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.
Provide wholesale international callback service in China for voip service providers and call shops. We offer competitive price and billing system to our wholeseller. We are using SS7 PSTN line and no connection fee to customers.