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#475960 - 02/01/06 12:09 PM RJ9 Handset To 2.5mm Headset Adapter
remp Offline
Junior Member

Registered: 02/01/06
Posts: 1
I need to build an adapter cable with a RJ9 handset plug on one end and a 2.5mm headset plug on the other.

Long story... Our ATT 972's have a 2.5mm headphone jack but the signal is too weak for a mobile phone headset. Ergo, we need to use headsets with amplifiers and they only accept a RJ9 input.

Can someone post wiring diagrams for standard RJ9 handset plugs and 2.5mm headset plugs? With that info, I'll be able to build the adapters.

...thanks

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#475961 - 02/01/06 03:05 PM Re: RJ9 Handset To 2.5mm Headset Adapter
EV607797 Offline
Moderator-Vertical, Vodavi, 1A2, Outside Wire
*****

Registered: 01/21/05
Posts: 14084
Loc: Metropolitan Washington, DC (N...
What's an RJ9? Do you mean a handset cord jack? I have never heard that terminology before, so I don't know how to accurately answer your question.

The policy on this forum is that your profile be completley filled out, so if you would take care of that, you may get a better answer. Welcome aboard!
_________________________
Ed Vaughn
New Phone Systems and Service

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#475962 - 02/01/06 03:50 PM Re: RJ9 Handset To 2.5mm Headset Adapter
JWRacedog Offline
Moderator-Allworx, Nisuko-Tie, Vodavi

Registered: 03/22/01
Posts: 3185
Loc: Rockford, IL USA
I just got done with spending hours & hours to try to adapt an old mod plug headset to a 2.5mm last week. The hours were spent looking at catalogs to find an adapter that would work. Tried a 1 male tail with two females so that you could plug in the headset and the handset. It just didn't work out well at all. Low volume. I'm really down on trying to get headsets for customers. Hours of frustration, and they still don't like what you come up with. Perhaps get a headset with a built in vol control. Perhaps do a google for 2.5mm/adapter/mod plug. Good Luck. Going with amplified headset may cost 3 to 4 times the cost of that phone. Whenever you fight the design or have cheap innards to begin with ---you're fighting a losing battle.
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#475963 - 05/28/06 09:32 AM Re: RJ9 Handset To 2.5mm Headset Adapter
Lightninghorse Offline
Moderator-Mitel, Panasonic
*****

Registered: 12/20/05
Posts: 6264
Loc: Fayetteville, NC
I'm with JWR. I hate headsets. Customer wants to 'try it out'. Let's take a poll, how many of you have 'trial' headsets you can't legitamently sell 'cause they're used and refurb cost can't be justified. Gotta say we have been successful with Plantronics CS50. Make up our own adapter cables for 76XX Panasonic. Our sales spiel is we have them, you pick them up at our store. Warranty issues direct w/manufacturer. (We test them before they leave the store.) 50% restock charge.
It works! And no more headaches. Our attitude is, "We know the headset works, but will you work with the headset!" John
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When I was young, I was Liberal. As I aged and wised up, I became Conservative. Now that I'm old, I have settled on Curmudgeon.

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#475964 - 01/17/08 08:23 AM Re: RJ9 Handset To 2.5mm Headset Adapter
tploy Offline
Junior Member

Registered: 01/17/08
Posts: 3
Loc: michigan
I don't know if this is what you are looking for but I found a headset amplifier with both handset and headset connections at: http://www.radioshack.com/product/index....rentPage=search
I hope this may be helpful or not.

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#475965 - 01/17/08 09:12 AM Re: RJ9 Handset To 2.5mm Headset Adapter
George Ferguson Offline
Member

Registered: 09/12/07
Posts: 360
Loc: West Monroe, LA.
You can have your customer contact "Hello Direct" they sell headsets for just about anything and if they don't work or the customer just doesn't want it they can send it back for a full refund. their number is 1-800 hi hello
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Independent Telecommunications Services
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#475966 - 02/09/08 03:07 AM Re: RJ9 Handset To 2.5mm Headset Adapter
Toshiba Bob Online   content
Member

Registered: 02/24/05
Posts: 915
Loc: Stow, Ohio
2.5 mm headsets
Much easier way to go!

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#475967 - 08/28/09 01:41 AM Re: RJ9 Handset To 2.5mm Headset Adapter
techmanJed Offline
Junior Member

Registered: 08/28/09
Posts: 1
Loc: California
lol... You DON'T KNOW WHAT AN RJ9 CONNECTOR IS???!!!

HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA!!!!!!!
_________________________
If ya don't know what an RJ9 is, go back to your old job at McDonald's.

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#475968 - 08/28/09 07:46 AM Re: RJ9 Handset To 2.5mm Headset Adapter
EV607797 Offline
Moderator-Vertical, Vodavi, 1A2, Outside Wire
*****

Registered: 01/21/05
Posts: 14084
Loc: Metropolitan Washington, DC (N...
Hello, Mr. TechmanJed:

The Universal Service Order Code (USOC) was developed between the Bell System and the FCC as a uniform standard for ordering network connection jacks. These registered jacks (RJs) were devised so that a customer could order their service from any telephone company in the country and be assured of receiving the exact same thing. For example, an RJ11 is a single CO line appearing on pins 3/4 of a 6P4C modular jack, an RJ21X is a block containing up to 25 CO lines, etc.

There never was an RJ9, RJ10 or RJ22 handset connection developed under this program. USOC "RJ" designations are wiring patterns upon different types of jacks, not specific pieces of hardware. Additionally, any "RJ" designation ends at the wall. No component of a telephone set has an "RJ" designation, period.

The fact that you and yours have developed your own home-grown connector terminology is all well and good, but don't come here with the intention of insulting others with your inaccurate information. I challenge you to take a handset cord from a Toshiba phone and plug it into the handset of an AT&T Trimline phone and expect it to work. This little test itself should prove that there is no uniform standard in handset jack wiring.

From another forum:

RJ-numbers are well defined standards in a telco environment. It describes signal names and wires used on several plugs/jacks. So using the name RJxx in a data network or other non-telco environment is misleading. It is about the same common error like using RS232 for a DB25 or DB9 connector. As a wiki article has stated, handset leads and the like have no RJ-- definition, being a part of an appliance, not of the network itself. There is no official standard for this type of connections, nor can there be, so 4p4c is the best you can name it. At the same time you'd better be aware that not all manufacturers use the same pin out.

HERE IS SOME ADDITIONAL SUPPORTING INFORMATION

Oh, and Mr. TechmanJed, I'd think twice about coming here, dragging up a thread that started 3.5 years ago and slinging insults at senior management of this forum in the future.
_________________________
Ed Vaughn
New Phone Systems and Service

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#475969 - 08/28/09 09:43 AM Re: RJ9 Handset To 2.5mm Headset Adapter
MarcHaycook Offline
Member

Registered: 05/13/07
Posts: 1195
Quote:
Originally posted by EV607797:
Oh, and Mr. TechmanJed, I'd think twice about coming here, dragging up a thread that started 3.5 years ago and slinging insults at senior management of this forum in the future.
Ed,

I agree!

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#475970 - 08/28/09 10:02 AM Re: RJ9 Handset To 2.5mm Headset Adapter
Steve Mull Online   content
Member
*****

Registered: 01/20/06
Posts: 2151
Loc: Knoxville Tennessee
:bow: :bow:

RJ9 those are on the menu at McDonalds ?

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#475971 - 08/29/09 09:50 AM Re: RJ9 Handset To 2.5mm Headset Adapter
Fletcher Offline
Member

Registered: 11/22/08
Posts: 622
Loc: Williamsburg, Va.
Quote:
Originally posted by Steve Mull:
:bow: :bow:

RJ9 those are on the menu at McDonalds ?
They are the toy in the Happy Meal, of which tmj seems to be a few fries short.

Jack
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#475972 - 08/29/09 12:19 PM Re: RJ9 Handset To 2.5mm Headset Adapter
Jim Baldwin Online   content
Member

Registered: 12/08/07
Posts: 894
Loc: West Covina California
Ha he list himself as a phone system tech not a TELEPHONE TECH so what did you all expect? :confused: :confused:

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#475973 - 08/29/09 12:49 PM Re: RJ9 Handset To 2.5mm Headset Adapter
MooreTel Online   content
Moderator-Nortel, Computers, General
*****

Registered: 06/17/06
Posts: 7967
Loc: Lennoxville, Quebec, Canada
I sure hope he does a whole lot better with system terminology than he does with the telephone itself... laugh
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#475974 - 05/31/11 07:14 PM Re: RJ9 Handset To 2.5mm Headset Adapter
Tom Lake Offline
Junior Member

Registered: 05/31/11
Posts: 1
Loc: Rusk, Texas
i THINK i KNOW WHAT IS WANTED, BECAUSE i HAVE BEEN SEARCHING FOR A way to replace one end of the telephone handset cord with 3.5 mm jacks I found the information needed to do that here:http://www.einhorn-net.de/headset/index_e.html II modified the instructions to actually solder jacks on the handset instead of making the "jack box".

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#475975 - 06/02/11 12:50 PM Re: RJ9 Handset To 2.5mm Headset Adapter
Professor Shadow Online   content
Moderator Sprint-Tadiran
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Registered: 12/16/07
Posts: 1739
Loc: Canby, Oregon
From 2006?
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Dean

I miss being able to slam my phone down when I hang up on someone...

Violently pressing "End Call" just doesn't do it for me!

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