Grandstream UCM6308 IP PBX

The Grandstream UCM6308 IP PBX Is a High-Capacity Unified Communications Solution Designed for Medium to Large Enterprises. It Seamlessly Merges Voice, Video, Surveillance, Web Meetings, Data, Mobility, and Facility Access Into a Single Platform. Supporting Up to 3000 Users and 450 Concurrent Calls, the UCM6308 Delivers a Powerful Communication Hub With SIP Interoperability, Built-In Conferencing, Remote Access via Wave App, and Secure Cloud-Based Management. With 8 FXO and 8 FXS Ports, This Device Is Ideal for Offices Requiring Flexible Hybrid Connectivity and Maximum Scalability.

Product Features

High Performance And Stability
Equipped With a Distributed Architecture and Integrated Media Resource Card, the UCM6308 Supports Load Balancing, Fast Concurrent Call Processing, and Advanced System Reliability for Seamless Communication.

Supports Power Over Ethernet
The Device Features Three Self-Adaptive Gigabit Ports With Integrated PoE+, Enabling Easy Installation and Remote Management Capabilities Including Provisioning and Monitoring.

Cloud Management
Compatible With Grandstream’s GDMS Platform, the UCM6308 Supports Remote Configuration, Backup, Monitoring, and Firmware Updates. It’s Ideal for Multi-Site Deployments and Centralized IT Management.

Flexible Deployment, Easy Operation And Maintenance
Offers Centralized Single-Site or Distributed Multi-Site Deployment Options. The Intuitive Web Interface Simplifies Setup Without the Need for Technical Expertise.

Supports 8 FXO Ports And 8 FXS Ports
Includes 8 PSTN (FXO) Ports and 8 Analog Phone (FXS) Ports With Lifeline Capability. Supports Up to 3000 SIP Devices and 450 Concurrent Calls, Making It Ideal for High-Demand Offices.

Automated Provisioning via TFTP/HTTP/HTTPS
Auto-Provisioning and ZeroConfig Enable Rapid, Hands-Free Setup of Grandstream IP Phones and Endpoints Using Standard Protocols.

Rich QoS Capabilities
Layer 2 and 3 Quality of Service Settings Prioritize Critical VoIP Traffic, Ensuring Stable, High-Quality Communications Even in Congested Networks.

Excellent Audio Quality
Advanced Voice Technologies Including Echo Cancellation, Adaptive Jitter Buffer, Voice Activity Detection, Comfort Noise, and Opus Codec Provide HD Voice Quality With Packet Loss Tolerance Up to 50%.

SIP-Based Connections
Built on SIP Protocol, the UCM6308 Is Fully Compatible With Popular Platforms Like Cisco CUCM, Broadsoft, Microsoft Skype for Business, Huawei IMS, Asterisk, and Elastix.

Firmware Upgradeable
Regular Firmware Updates via GDMS or Local Interface Improve Security, Fix Bugs, and Add New Features. Easily Manageable via the Web UI.

Call Features

• Call Transfer: Redirect Incoming Calls to Another Extension or Device
• Call Waiting: Notify of a Second Call While Already Engaged
• Call Holding: Temporarily Suspend a Call to Handle Another
• Call Recording: Integrated Recording Tools for Quality and Compliance
• Wave App: Enables Remote Meetings and Communication via Android, iOS, Chrome, or Firefox

Product Specifications

• Analog Telephone FXS Ports: 8 RJ11 Ports With Lifeline Support
• PSTN Line FXO Ports: 8 RJ11 Ports With Lifeline Support
• Network Interfaces: 3 x Gigabit Ports With PoE+ (Switched, Routed, or Dual Mode)
• NAT Router: Supports Router and Switch Modes
• Peripheral Ports: 2 x USB 3.0, 1 x SD Card Slot
• LED Indicators: Power, FXS, FXO, LAN, WAN, Heartbeat
• LCD Display: 128×32 Dot Matrix Graphic With Navigation Buttons
• Reset Switch: Long Press for Factory Reset, Short Press for Reboot

Voice-Over-Packet Capabilities

• LEC With NLP
• 128ms Carrier-Grade Echo Cancellation
• Dynamic Jitter Buffer
• NetEQ, FEC 2.0
• Jitter Resilience: Up to 50% Audio Packet Loss
• Modem Auto-Switch to G.711

Voice and Fax Codecs

• Opus, G.711 A/U-Law, G.722, G.722.1, G.722.1C, G.723.1, G.726-32, G.729A/B, iLBC, GSM
• Fax: T.38

Video Codecs

• H.264, H.263, H.263+, H.265, VP8

QoS Support

• Layer 2: 802.1Q, 802.1p
• Layer 3: ToS, DiffServ, MPLS

API

• Full API Support for CRM, PMS, and 3rd-Party Integrations

Operating System

• Based on Asterisk Version 16

DTMF Methods

• In-Band, RFC2833, SIP INFO

Provisioning Protocols

• AES-Encrypted XML Config
• ZeroConfig Auto-Discovery
• SIP SUBSCRIBE, DHCP Option 66, mDNS

Network Protocols

• TCP/UDP/IP, RTP/RTCP, ICMP, ARP, DNS, DDNS, DHCP, NTP, TFTP, SSH, HTTP/HTTPS, PPPoE, STUN, SRTP, TLS, LDAP, HDLC, PPP, IPv6, OpenVPN

Disconnect Methods

• Busy Tone, Polarity Reversal, Hook Flash, Loop Current Disconnect

Media Encryption

• SRTP, TLS, HTTPS, SSH, 802.1X

Power Supply

• Input: 100~240VAC, 50/60Hz
• Output: DC 12V, 2A
• Dual DC Inputs

Dimensions

• 485mm (L) x 187.2mm (W) x 46.2mm (H)

Weight

• Unit: 2550g
• Packaged: 3320g