Item Description
The Cell Phone 2.5mm headset to RJ-9 modular plug Headset Adapter is for use with any Cisco Headset-capable IP phone (Cisco 79xx, 69xx or 89xx-series phones). It should be compatible with most cell phone headsets that are equipped with a 2.5mm audio plug.
Phone
Cisco 79xx-series IP phones (excluding 792x WiFi and 791x budget phones)
Cisco 69xx-series IP phones (except 6901 and 6911)
Cisco 89xx-series IP phones (all models)
Cisco 99xx-series IP phones (all models)
*** These adapters not compatible with Linksys SPA phones ***
Headset
Older cell phone headsets with 2.5mm plug (not iPhone / smartphone 3.5mm headsets)
Specification
Cable / Length: Straight cable / 3 feet
Phone Plug: RJ-9 modular plug (same size as a handset cable connector)
Headset Plug: 2.5mm 3-conductors single plug (see picture for references)
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