The new GXW400X series boasts excellent audio quality, rich feature capability, robust security protection, good manageability, and a compact, quiet design (no fans). It is scalable, remotely managed, and auto-configurable. The GXW400X has dual 10M/100Mbps network interfaces and a 4 or 8 port FXS interface for analog phones.

featuring an RS232 serial port for administration, an integrated router, and a PSTN life line in the event of a power outage. Three SIP Server profiles, caller ID for different nations and regions, T.38 fax, adaptable dialing plans, security protection (SIPS/TLS), and a complete voice codec set that includes G.711 (a/u-law), G.723.1, G.726 (16/24/32/48 bit rates), G.729A/B/E, and iLBC are also supported.

Grandstream GXW400x Speifications