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