atcomsystems.ca/forum Forums TDM Business Telephone Systems Samsung Telephones & Systems SPnet Centralized voicemail message waiting indicator not working

I have a 3-OS7200's networked via SPnet with Centralized Voicemail. The Two remote nodes complain the MWI does not work on IP Phones or Analog phones. The voicemail boxes do work normally; just no MWI. Any Thoughts? MWI works correctly on the main node phones where the voicemail resides. Voicemail is SVM-i20i. All systems are using 4.70.