Product Description

The Grandstream GXW4502 Gateway is a professional digital VoIP gateway designed to connect traditional PSTN, ISDN and E1/T1/J1 telephony infrastructure with modern SIP-based communication networks. It is suitable for enterprises, call centers, hotels, educational institutions and organizations migrating from traditional digital telephone systems to IP-based communications.

The Grandstream GXW4502 features 2 software-configurable E1/T1/J1 digital ports and supports up to 60 simultaneous VoIP calls. It enables organizations to integrate existing digital PBX equipment and telecom connections with IP-PBX systems, SIP trunks and unified communication platforms without completely replacing their existing infrastructure.

The gateway supports digital signaling protocols including PRI, SS7 and MFC R2, providing interoperability with different telecommunications networks. Its SIP-based architecture enables reliable communication between legacy digital systems and modern VoIP platforms.

The GXW4502 includes dual Gigabit Ethernet interfaces and supports multiple voice codecs, including G.711, G.722, G.729 and iLBC. Advanced voice-processing capabilities such as echo cancellation, jitter buffering, packet-loss concealment and Voice Activity Detection help maintain clear and consistent call quality.

For secure enterprise communications, the gateway supports TLS and SRTP encryption, HTTPS management and network security controls. It also provides T.38 Fax-over-IP, automated provisioning and a graphical LCD display for convenient device management.

The Grandstream GXW4502 E1/T1 Digital VoIP Gateway is an effective solution for organizations requiring high-capacity PRI-to-SIP connectivity, PSTN-to-VoIP integration and enterprise telephony modernization.

Key Features

• 2 × E1/T1/J1 digital interfaces

• Up to 60 simultaneous VoIP calls

• Software-configurable digital ports

• PRI digital signaling support

• SS7 signaling support

• MFC R2 signaling support

• SIP RFC 3261 compatibility

• Dual Gigabit Ethernet ports

• Integrated NAT routing

• T.38 Fax-over-IP support

• G.711, G.722, G.723.1, G.726, G.729 and iLBC codecs

• G.168 echo cancellation

• Dynamic jitter buffering

• Packet Loss Concealment

• Voice Activity Detection (VAD)

• Comfort Noise Generation (CNG)

• TLS and SRTP security

• HTTPS and SSH management

• Automated HTTP/TFTP provisioning

• Two USB 3.0 ports

• SD card interface

• 128 × 32 graphical LCD

• Rack-mount and desktop installation

• Suitable for PRI-to-SIP and PSTN-to-VoIP integration

GXW4502 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 GXW4502 provides 2 E1/T1/J1 digital 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.