Cisco

Cisco WS-X6148-RJ21V | 48x 10/100 (RJ-21) | Legacy inline power (pre-802.3af) | Classic line card

Cisco WS-X6148-RJ21V | 48x 10/100 (RJ-21) | Legacy inline power (pre-802.3af) | Classic line card

SKU:WS-X6148-RJ21V

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Description

High‑density 48‑port Fast Ethernet module with RJ‑21 telco interfaces for structured cabling. Ships with a legacy pre‑standard inline‑power daughter card (WS-F6K-VPWR=) to support older IP phones that predate IEEE 802.3af. For modern 802.3af/at devices, use midspan injectors or a standards‑based PoE module. Requires a compatible chassis and adequate power budget.

Features

- High‑density FE access over RJ‑21 telco connectors
- Supports legacy inline power for older IP endpoints
- Ideal for maintaining compatibility in mixed or migration environments

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: Will this power 802.3af or 802.3at devices?
A: No. It supports legacy pre‑standard inline power only. Use a midspan or a standards‑based PoE line card for 802.3af/at.

Q: What cabling is required?
A: RJ‑21 (50‑pin) telco fan‑out cables or a telco patch panel are required to present RJ‑45 ports.

Q: Can the legacy power be upgraded to 802.3af by swapping cards?
A: This variant is intended for legacy inline power. For 802.3af, use a module with an 802.3af PoE daughter card or the appropriate standards‑based line card.

Technical Specifications

- Port density: 48 x 10/100 Fast Ethernet
- Connector type: RJ-21 Telco (50‑pin), requires fan‑out cables or panel
- Inline power: Pre‑standard (legacy, not IEEE 802.3af)
- Included daughter card: WS-F6K-VPWR=
- Uplinks: None on-card
- Target devices: Legacy IP phones that use pre‑standard inline power
- Chassis compatibility: Compatible with Catalyst 6500 Series chassis
- PoE for modern devices: Use a midspan injector or a standards‑based PoE module

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