Specifications

B-2 System Specifications
1. 1.75" = One rack unit.
2. EIA/TIA-232 and EIA/TIA-449 were known as recommended standards RS-232 and RS-449 before their
acceptance as standards by the Electronic Industries Association (EIA) and Telecommunications Industry
Association (TIA).
3. NRZ = Nonreturn to zero. NRZI = Nonreturn to zero inverted.
4. DTE = Data terminal equipment. DCE = Data communications equipment.
Hub Network interface
options
1 Ethernet, 2 synchronous serial, 8 hub (2505)
1 Token Ring, 2 synchronous serial, 8 hub (2506)
1 Ethernet, 2 synchronous serial, 16 hub (2507)
1 Token Ring,
2 synchronous serial, 16 hub (2508)
Access Server Network
interface options
1 Ethernet, 2 synchronous serial, 8 asynchronous serial (2509)
1 Token Ring, 2 synchronous serial, 8 asynchronous
serial (2510)
1 Ethernet, 2 synchronous serial, 16 asynchronous
serial (2511)
1 Token Ring, 2 synchronous serial, 16 asynchronous
serial (2512)
Ethernet interface Attachment unit interface (AUI) IEEE 802.3 (DB-15)
Token Ring interface IEEE 802.5 (DB-9)
Synchronous serial
interfaces
EIA/TIA-232
2
, EIA/TIA-449, V.35, X.21 (NRZ/NRZI
3
and
DTE/DCE
4
)
EIA-530 (NRZ/NRZI and DTE) All serial cables use a DB-60
chassis connector.
Asynchronous serial
interfaces
EIA/TIA-232, EIA/TIA-449, with hardware flow control
support.
Asynchronous serial interfaces use the breakout cable (RJ-45)
BRI ISDN Basic Rate S/T (RJ-45) (2503 and 2504 only)
Console and auxiliary ports Asynchronous serial (RJ-45)
Operating environment 32 to 104°F (0 to 40°C)
Nonoperating temperature –40 to 185°F (–40 to 85°C)
Operating humidity 5 to 95%, noncondensing
Noise level 34 dBa @ 3' (0.914 m)
Description Design Specification