The Inter-Tel 580.1001 DEI is an expansion unit for the Inter-Tel 5000 system, Mitel MiVoice system, or Mitel HX5000 system. The 580.1001 expansion unit has three slots in the rear that allows you to add the DEM-16 or SLM-8 modules. Some of the chassis are blue and some are black however the part numbers are the same.
Inter-Tel DEI 5000 Expansion Unit 580.1001
- Power Cord