Convert 2.5mm headset plug to single 4P4C RJ9/RJ10 plug for your VOIP phone
Compatible with most IP phone headset jacks: Nortel, Avaya, Aastra, ESI, NEC, RCA, Mitel, Lucent, Shoretel, Siemens, and more...
Save money by buying standard phone...
01-PH25-RJ9