Cisco HWIC-1CE1T1-PRI Module

The Cisco Channelized T1/E1 and ISDN PRI modules are designed to provide versatile WAN connectivity for Cisco Integrated Services Routers (ISR). By combining multiple T1/E1 and ISDN Primary Rate Interface (PRI) capabilities into a single card, these modules support a wide range of applications, including fractional or full T1/E1 links, WAN backup, and dial access aggregation.

These modules are engineered to meet the evolving needs of enterprise-class branch offices by integrating routing, security, voice, and wireless capabilities. By offering flexible port densities and software-configurable settings, they allow organizations to streamline their network infrastructure and adapt to various office requirements without needing multiple specialized hardware components.

Product overview

The product lineup includes three primary versions to accommodate different port density requirements. The 1-port (HWIC-1CE1T1-PRI) and 2-port (HWIC-2CE1T1-PRI) versions are available as single-wide High-Speed WAN Interface Cards (HWIC), while the 8-port version (NM-8CE1T1-PRI) is provided as a single-wide network module. These modules are compatible with various Cisco ISR series, including the 2800, 2900, 3800, and 3900 series routers.

A key advantage of these modules is the integration of the Channel Service Unit/Data Service Unit (CSU/DSU) function, which helps consolidate customer premises equipment. Furthermore, the modules are software-configurable, allowing users to switch between T1 and E1 operations and manage balanced or unbalanced E1 terminations seamlessly. This design reduces the need for multiple hardware types, simplifies deployment, and enhances overall system reliability by reducing the number of external devices and cables required.

Features and benefits

• Flexible Configuration: Supports 1, 2, or 8 ports with software-selectable T1 or E1 operation and integrated CSU/DSU per port.
• Versatile Connectivity: Handles fractional or full T1/E1 (n x DS-0) and supports both balanced and unbalanced E1 termination.
• Standard Compliance: Conforms to G.703 and G.704 standards for unframed and framed E1 modes.
• Enhanced Manageability: Includes critical loopback support (local, remote, line, and payload) to simplify troubleshooting without needing external loopback plugs.
• Improved Reliability: The "all-in-one" design reduces potential points of failure by eliminating the need for extra power supplies, fans, and cabling associated with traditional two-box solutions.
• Interoperability: Works with Cisco digital modem modules to provide V.90- and V.92-compliant digital dial access aggregation.
• Protocol Support: Supports Multilink Point-to-Point Protocol (PPP) and Multilink Frame Relay (FRF.16).
• Advanced Diagnostics: Features comprehensive alarm detection (Yellow, Blue, and Red alarms) and relevant MIB support for efficient remote management.