Grandstream GXW4224 FXS Analog VoIP Gateway

16/24/32 FXS ports, GXW4248 includes 2 50-pin Telco connectors
1 Gigabit network port
132x48 backlit graphic display with support for multiples languages
4 SIP server profiles per system, independent SIP account per port
Designed and tested for full interoperability with leading IP-PBXs, soft-switches and SIP-based environments
Advanced security protection with SRTP/TLS/HTTPS
Supports 16KHz wide-band voice sampling rate and wide-band codecs such as Opus and G.722
Carrier-grade security features including secure boot, unique certificate and random default password per device, dual firmware images
Supports simultaneous 3-way voice conferencing per port