Ctc Retek is an approved wholesale dealer for refurbished / second hand telecommunication systems for Nortel Norstar. We have in excess of 220 x Nortel Norstar CICS (4 PSTN non-called ID) KSUs with version 4 software. Ex-Australian market, the units are 240 volts and appear to be non-switchable. The above systems are available with: In excess of 2000 x M7310N handsets in GrayIn excess of 1200 x M7208N handsets in GrayAlso we have 50 x Nortel Norstar MICS (8x24) KSUs, with 2x4 PSTN Cards (both non caller ID) . These units are Ex-Australian market; the units are 240 volts. All the goods above have been tested operational on removal from site. Please note that all the above handsets and KSUs have a screen printed logo of our local Telco.