Voice and video communication will be all IP based in the near future. IP based communication has many advantages, free, roaming ,
no distance limitation,so it can make communication cost down dramatically, and people can communicate every where and on any devices.
It supports 500 extensions and cost freely within the same group. Multi-Domain IPPBX, one untis for several customers
Basic IPBX functions：
Group、Router、IVR、Voicemail、Fax、FlowMe、Recording、Forwarder、Conference、Billing、Voice mail、BLF、White and Black List
Performance and reliability：
It supports 512 SIP accounts and 256 calls simultaneously. When testing in Cisco VoIP lab, it passed 20 billions calls but zero call lost test.