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£12.64 + £7.30 UK delivery
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Headset Buddy: IP Headset Adapter for 2.5mm Headset, RJ9/RJ10/RJ22 Headset Plug Adapter (01-PH25-RJ9A)

3.0 out of 5 stars  See all reviews (2 customer reviews) More about this product
Price: £12.64
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In stock.
Dispatched from and sold by Long Tail Products.

Technical Details

  • Convert 2.5mm plug to single 4P4C RJ9/RJ10 headset plug for your VOIP phone
  • Compatible with most IP phone headset jacks: Polycom, Nortel, Avaya, Aastra, ESI, NEC, RCA, Mitel, Lucent, Shoretel, Siemens, and more...
  • Save money by buying standard phone headsets to use with your phone's headset jack
  • Reduce clutter with single headset
  • Does not work with RJ11 jack, which is wider than your handset or headset jack (6 positions vs. 4). RJ11 jack is what is in the wall. RJ9, RJ10, RJ22 are what is on your phone handset or headset.

Special Offers and Product Promotions

  • Save £20 on Amazon.co.uk with the aqua Classic card. Get an initial credit line of £250-£1,200 and build your credit rating. Representative 32.9% APR (variable). Subject to term and conditions. Learn more.

Frequently Bought Together

Headset Buddy: IP Headset Adapter for 2.5mm Headset, RJ9/RJ10/RJ22 Headset Plug Adapter (01-PH25-RJ9A) + Panasonic Hands-Free Headset with Comfort Fit Headband
Price For Both: £22.24

These items are dispatched from and sold by different sellers.

Buy the selected items together


Product details

  • Product Dimensions: 3.1 x 11 x 15 cm
  • Boxed-product Weight: 23 g
  • Item model number: PH25-RJ9A
  • ASIN: B004FVDUAW
  • Date first available at Amazon.co.uk: 23 Aug. 2012
  • Average Customer Review: 3.0 out of 5 stars  See all reviews (2 customer reviews)
  • Amazon Bestsellers Rank:

Product Description

**Works best when combined with an amplifier.

Why buy an expensive headset just for your office IP phone?

Use the Headset Buddy Adapter and your existing 2.5mm phone headset with VOIP phones that have a headset jack.

Save money by using a 2.5mm headset with your phone.

Specs: This amazing adaptor converts the standard phone headset 2.5mm plug to an RJ9, RJ10, or RJ22 headset plug, allowing you to use your favorite 2.5mm headset with your office VOIP phone. EU RoHS Compliant.

Example Compatible Phones:

This list is not all inclusive. Please look up the specifications on your specific phone to see if it has a RJ9, RJ10, or RJ22 headset jack. Please let us know if you find more compatible phones or incompatible phone models.

Aastra/Packet8/8x8
AltiGen IP Phone 500, 510, 600, 705, 710, 720
Avaya 4600 Series IP
ESI 48-Key IP Feature Phone and 48-Key Digital Feature Phone
GE Model 2-9451
Inter-Tel
Lucent 8410D
Mitel IP
NEC Dterm Series E
Norstar T7316E, M3904
Nortel IP
Nortel IP - 1230
Nortel Meridian Norstar Northern Telecom
Panasonic Hybrid
Plantronics T10
Polycom SoundPoint IP Phone
Possum Sero
Shoretel ShorePhone IP models
Siemens
Talkswitch IP Phone, TS-600
Toshiba

Compatible Amplifiers:
Plantronics S-12, M22, A20, MX10, TSB, AP15

Incompatible Phones:
Avaya 2410, 9620L
Nortel 1140T
Nortel Visa 350
Uniden Dect2088, TRU9496
Cisco phones

**Notice: Any duties, taxes, tariffs, etc. are not included in pricing. These charges are assessed by your local government and are the responsibility of the buyer.**

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Customer Questions & Answers

Customer Reviews

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Most Helpful Customer Reviews
5.0 out of 5 stars Good piece of kit 26 Jan. 2014
Verified Purchase
Does what is says on the tin. Would recommend to anyone who has a headset already. Saves buying a new one
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0 of 1 people found the following review helpful
1.0 out of 5 stars One Star 25 Mar. 2015
Verified Purchase
Didn't work
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Most Helpful Customer Reviews on Amazon.com (beta)
Amazon.com: 2.7 out of 5 stars  177 reviews
13 of 14 people found the following review helpful
1.0 out of 5 stars NG in my Avaya / Nortel phone, maybe it will work in your phone 2 Jun. 2012
By darknology - Published on Amazon.com
Verified Purchase
This converter cable does not work on the Avaya (or Nortel) 1120E IP phone. Emails exchanged with Buddy Support (prompt and agreeable) not helpful; they suggest using a different headset and profess no knowledge of this phone. I then examined the wiring: The RJ9 side of this cable has only 3 conductors on it (pin 1 has no connection). Two of the four pins should be tied together to make a common for the ear circuit and the mic circuit. Buddy seems to assume that this would have been done in the phone itself. I'm sure Buddy works in some other phones but not this popular model. Could have bought a useful stack of toilet paper with the $16. Damn!
7 of 7 people found the following review helpful
5.0 out of 5 stars Worked perfectly, right out of the box . . . 13 Sept. 2012
By quietforests - Published on Amazon.com
Verified Purchase
I have a standard Plantronics headset that plugs into the top of any home-quality cordless phone. I needed to use it with my new Aastra 6731i VOIP phone. This little cord worked PERFECTLY, right out of the box. And the sound quality is top-notch.

(For this phone, you do have to turn the microphone gain to the high setting for optimal performance.)
9 of 10 people found the following review helpful
5.0 out of 5 stars This saved the day for me! 14 Nov. 2013
By Valerie Delmotte - Published on Amazon.com
Verified Purchase
I needed a headset to plug into my existing landline desk phone and could not find a headset with a phone jack. This saved the day for me! I am now able to take calls using the new headset; with the end that only plugs into a wireless phone, with this adapter and I have no issues with the plugs coming loose. I love it!
3 of 3 people found the following review helpful
3.0 out of 5 stars Incompatible with Avaya 1600 & 9600 series phones, should be compatible with most other Avaya 5 Mar. 2015
By GadgetGirl - Published on Amazon.com
I'm certain that this product would work fine on most Avaya phones, but the adapter is incompatible with my Avaya 9611 phone. A bit of research reveals that RJ9 jack on my phone and several other Avaya models are wired differently than most Avaya phones. Do NOT expect this product to work on the following incompatible Avaya Phone models: 1608, 1616, 9601, 9608, 9610, 9611, 9611G, 9620, 9621, 9630, 9640, 9641, 9650, 9670. If you go to the manufacturer's website you will notice that the none of the above models are listed in the "known compatibility" list.

If you've got an Avaya 16xx or 96xx phone and are willing to either use a PC headset or purchase a 2.5mm-to-dual-3.5mm adapter in addition, there's an Avaya-brand PC-to-phone headset adapter available on Amazon that IS compatible with Avaya 16xx and 96xx phones. I found it by searching for "avaya 9600 9611 adapter" in All Departments.

My research suggests that this adapter should work just fine for the following Avaya IP Phones: 4606, 4612, 4624, 1408, 1416, 4610, 4620, 4621, 4622, 4625, 4630, 5410, 5420, 5610, 5620, 5621, 9404, 9406, 9408, 9504, 9508 as well as the Avaya phones listed explicitly on the manufacturer's website: Avaya 4600 Series IP – 2420, 4610SW, 4612, 4620SW, 5610SW.

In addition to the above, you can check the manufacturer's pages that list specific phones as incompatible. These pages can be found at:
http://www.headsetbuddy.com/compatibility-list/
Because the lists are all different but the desk-phone jack is the same for all xxxx-RJ9A adapters, you might want to check all three lists for your desk phone's compatibility before buying.
3 of 3 people found the following review helpful
5.0 out of 5 stars Works flawlessly 29 May 2013
By John - Published on Amazon.com
Verified Purchase
This devise plugs into my phone ear plug with microphone. It transforms my head phones into a hand-free headset and plugs right into the phone where the hand set is plugged in.
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