Mitel Voice Channel Booster Card OCCBH (3 DSP)

For Mitel MiVoice Business environments where voice processing capacity is the bottleneck, the UNIFY L30251-U600-A934 Voice Channel Booster Card OCCBH (3 DSP) delivers a dedicated hardware upgrade that offloads real-time audio tasks from the main controller. This internal expansion card integrates three Digital Signal Processors (DSPs) to dynamically allocate resources across IP phones, SIP trunks, conferencing, and voicemail ports—ensuring consistent call quality even under peak load. Unlike software-only solutions that compete for CPU cycles, this card provides deterministic performance for G.711, G.729a/b, and G.723.1 codecs, making it a strategic investment for growing unified communications deployments.

Highlights

• Three dedicated DSPs for scalable voice processing
• Plugs directly into compatible Mitel MiVoice Business controller chassis
• Supports IP phones, IP trunks, conferencing, and voicemail ports
• Dynamic resource allocation for optimal call quality
• LED status indicators for quick operational checks
• Operates in standard office environments (0°C to 40°C, 10-90% RH non-condensing)

In daily use

Installed in a compatible Mitel controller, the OCCBH card immediately expands the system's voice processing headroom. Administrators can add more IP endpoints, enable additional conferencing sessions, or increase SIP trunk capacity without replacing the entire platform. The card's hardware-based DSP architecture ensures that transcoding and echo cancellation do not degrade call quality during high concurrency. Because it draws power from the host chassis and requires no external cabling, deployment is straightforward—simply insert the card into an available slot and verify the LED indicators. The card supports Mitel's dynamic resource management, automatically balancing DSP load across active calls and features.

Full specifications

• Product type: Voice Channel Booster Card
• Number of DSPs: 3
• DSP type: Digital Signal Processor
• Compatibility: Mitel MiVoice Business (formerly 3300 ICP) Controllers
• Function: Provides voice processing resources for IP telephony
• Applications: IP phones, IP trunks, conferencing, voicemail ports
• Codec support: G.711, G.729a/b, G.723.1
• Form factor: Internal expansion card
• Installation: Plugs into compatible Mitel controller chassis slot
• Mitel part number: 50006301
• System enhancement: Increases system capacity for voice processing
• Resource management: Dynamically allocates DSP resources
• Scalability: Enables modular system expansion
• Technology: IP-PBX / Unified Communications
• Operating temperature: 0°C to 40°C (32°F to 104°F)
• Operating humidity: 10% to 90% non-condensing
• Power source: Internal (from host chassis)
• Status indicators: LEDs for operational status
• Architecture: Dedicated hardware for voice processing

Final note

This booster card is the practical choice for Mitel deployments that need extra voice processing power without a full system overhaul. Its three DSPs and dynamic allocation keep call quality high as your organization grows.