- OBi1000 Series IP Phones - 5.0
- OBi1000 Series IP Phones - 5.1
Well it turns out that the the 5.1.x firmware release train for the OBi1000 series IP Phone adds support for OBiTALK Device Management Platform (DMP) “Premium (beta)” features. So unless you're a VoIP service provider with access to the OBiTALK DMP Cloud Management there is no reason why you would want or need the 5.1.x firmware variant.
For more information about OBiTALK DMP Cloud Management, see: http://www.obihai.com/docs/OBiTALK-DMP-FAQ.pdf