Grandstream GXW4248 48-Port FXS VoIP Gateway

The Grandstream GXW4248 is a full-featured, high-density analog VoIP gateway that provides 48 FXS ports for connecting traditional analog devices to IP-based telephony systems. It is designed for enterprises and service providers that require seamless integration of large volumes of analog equipment into a VoIP environment. Offering carrier-grade voice quality, flexible SIP compatibility, robust security, and advanced provisioning, the GXW4248 is a scalable solution for large deployments.

Key Features:

• 48 FXS ports via Telco connectors for high-volume analog connectivity

• Gigabit Ethernet port for high-speed network integration

• Backlit LCD screen for real-time system display and configuration

• Supports up to 4 SIP server profiles with individual SIP accounts per port

• Audio codecs supported: G.711, G.723.1, G.726, G.729, Opus, G.722, iLBC

• T.38 Fax-over-IP with G.711 fallback ensures reliable fax transmission

• Advanced telephony features: call waiting, call transfer, 3-way conferencing

• Enterprise-grade security: TLS, SRTP, HTTPS, secure boot, and unique certificates

• Zero-touch provisioning via HTTP, HTTPS, TR-069, TFTP, and encrypted XML

• Carrier-level voice enhancements: echo cancellation, jitter buffer, VAD, and PLC

• LED indicators for port and network activity

• 1U rack-mountable chassis, ideal for central installations