These GN Netcom cords 8800-01 & 8800-02 work for any of these headsets: GN 2110 ST (DISCONTINUED!) GN 2115 ST (DISCONTINUED!) GN 2117 ST (DISCONTINUED!) GN 2120 NC (DISCONTINUED!) GN 2124 NC (DISCONTINUED!) GN 2125 NC GN 2127 NC (DISCONTINUED!) Note: These headsets normally require an amplifier like the 8000/MPA which uses the GN/CORD to connect them. When using the 8800 cords they can be used as direct connections with certain phone or amplifier models which are listed below. These cords work for these particular amplifiers and phones: Use the GN 8800-01 cord for Phones: Mitel, NEC, Nortel, Lucent, Siemens, Comdial Amplifiers: GN: MPA-II Plantronics: PLX-400 (Discontinued), PLX 500 (Discontinued), Practica™ (Discontinued) , A100 (Discontinued), S10 (Discontinued), SOH 1858-12,SP-02, SP-04, SP-05, T10, T20 Use the GN 8800-02 cord for Phones: Cisco IP, Callmaster 5, Callmaster 6 Amplifiers: Plantronics: A20 (Discontinued), M10 (Discontinued), MX10, M12 (Discontinued), M22, S20 Use the…