SmartNode 4520 is a VoIP gateway which unifies in itself a fully finished corporate router with multifunctional IP telephony gateway, the device offers new standards of communication cost reduction, possibility of connection of remote office with the main office and providing enhanced services of telephone operator. SmartNode 4520 is a perfect solution for a remote office, extension of main office PBX or switch, this VoIP gateway unifies all your voice and faxing traffic with data transfer.
Netropolitan Works builds secure VOIP in Thailand Asterisk systems and can do it in a way that makes sense for your business! http://www.NetropolitanWorks.com/VOIP-Thailand-lp.html