YateBTS 3.0 is Here!

YateBTS 3.0 is here.  We (Legba and SS7Ware) are a little off of our original one-release-per-month schedule, but not by much.

The two big new features in YateBTS 3.0 are

• support for the Nuand BladeRF and 
• compatibility with SS7Ware OpenVoLTE.

The cooperation with Nuand has been very rewarding; the BladeRF offers a very affordable platform for experimenters and students to work with YateBTS. The OpenVoLTE support, however, represents a fundamental shift in the capabilities of open source mobile networks.

OpenVoLTE was designed to provide VoLTE service in a IMS 4G core network, but it also can act as an MSC/VLR for the 2G YateBTS. OpenVoLTE can talk SS7 to a legacy HLR or talk DIAMETER to a new-generation HSS. This means that OpenVoLTE allows us to integrate YateBTS directly into existing SS7 infrastructure, something that has been a significant roadblock for similar RAN implementations. This capability is not hypothetical; it has been demonstrated using the same  HLR that is used by SS7Ware's MVNO customers in production networks. And since OpenVoLTE is an IMS system anyway, it will allows operators to build mixed 2G/4G networks using a combination of YateBTS and standard eNodeBs, what we call a unified core network.

The short of it is that with OpenVoLTE, YateBTS is compatible with nearly all existing and foreseeable mobile operator core networks.  For me, this represents a huge milestone for what started as OpenBTS, a possibility that has existed for a long time but has only now been realized. More importantly, it gives operators the chance to lower costs by using 2G in those places where it is an appropriate choice, even after the shift to IMS core networks. I hope to address the importance of that  capability in a future post. Until then, get a Lab Kit and have fun playing with YateBTS 3.0.