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Cisco Systems 2503

Router

Basic Information

Manufacturer
Cisco Systems
Model
2503
Device Type
Router
Release Year
1994

Rack Mounting

Rackmountable
Yes
Rack Units
1U

Power

Power Supply
Internal

Fixed Interfaces

Data Interfaces

Qty Speed Protocol / Signaling Interface Notes
1x 128 kbps ISDN BRI (S/T) RJ-45 (8P8C)
1x 10 Mbps Ethernet DA-15
2x 2.048 Mbps TIA-232 (RS-232)TIA-449 (RS-449)TIA-530 (RS-530)V.35X.21 Proprietary

Management Interfaces

Qty Type Interface Pinout Notes
1x Console RJ-45 (8P8C) —
1x Remote RJ-45 (8P8C) —

Change History

Updated TheSerialPort 2026-09-23 00:03
  • Added Photo: Photo of Router: Cisco Systems 2503
  • Photo: Changed Order
Updated TheSerialPort 2026-04-08 15:17
  • Network Interface: Changed Speed value
  • Network Interface: Changed Speed unit
  • Network Interface: Changed Protocol / signaling
  • Network Interface: Changed Notes
Updated ben 2026-02-22 18:47
  • Added Photo: Photo of Router: Cisco Systems 2503
Updated ben 2026-02-21 19:12
  • Model: 2501 #1 → 2503
  • Status: Draft → Published
  • Submitted by: (empty) → TheSerialPort
  • Added Network Interface: 1x 128kbps ISDN (S/T) RJ-45 (8P8C)