Cisco

Cisco SM25-BRI-U | ISDN BRI-U terminal adapter, 2B+D 144 kbps, integrated NT1, 2-wire U-interface, for 2524/2525

SKU:SM25-BRI-U

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Description

Add basic rate ISDN WAN access using a U-interface terminal adapter with an integrated NT1. The module delivers 2B+D (144 kbps) service over a 2-wire local loop, ideal for backup links or legacy ISDN-based connectivity on supported 2500-series routers. It simplifies deployment where U-interface services are provided, reducing the need for external NT1 equipment.

Features

- Integrated NT1 simplifies ISDN deployments
- 2B+D service for up to 128 kbps B-channel throughput
- Reliable legacy WAN or backup connectivity option
- Compact, router-integrated terminal adapter
- Quick turn-up with standard 2B1Q line coding

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

Technical Specifications

- Interface type: ISDN BRI-U (2-wire, U-interface)
- Data rate: 2B+D (2×64 kbps B channels + 16 kbps D)
- NT1: integrated (no external NT1 required)
- Line coding: 2B1Q
- Connector: RJ-45 for U-loop
- Use cases: primary or backup ISDN access
- Compatibility: 2524/2525 and selected 2500-series platforms

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