User guide

Overview of the Cisco 2500 Series Access Server 1-5
System Specifications
1. BTU = British thermal unit.
2. NRZ = nonreturn to zero; NRZI = nonreturn to zero inverted.
3. DTE = data terminal equipment; DCE = data communications equipment.
Input voltage, DC power supply
Current
Power dissipation
40W, 40–72 VDC
0.5–1.0A
40W (maximum), 135.5 Btus/hr
Processor 20-MHz Motorola 68EC030
Network interface options Model 2509:1 Ethernet, 2 synchronous serial, 8
asynchronous serial
Model 2510: 1 Token Ring, 2 synchronous serial, 8
asynchronous serial
Model 2511: 1 Ethernet, 2 synchronous serial, 16
asynchronous serial
Model 2512: 1 Token Ring, 2 synchronous serial, 16
asynchronous serial
Ethernet interface Ethernet AUI IEEE 802.3
Token Ring interface IEEE 802.5 (DB-9)
Synchronous serial interfaces EIA/TIA-232, EIA/TIA-449, V.35, X.21 (NRZ/NRZI
2
and DTE/DCE
3
mode)
EIA-530 (NRZ/NRZI and DTE mode)
All synchronous serial interfaces use the DB-60
connector at the chassis
Asynchronous serial interfaces EIA/TIA-232,
Asynchronous serial interfaces use RJ-45 connectors
Console and auxiliary ports Asynchronous serial (RJ-45)
Operating environment 32–104°F (0–40°C)
Nonoperating temperature –40–185°F (–40–85°C)
Operating humidity 5–95%, noncondensing
Noise level 34 dBa @ 3' (0.914 m)
Description Specification