Nortel NTRB34AA Core-to-Network Interface CNI3 Card

Overview
The Nortel NTRB34AA Core-to-Network Interface (CNI3) Card provides a reliable bridge between a Nortel core switching system and external network resources. Designed for high-density telephony environments, this card delivers low latency, high throughput and robust signaling support. It is an essential component for enterprises and service providers that need to extend their Nortel core capabilities to additional trunks, gateways or data networks while maintaining seamless call processing and management.

Key Features

• Supports up to 48 DS0 channels per card for flexible capacity planning
• Integrated support for ISDN PRI, CAS and analog voice interfaces
• High-speed backplane interface with 2.5 Gbps bandwidth per slot
• Advanced error detection and correction to ensure call quality
• Hot-swap capable for zero-downtime maintenance
• Compatible with Nortel DMS-100, DMS-200 and other core platforms

Technical Specifications

• Form factor: 3U full height, 19 inch rackmount
• Power consumption: 45 watts maximum
• Operating temperature: 0 to 40 degrees Celsius
• Humidity range: 10 to 90 percent non-condensing
• Connector type: RJ-48C for DS0, RJ-45 for management
• Supported protocols: ISUP, Q.931, DPNSS, SIP (via gateway integration)
• MTBF: 150,000 hours

Typical Applications

• Enterprise PBX extensions that require additional voice trunks
• Carrier networks linking Nortel core switches to regional gateways
• Call center environments needing scalable channel expansion
• Unified communications deployments that integrate voice and data services
• Disaster recovery sites where hot-swap capability minimizes service interruption

The CNI3 card delivers the performance and reliability that Nortel customers expect, making it a cost-effective solution for expanding network capacity and enhancing service quality across a wide range of telephony applications.