Recently we have had several customers order Avaya specific EDAC and Extenders to use with their Nortel PBX’s. Some customers have misunderstood the nature of Avaya’s recent purchase of certain Nortel assets. The MCK product line operates based on the underlying PBX. The fact that Avaya now owns certain of that technology does not change the fact that the underlying technology is Nortel and that the MCK, Nortel specific, products such as the EDAC, the E-1000U series of analog EXTenders and the E-4000 series of Internet based EXTenders rely on that underlying technology. If you do not go with our universal protocols then ensure you buy the Nortel specific devices to use with the pre-existing” Nortel PBXs. If you are not sure what to use, contact Citel directly for more information at sales@citel.com.