Introducing the ESG-17xx series Smart Gateway which is an advanced IP-PBX with embedded support for NGN IP-Centrex trunking service lines. ESG-17xx series Smart Gateway is specially suitable for small and medium sizes businesses (SMBs) full IP-based corporate telephony uses.
See the brief introduction slides below:
In additional, reviewing the good of using IP-PBX in geo-distributed multi-site businesses and organizations. And the current best Taiwan-made VoIP product range from Suilah.com here:
ESG-17xx Smart Gateway product brochure can be downloaded from here (pdf, 15MB).
Suilah, that's it.