Grandstream GXW4248 High-Density Analog VoIP Gateway – 48 FXS Ports

Convert Analog Phones to a High-Density VoIP Network — Grandstream GXW4248

The Grandstream GXW4248 connects up to 48 analog phones or fax machines to a VoIP system or IP PBX, modernizing your communications while keeping your existing analog devices instead of replacing them entirely.

Why Choose the GXW4248?

This gateway offers a high density of FXS ports with an independent SIP account per port and multiple SIP server profiles, plus Gigabit networking and centralized management — ideal for a gradual migration from analog to IP communications.

Key Features

• 48 FXS ports: for connecting analog phones or fax machines.


• 48 SIP accounts: an independent account for each FXS port.


• 4 SIP server profiles: for flexible connection to multiple servers or communication systems.


• Up to 48 concurrent calls: depending on system configuration and codec used.


• Gigabit Ethernet network port: 10/100/1000Mbps.


• 3-way voice conferencing per port.


• Wideband audio: with G.722 support and multiple voice codecs.


• Fax over IP: T.38 support for connecting analog fax machines.


• Communication security: supports SRTP, TLS and HTTPS.


• Centralized setup and management: with secure provisioning options and compatibility with SIP and IP-PBX environments.


• 2 × 50-pin Telco connectors: for high-density FXS port connections.

Key Technical Specifications

• Model: GXW4248


• Type: High-Density FXS VoIP Gateway


• FXS ports: 48


• SIP accounts: 48


• SIP server profiles: 4


• Network: 1 × Gigabit Ethernet


• Concurrent calls: up to 48


• Fax over IP: T.38


• Voice conferencing: 3 parties per port

Ideal For

Hotels, hospitals, large enterprises, compounds and facilities with a large number of analog phones or fax machines that need to connect them to an IP PBX.

Make the most of your existing analog devices and move your communications to VoIP with greater flexibility — order the Grandstream GXW4248 from Catcher.