Product Description

The Grandstream GXW4104 Analog VoIP Gateway is a professional 4-port FXO gateway designed to connect traditional analog PSTN telephone lines with modern SIP-based IP telephony networks. It is suitable for small and medium businesses, branch offices, hotels, call centers and organizations looking to integrate their existing telephone infrastructure with IP-PBX systems.

The Grandstream GXW4104 features 4 FXO ports, allowing businesses to connect up to four analog PSTN lines to compatible SIP servers and VoIP platforms. It provides a practical solution for organizations that want to retain existing telephone connections while migrating to IP-based communications.

The gateway supports the SIP protocol and offers flexible inbound and outbound call routing, SIP server configuration and compatibility with many IP-PBX platforms, including Asterisk-based systems. It can route incoming calls from traditional telephone lines to IP extensions and outgoing VoIP calls through connected PSTN lines.

For network connectivity, the GXW4104 includes two 10/100 Mbps Ethernet ports. It supports voice codecs including G.711, G.723, G.726, G.729 and iLBC, along with echo cancellation and dynamic jitter buffering to help maintain consistent voice quality.

The device also supports T.38 Fax-over-IP, caller ID detection, DTMF transmission and web-based management. Automated provisioning through HTTP and TFTP helps simplify device deployment and configuration.

With its compact design, reliable analog connectivity and SIP interoperability, the Grandstream GXW4104 4-Port FXO Gateway is suitable for PSTN-to-VoIP integration, legacy telephone system modernization and business communication applications.

Key Features

• 4 FXO analog telephone line ports

• 4 RJ11 PSTN interfaces

• Dual 10/100 Mbps Ethernet ports

• SIP RFC 3261 compatibility

• PSTN-to-VoIP and VoIP-to-PSTN connectivity

• Up to 2 SIP server profiles

• Flexible inbound and outbound call routing

• G.711, G.723, G.726, G.729 and iLBC voice codecs

• T.38 Fax-over-IP support

• G.168 echo cancellation

• Dynamic jitter buffering

• Voice Activity Detection (VAD)

• Comfort Noise Generation (CNG)

• Caller ID detection

• DTMF through in-band, RFC2833 and SIP INFO

• Configurable dial plans

• Web-based configuration and management

• HTTP and TFTP automated provisioning

• Compatible with many SIP-based IP-PBX systems

• Compact desktop and wall-mountable design

GXW4104 pricing and buyer FAQs

Contact Optima Technologies for pricing, availability, warranty and installation requirements in India. Compare our Grandstream gateways and review the official manufacturer documentation.

What ports does this gateway provide?

The GXW4104 provides 4 FXO interfaces. Confirm hardware revision and PBX compatibility before ordering.

What should I confirm before purchase?

Check the exact SKU, firmware, accessories, delivery lead time, warranty and any configuration or support charges.