rather confounded question! I'll try the installation using the coax and revert to replacing (or adding a run
>>of phone cable in parallel with) the coax if it does not work.  Again many thanks!  There is so much knowledge available on this
>>list!  - Mark  Mark Henigan --  =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= This message is sent to you
>>because you are subscribed to the mailing list . To unsubscribe, E-mail to:  To switch to the DIGEST mode, E-mail to  To switch to
>>the INDEX mode, E-mail to  Send administrative queries to   To subscribe (new addresses), E-mail to:  and reply to the confirmation
>>email. Web archives are publicly available at: http://lists.2rosenthals.com  This list is hosted by Rosenthal & Rosenthal, LLC P.O.
>>Box 281, Deer Park, NY 11729-0281. Non- electronic communications related to content contained in these messages should be directed
>>to the above address. (CAN-SPAM Act of 2003)  =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=    --  	 Leon
>>Zetekoff Proprietor  	 	 	 Work: 484-335-9920 Mobile: 610-223-8642 Fax: 484-335-9921 	 Email: wa4zlw@arrl.net
>>http://www.linkedin.com/in/leonzetekoff 	 BackWoods Wireless 505 B Main Street Blandon, PA 19510 "Bringing Broadband Technology to
>>Rural Areas"  	See who we know in common 	Want a signature like this?  
>>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= This message is sent to you because you are subscribed to the
>>mailing list . To unsubscribe, E-mail to:  To switch to the DIGEST mode, E-mail to  To switch to the INDEX mode, E-mail to  Send
>>administrative queries to   To subscribe (new addresses), E-mail to:  and reply to the confirmation email. Web archives are
>>publicly available at: http://lists.2rosenthals.com  This list is hosted by Rosenthal & Rosenthal, LLC P.O. Box 281, Deer Park, NY
>>11729-0281. Non- electronic communications related to content contained in these messages should be directed to the above address.
>>(CAN-SPAM Act of 2003)  =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> 
> 
> Doug
> 
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