Cisco

Cisco HWIC-4B-S-T | ISDN BRI S/T 4-port (2B+D), 64/128 Kbps per port, PPP/MLPPP, router WAN interface

SKU:HWIC-4B-S-T

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Description

Add reliable ISDN connectivity to branch routers with a 4-port BRI S/T interface card. Each port supports two 64 Kbps B-channels (2B+D) for primary or backup WAN links, dial-on-demand routing, and multilink PPP aggregation. Ideal for legacy carrier environments or resilient out-of-band access.

Features

- Four independent BRI S/T ports for flexible service turn-up
- MLPPP support for higher aggregate bandwidth
- Ideal for legacy ISDN access or backup WAN links
- Low-power, slot-efficient HWIC design
- Broad ISR platform compatibility

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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FAQs

Technical Specifications

FAQs

Q: Do these BRI S/T ports require an external NT1?
A: Yes, S/T interfaces typically expect an external NT1 where required by regional deployments.

Q: Can multiple B-channels be bonded for higher throughput?
A: Yes, use Multilink PPP (MLPPP) to bond B-channels for Nx64 Kbps.

Q: Which routers support this HWIC?
A: It is commonly supported on Cisco ISR 1800/2800/3800 and ISR G2 1900/2900/3900 models with available HWIC slots.

Q: Is this suitable for voice services?
A: It provides ISDN data connectivity; voice applications require appropriate voice gateway modules and configuration.

Technical Specifications

- Interface type: ISDN BRI S/T (2B+D) per port
- Port count: 4 x BRI S/T
- Per-port throughput: 64/128 Kbps (Nx64 Kbps with MLPPP)
- Encapsulations: PPP, MLPPP, HDLC
- Use cases: Primary/backup WAN, dial-on-demand routing, out-of-band access
- Form factor: High-Speed WAN Interface Card (HWIC)
- Router compatibility: Cisco ISR 1800/2800/3800 and ISR G2 1900/2900/3900 series
- Cabling: S/T interface (external NT1 may be required depending on region)

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