NM-2CT1-CSU Cisco 2 Ports Network Module Channelized T1 ISDN PRI with CSU

Highlight Cisco NM-2CT1-CSU 2 Ports Network Module

NM-2CT1-CSU is a Cisco network module that provides two channelized T1/E1 ports for WAN connectivity. It is designed to support voice and data applications by connecting legacy T1 or E1 circuits. The module is used with compatible Cisco routers to expand network interface capabilities. It helps improve connectivity, flexibility, and integration of telecom services in enterprise networks.

General Information

• Manufacturer: Cisco
• Part Number: NM-2CT1-CSU
• Device Type: Network Module

Technical Specifications

• Number of Ports: 2 × T1/ISDN PRI
• Interface Type: RJ-48C CSU Connector
• WAN Technology: Channelized T1
• Line Rate: 1.544 Mbps per T1
• Channel Support: Up to 24 DS0 channels per port
• Integrated CSU/DSU: Yes
• Signal Type: Digital T1
• Network Service: ISDN PRI 
• Form Factor: Internal Router Expansion Module
• Installation Type: Router Slot Expansion
• Connector Type: RJ-48 CSU WAN Connector
• Module Type: Cisco Network Module
• Internal Installation: Yes
• Hot Swap Support: No 

Compatibility

• Cisco 2600 Series
• Cisco 2600XM Series
• Cisco 2691 Series
• Cisco 3600 Series
• Cisco 3700 Series
• Cisco 3725
• Cisco 3745
• Cisco 3660 Series
• Cisco 3631

Cisco IOS Compatibility

• Cisco 2600 Series: IOS 11.3(4)T or later
• Cisco 2600XM Series: IOS 12.1(14) or later
• Cisco 2691 Series: IOS 12.2(8)T1 or later
• Cisco 3600/3700 Series: Platform-dependent IOS support

WAN Connectivity

• Reliable T1 channelized connections
• Optimized for enterprise-grade networking
• Supports multiple DS0 channels for flexible deployment

Cisco NM-2CT1-CSU 2 Ports Network Module Overview

The Cisco NM-2CT1-CSU 2 Ports Network Module Channelized T1 ISDN PRI with CSU is engineered to deliver robust connectivity for enterprise-grade networking environments. This module integrates channelized T1 interfaces with an embedded Channel Service Unit, ensuring compliance with telecommunications standards while simplifying deployment. Designed for Cisco router platforms, it provides flexible support for ISDN Primary Rate Interface services, enabling organizations to scale their voice and data infrastructure with efficiency.

Interface Design

The module features two channelized T1 ports, each capable of supporting multiple logical channels. With integrated CSU functionality, it eliminates the need for external CSU devices, reducing hardware complexity and streamlining installation. The duplex RJ-48 connectors ensure secure and reliable physical connections to telecommunications circuits.

Supported Standards

Compatibility with ISDN PRI standards allows seamless integration into voice and data networks. The module supports both North American T1 signaling and international standards, ensuring adaptability across diverse deployment scenarios. Compliance with ATM and Frame Relay encapsulations further enhances its versatility.

Performance Metrics

Each T1 port delivers a maximum data rate of 1.544 Mbps, supporting up to 24 DS0 channels. The channelized architecture allows administrators to allocate bandwidth dynamically, optimizing resources for voice, video, and data applications. Integrated CSU functionality ensures line integrity, monitoring signal quality and providing loopback testing capabilities.

Enterprise Voice Integration

Organizations deploying Cisco Unified Communications solutions benefit from the module’s ability to support ISDN PRI trunks. This enables high-capacity voice connectivity, facilitating PBX integration and SIP gateway deployments. The channelized design ensures efficient utilization of available bandwidth, supporting multiple concurrent voice sessions.

Data Networking Applications

Beyond voice, the module supports data networking applications requiring reliable T1 connectivity. Enterprises can leverage the module for WAN access, connecting branch offices to central data centers. The CSU functionality ensures compliance with carrier requirements, simplifying provisioning and maintenance.

Service Provider Environments

Service providers benefit from the module’s ability to deliver channelized services to customers. By supporting multiple logical circuits over a single physical T1 line, providers can maximize infrastructure utilization while offering flexible service packages. The integrated CSU reduces deployment costs and enhances reliability.

Supported Routers

The Cisco NM-2CT1-CSU module is compatible with a range of Cisco router platforms, including the Cisco 2600, 3600, and 3700 series. This ensures broad applicability across enterprise and service provider environments. Integration with Cisco IOS software provides administrators with advanced configuration options, enabling fine-grained control over channel allocation and signaling protocols.

Software Requirements

Operation requires Cisco IOS releases supporting channelized T1 and ISDN PRI functionality. Advanced feature sets provide support for voice gateway services, QoS policies, and security features. Administrators can leverage Cisco IOS commands to configure signaling, monitor performance, and troubleshoot connectivity issues.

Channelized Architecture

The ability to channelize T1 circuits allows administrators to partition bandwidth into multiple DS0 channels. This supports diverse applications, from voice trunks to dedicated data circuits. Dynamic allocation ensures efficient utilization, adapting to changing traffic patterns.

Integrated CSU Functionality

The embedded CSU provides essential line management capabilities. It monitors signal quality, performs loopback testing, and ensures compliance with carrier specifications. This reduces the need for external CSU devices, simplifying deployment and lowering costs.

Voice and Data Convergence

By supporting ISDN PRI, the module enables convergence of voice and data services over a single infrastructure. Enterprises can deploy unified communications solutions, integrating PBX systems with IP networks. This enhances collaboration while reducing operational expenses.

Scalability

The dual-port design provides scalability, allowing organizations to expand capacity as demand grows. Channelized architecture ensures flexible resource allocation, supporting both small-scale and large-scale deployments.

Reliability

Integrated CSU functionality enhances reliability by ensuring line integrity. Continuous monitoring and diagnostic capabilities reduce downtime, supporting mission-critical applications.

Corporate Telephony

Enterprises deploying ISDN PRI trunks for corporate telephony benefit from the module’s dual-port design. It supports high-capacity voice connectivity, enabling integration with PBX systems and SIP gateways.

Branch Office Connectivity

Organizations connecting branch offices to central data centers can leverage the module for reliable WAN access. Channelized T1 circuits provide dedicated bandwidth for critical applications, ensuring consistent performance.

Service Provider Offerings

Service providers offering channelized T1 services benefit from the module’s flexibility. It supports multiple logical circuits, enabling providers to deliver customized service packages to customers.

Electrical Characteristics

Operating at standard T1 line voltages, the module ensures compatibility with telecommunications infrastructure. Integrated CSU functionality provides line conditioning, ensuring signal integrity across long distances.

Software Configuration

Administrators configure the module using Cisco IOS commands. Configuration options include channel allocation, signaling protocols, and diagnostic testing. Advanced features support QoS policies, ensuring prioritization of voice traffic.

Quality of Service

QoS policies ensure prioritization of voice traffic, minimizing latency and jitter. This enhances call quality, supporting enterprise-grade telephony applications.

Bandwidth Allocation

Dynamic channel allocation allows administrators to optimize bandwidth utilization. Channels can be assigned to voice, data, or video applications, ensuring efficient resource management.

Diagnostic Capabilities

Integrated CSU functionality provides diagnostic capabilities, including loopback testing and signal monitoring. This simplifies troubleshooting, reducing downtime and maintenance costs.

Adaptability

The module’s support for ISDN PRI and channelized T1 ensures adaptability to evolving networking requirements. Enterprises can deploy unified communications solutions while maintaining compatibility with legacy infrastructure.

Investment Protection

Compatibility with multiple Cisco platforms ensures investment protection. Organizations can reuse the module across diverse environments, reducing upgrade costs.

Scalable Architecture

The dual-port design provides scalability, supporting growth in voice and data traffic. Channelized architecture ensures flexible resource allocation, adapting to changing demands.

Enterprise Value

Enterprises benefit from enhanced connectivity, supporting unified communications and WAN access. Service providers leverage its flexibility to deliver customized offerings, maximizing infrastructure utilization.

Technical Excellence

With compliance to industry standards, advanced diagnostic capabilities, and compatibility with Cisco platforms, the module exemplifies technical excellence. It supports mission-critical applications, ensuring consistent performance and reliability.