Grandstream GXW4104 4-Port FXO VoIP Gateway

The Grandstream GXW4104 is a 4-port FXO VoIP gateway designed to connect traditional analog telephone lines (PSTN) to a VoIP network. Ideal for small to medium-sized businesses, it enables seamless communication between legacy phone lines and modern SIP-based systems. With rich telephony features, secure provisioning, and excellent voice quality, the GXW4104 is a reliable solution for hybrid telephony environments.

Key Features:

• 4 FXO ports for connecting analog PSTN lines

• 1 10/100 Mbps Ethernet port for VoIP connectivity

• Supports 2 SIP server profiles and multiple SIP accounts

• Advanced call routing and dial plan support

• Voice codecs supported: G.711, G.723.1, G.729A/B, G.726, iLBC

• Echo cancellation, jitter buffer, voice activity detection (VAD), and comfort noise generation (CNG)

• T.38 Fax-over-IP with fallback support

• Automated provisioning via HTTP, HTTPS, and TFTP

• Secure SIP with TLS and SRTP encryption

• Web-based configuration interface for easy setup and management

• LED indicators for power, network, and line status