Grandstream UCM6302 IP PBX

The Grandstream UCM6302 IP PBX is an advanced unified communications system designed for small to mid-sized businesses seeking to streamline voice, video, messaging, and conferencing over a single secure platform. Supporting up to 1000 users and 150 concurrent calls, the UCM6302 is ideal for companies requiring a compact yet powerful PBX solution with both analog and SIP connectivity. It features 2 FXO and 2 FXS ports, an intuitive color touchscreen LCD, and full compatibility with Grandstream’s UCM ecosystem including the Wave app and RemoteConnect for secure cloud access and collaboration.

Product Features

Unified communication platform
Brings together voice, video calling, conferencing, surveillance, IM, intercom, and access control in one powerful on-premise system with hybrid cloud support.

Flexible conferencing & collaboration
Supports 3 video conference rooms with up to 20 participants and 150-party voice conferencing, accessible via mobile devices, IP phones, GVC endpoints, or desktop browsers.

Hybrid deployment & cloud control
Works seamlessly with UCM RemoteConnect for secure NAT traversal and GDMS for remote provisioning, updates, and real-time monitoring.

Touchscreen LCD interface
Features a 320×240 color LCD touchscreen with shortcut keys for intuitive navigation and system access.

PoE-enabled gigabit connectivity
Three auto-sensing Gigabit ports with PoE+ for fast networking and simplified power/cabling infrastructure.

Reliable analog & VoIP integration
Includes 2 FXO ports for PSTN lines and 2 FXS ports for analog phone support, all with lifeline capability during power failures.

Secure & robust telephony
Advanced encryption protocols (TLS, SRTP), secure boot, unique device certificates, and randomized default passwords protect user data and system integrity.

Broad compatibility & integration
Supports third-party CRM/PMS platforms via API, as well as most SIP-based platforms including Cisco CUCM, Microsoft Skype for Business, BroadSoft, and Asterisk-based systems.

Product Specifications

• Maximum users: 1000
• Concurrent calls: 150 (100 SRTP max)
• FXO ports: 2 RJ11 (with lifeline support)
• FXS ports: 2 RJ11 (with lifeline support)
• Network interfaces: 3 x Gigabit RJ45 (PoE+, routed/switched/dual mode)
• Peripheral ports: 1 x USB 3.0, 1 x USB 2.0, 1 x SD card
• Display: 320×240 color touchscreen with scroll and shortcut keys
• Reset switch: Yes (short for reboot, long for factory reset)
• Video conferencing: 3 rooms, up to 20 participants (1080p)
• Voice conferencing: Up to 150 participants (G.711)
• Audio codecs: Opus, G.711, G.722, G.729A/B, G.726, G.723.1, GSM, iLBC
• Video codecs: H.264, H.263/+, H.265, VP8
• Echo cancellation & jitter buffer: LEC/NLP, adaptive jitter buffer, NetEQ, FEC 2.0
• QoS support: 802.1Q/p, ToS, DiffServ, MPLS
• Telephony OS: Based on Asterisk version 16
• Provisioning: ZeroConfig, AES-encrypted XML, HTTP/HTTPS/TFTP, DHCP Option 66
• Encryption: SRTP, TLS, HTTPS, SSH, 802.1X
• Network protocols: TCP, UDP, RTP, DNS, DHCP, PPPoE, OpenVPN, IPv6, LDAP, STUN
• Power: 100–240V AC input, 12V DC output (1.5A)
• Dimensions: 270mm x 175mm x 36mm
• Weight: 725g (unit), 1221g (packaged)
• Mounting: Wall mount & desktop
• Multi-language support: UI and IVR in English, Spanish, French, Chinese, Arabic, and more
• Auto-attendant (IVR): Up to 5 layers, customizable in multiple languages
• Call features: Call park, forward, transfer, call queues, paging, intercom, DND, voicemail-to-email, call history, fax-to-email, DID, SCA, BLF, blacklists, call pickup, wakeup, emergency calling, ring groups, and more
• Wave app support: iOS, Android, Chrome, and Firefox compatible

Ideal for organizations needing:

• A cost-effective IP PBX with full analog-digital integration
• Unified communications with video/web conferencing
• Remote management and deployment via cloud (GDMS, RemoteConnect)
• Strong security and customizable call flows