Grandstream GXW4248 V2 FXS Gateway

​The Grandstream GXW4248 v2 is a high-density 48-port FXS VoIP gateway designed to seamlessly integrate analog telephony devices—such as traditional phones and fax machines—into IP-based networks. It’s particularly suitable for businesses aiming to preserve their investment in analog equipment while transitioning to VoIP technology.​

🔧 Key Specifications

Telephony Interfaces

• FXS Ports: 48 ports via 2 × 50-pin RJ21 Telco connectors

• LED Indicators: Per-port LEDs for status monitoring​

Network Interface

• Ethernet Port: 1 × 10/100/1000 Mbps auto-sensing RJ45 port​

Display

• LCD Screen: Backlit 128×32 pixel graphic display supporting multiple languages​

SIP & Voice Features

• SIP Profiles: Supports up to 4 SIP server profiles per system

• SIP Accounts: Independent SIP account per FXS port

• Voice Codecs: G.711 (A-law and μ-law), G.723.1, G.726 (40/32/24/16), G.729 A/B, iLBC, G.722 (wideband), Opus

• Fax Support: T.38 Fax-over-IP and G.711 pass-through

• Echo Cancellation: 128ms-tail-length G.168 line echo cancellation

• Telephony Features: Caller ID, call waiting, call transfer, call forwarding, call hold, do not disturb (DND), 3-way conferencing per port, message waiting indication (MWI)​

Security & Provisioning

• Security Protocols: TLS, SRTP, HTTPS with AES encryption

• Provisioning Options: TR-069 and AES-encrypted XML configuration files

• Additional Security: Secure boot, unique device certificates, and random default passwords​

Power & Environmental

• Power Supply: Input: 100-240V AC, 50/60Hz; Output: 24V DC, 6.25A

• Operating Temperature: 0°C to 45°C

• Humidity: 10% to 90% (non-condensing)​

Physical Dimensions

• Size: Approximately 44mm (H) × 230mm (W) × 160mm (D)

• Weight: Approximately 1.2 kg​

Compliance

• FCC, CE, RCM certifications​

🔑 Key Features

• 48 FXS ports via 2 × 50-pin Telco connectors

• Gigabit Ethernet support for high-speed network connectivity

• Backlit graphic LCD display for easy device management

• Support for multiple SIP server profiles and independent SIP accounts per port

• Advanced telephony features including 3-way conferencing and message waiting indication

• Robust security protocols ensuring secure voice communications

• Automated provisioning for simplified deployment​

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