Cisco iPhone Headset Adapter facilitates easy connection between a single-plug iPhone, Blackberry, HTC or other smartphone headset, and Cisco Unified IP phone. This cord fits selected Cisco 7900, 6900 and 9900-series phones. It is not compatible with Cisco SPA500 phones or other brand phones.
Compatibility
Cisco iPhone Headset Adapters compatible with the following Cisco IP Phones:
Cisco 79xx-series:
7940G, 7960G, 7970G
7941G, 7961G, 7971G
7942G, 7962G
7945G, 7965G, 7975G
Cisco 9900-Serites:
9951, 9971 Cisco Unified IP phones
Headsets:
iPhone / Blackberry / Smartphone headset
with single 3.5mm plug
(see picture for references)
Specification
Cable / Length: 3 feet
Phone Plug: RJ-9 modular plug (same size as a handset cable connector)
Headset Plug: single 3.5mm 4-conductors plug