I have recently networked a Definity V11 to a Siemens ISDX over a DPNSS link. I have used the Westell IQ2000 converters on the definity to convert to QSig. Problem I have is that extensions on the Siemens switch which are diverted to mobiles or Vmail do not connect to these endpoints when a call is made from the Definity. If the call is not diverted it will hit the extension on the ISDX. Does the Definity require additonal software switched on for this to work or is this controlled via the converter or ISDX. Any comments welcomed.