Release notes
Changes in 1.9 version
Yeti now can act as Registrar server and terminate calls to remote gateways with dynamic IP address
Table partitioning mechanism was changed to native Postgresql partitioning(New partitioning mechanism was implemented in Postgresql 10)
Admin API for Active Calls
New numberlist matching mode - Random
Additional CDR fields - legb_ruri and legb_outbound_proxy
Support of Debian 8 Jessie was removed