Grandstream UCM6302A IP PBX (Audio Only)

Grandstream UCM6302A IP PBX Audio Only is a scalable unified communication platform designed for businesses that require reliable VoIP telephony, audio conferencing, SIP trunking, and hybrid communication management. Built for medium-sized organizations, this advanced IP PBX supports up to 500 users and 75 concurrent calls while integrating voice communication, instant messaging, remote collaboration, and mobility into a centralized system. With built-in FXS and FXO ports, cloud management compatibility, enterprise-grade security, and support for remote access through the Wave application, the UCM6302A delivers a powerful on-premise business communication solution with modern remote connectivity capabilities.

Product Features

Supports Up to 500 Users and 75 Concurrent Calls

The UCM6302A is designed for growing businesses and branch offices, supporting up to 500 registered SIP users and 75 simultaneous calls for dependable communication scalability.

Integrated FXS and FXO Analog Interfaces

Equipped with 2 FXS ports and 2 FXO ports, the system supports analog phones and PSTN lines, allowing businesses to integrate traditional telephony infrastructure with modern VoIP environments.

Unified Communication and Collaboration Platform

The platform combines VoIP calling, instant messaging, mobility services, remote collaboration, and audio conferencing into a centralized communication ecosystem.

Built-In Audio Conferencing and Web Meeting Support

The PBX includes integrated conferencing tools that support multiple conference rooms and remote participation through desktop, mobile, and SIP endpoints.

Wave App for Remote Business Communication

Grandstream Wave applications enable users to make and receive calls, participate in meetings, and communicate remotely using Windows, macOS, Android, iOS, and web platforms.

Advanced Enterprise Security Protection

The UCM6302A includes secure boot, TLS and SRTP encryption, unique security certificates, and randomized default passwords to help secure calls and business communication data.

Gigabit Network Connectivity with PoE+

Three Gigabit Ethernet ports with integrated PoE+ support provide flexible deployment and high-speed networking for business communication infrastructure.

Zero-Touch Provisioning and Cloud Management

The system supports automatic provisioning of Grandstream SIP devices and centralized management through Grandstream Device Management System (GDMS).

Asterisk-Based Open Telephony Platform

Built on the Asterisk version 16 telephony framework, the UCM6302A supports SIP interoperability, third-party integrations, and flexible VoIP deployment scenarios.

High Availability and Remote Connectivity Support

The PBX supports remote access through UCM RemoteConnect and includes high-availability features for improved communication reliability in business environments.

Product Specifications

• Product Name: Grandstream UCM6302A IP PBX Audio Only
• Model: UCM6302A
• System Type: Unified IP PBX Appliance
• Communication Type: Audio-only unified communication platform
• Supported Users: Up to 500 users
• Concurrent Calls: Up to 75 simultaneous calls
• Conference Capacity: Up to 75 conference participants
• FXS Ports:
  • 2 x RJ11 FXS ports
• FXO Ports:
  • 2 x RJ11 FXO ports
• Network Interfaces:
  • 3 x Gigabit auto-sensing Ethernet ports
• PoE Support: Integrated PoE+
• NAT Router Support: Yes
• USB Interfaces:
  • 1 x USB 2.0
  • 1 x USB 3.0
• Storage Expansion:
  • SD card interface
• Display:
  • 320 x 240 color LCD touchscreen
• Supported Audio Codecs:
  • Opus
  • G.711 A-law/U-law
  • G.722
  • G.729
  • G.723
  • iLBC
  • GSM
• Fax Support:
  • T.38 fax
• Security Features:
  • Secure boot
  • TLS encryption
  • SRTP encryption
  • HTTPS and SSH support
  • Randomized default password
  • Unique certificates
• Remote Access Support:
  • UCM RemoteConnect
  • GDMS cloud management
• Provisioning Support:
  • Zero-touch provisioning
  • Auto-discovery for SIP endpoints
• QoS Support:
  • Layer 2 QoS (802.1Q, 802.1p)
  • Layer 3 QoS (ToS, DiffServ, MPLS)
• Telephony Platform:
  • Asterisk version 16
• Supported Platforms:
  • Windows
  • macOS
  • Android
  • iOS
  • Web browsers
• Third-Party Integration:
  • CRM integration
  • PMS integration
  • API support
• Power Input:
  • 100–240V AC
  • 12V DC adapter
• Dimensions:
  • 270 mm x 175 mm x 36 mm
• Mounting Options:
  • Desktop
  • Wall mount
• Color: Black