PH35-RJ9s - 3.5mm Smartphone Headset to ShoreTel, Polycom RJ9 Phone Adapter

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This 3.5 mm to RJ9 adapter allows you to use your CTIA based / iPhone headphones with Shortel, Polycom and other VoIP office phones.
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Product Overview

  • Compatible with Apple EarPod and other Apple / CTIA based headphones or headsets. 
  • Convert 3.5mm Smartphone plug to single 4P4C RJ9/RJ10 handset plug.
  • Save money by buying a smartphone headset, or using your existing one with your Aastra, Shoretel, Polycom office phone head set jack.
  • 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.
  • New and improved male RJ plug with increased durability to reduce fraying
  • Please check our compatibility list before ordering.

This adaptor converts the standard 3.5mm smartphone headset plug to an Shortel and Polycom RJ9, RJ10, or RJ22 handset plug, allowing you to use your favorite smartphone headset with your newer VoIP office phones. The adapter outputs binaural sound for stereo headsets, meaning you will hear sound out of both ears. The adapter cable is approximately five inches long.

**Works best when paired with an amplifier**



All Headset Buddy products have a 1 year warranty! 

For further information about Headset Buddy's Warranty and Shipping & Returns policies select the imbedded links

Warranty Information

*For optimal use, please plug into the headset jack on your phone. The handset jack usually causes audio distortion

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. If the Headset Buddy doesn't work with a model on this list we will be happy to refund 100% of your purchase plus pay for return shipping.

Incompatible phones

Unknown at this time

Compatible Phones

Aastra 6731i, 6735i, 6737i, 7446i, 9112i, 9133i, 9116, 9143i and 9480i

Altigen AT-500, AT-510, IP-600, IP-705, IP-710, IP-720

Cisco E20 video phone

Comdial 8312 and 8412

Digium D40, D45, D50 and D70

Nortel i2002 (NTDU91), i2004 (NTDU92), i2007 (NTDU96)

Polycom IP 300, 301, 335, 430, 450, 500, 501, 550, 560, 600, 601, 650, 670, CX200, CX300, CX500, CX600, CX700, VVX300, VVX310, VVX 400, VVX410, VVX500, VVX600 and VVX1500

Starleaf 2210

Shoretel 420, 480, 480G and 485

Please let us know if you find more incompatible or compatible phone models.

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