SMITON Small Size Plug 0.6ft Black RJ9 Splitter Telephone Training Adapter to 4P4C Plug Connections， not for RJ11 / RJ12

Telephone Training Adapter Y Splitter+Mute Button for Headset for Nortel Meridican, Norstar, Avaya, Ashtra, Mitel, Polycom, Ge and Other Ip Phone

Telephone Training Adapter Y Splitter for Headset or Handset for Nortel Meridican, Norstar, Avaya, Ashtra, Mitel, Polycom, Ge and Other Ip Phone

Newtech Telephone Training Adapter Y Splitter for Corded Handset

ZFKJERS Telephone Training Adapter Headset Splitter for Nortel Meridican, Norstar, Avaya, Ashtra, Mitel, Polycom, Ge and Other Ip Phone

RJ9 4P4C Telephone Handset Cord Plugs (12 Pack)

Audicom Telephone Training Adapter Y Splitter with RJ9/RJ12 Plug Connections for Corded Headset or Handset for Cisco Unified Telephone IP Phones 7931G 7940 and Plantronics MX10 Vista Modular Adapters

Two Way Telephone Splitters,Uvital Male to 2 Female Converter Cable RJ11 6P4C Telephone Wall Adaptor and Separator for Landline(White,2 Pack)

OvisLink Call Center Headset Training Adapter

TruVoice Agent Buddy Box Universal Headset or Handset Training Solution with Mute

Telephone Phone Handset Cable Cord,Uvital Coiled Length 1.2 to 10 Feet Uncoiled Landline Phone Handset Cable Cord RJ9/RJ10/RJ22 4P4C(Black,2 PCS)