Cisco 2921

Services and Slot Density

Embedded Hardware-Based Cryptography and Acceleration (IPSec + SSL)

Yes

Cisco Unified SRST Sessions

100

Cisco Unified CCME Sessions

100

Total Onboard WAN 10/100/1000 Ports

3

RJ-45-Based Ports

3

SFP-Based Ports (use of SFP port disables the corresponding RJ-45 port)

1

Service Module Slots

1

Double-Wide Service Module Slots (use of a double-wide slot will occupy all single-wide service module slots in a 2900)

1

EHWIC Slots

4

Double-Wide EHWIC Slots (use of a double-wide EHWIC slot will consume two EHWIC slots)

2

ISM Slots

1

Onboard DSP (PVDM) Slots

3

Memory DDR2 ECC DRAM-Default

512 MB

Memory (DDR2 ECC DRAM)-Maximum

2 GB

Compact Flash (External)-Default

slot 0: 256 MB

slot 1: none

Compact Flash (External)-Maximum

slot 0: 4 GB

slot 1: 4 GB

External USB 2.0 Flash Memory Slots (Type A)

2

USB Console Port (Type B) (up to 115.2 kbps)

1

Serial Console Port

1

Serial Auxiliary Port

1

Power-Supply Options

AC, PoE, and DC

RPS Support (External)

Cisco RPS 2300

Power Specifications

AC Input Voltage

100 to 240 VAC auto ranging

AC Input Frequency

47 to 63 Hz

AC Input Current Range AC Power Supply (Maximum)

3.4 to 1.4A

AC Input Surge Current

<50A

Typical Power (No Modules) (Watts)

60

Maximum Power with AC Power Supply (Watts)

320

Maximum Power with PoE Power Supply (Platform Only) (Watts)

370

Maximum End-Point PoE Power Available from PoE Power Supply (Watts)

280

Maximum End-Point PoE Power Capacity with PoE Boost (Watts)

750

DC Input Voltage

24 to 60 Vdc, autoranging positive or negative

DC Input Current

(MAX) 12A (24V)

5A (60V)

Physical Specifications

Dimensions (H x W x D)

3.5 x 17.25 x 18.5 in. (88.9 x 438.2 x 469.9 mm)

Rack Height

2RU

Rack-Mount 19 in. (48.3 cm) EIA

Included

Rack-Mount 23 in. (58.4 cm) EIA

Optional

Wall-Mount (refer to installation guide for approved orientation)

No

Weight with AC Power Supply (No Modules)

29 lb (13.2 kg)

Weight with AC PoE Power Supply (No Modules)

30 lb (13.6 kg)

Typical Weight Fully Configured

34 lb (15.5 kg)

Airflow

Back and Side to Front

Optional Airflow Kit

N/A

Environmental Specifications

Operating Conditions

Temperature: 5,906 feet (1,800m) Maximum Altitude

32 to 104ºF (0 to 40ºC)

Temperature: 9,843 feet (3,000m ) Maximum Altitude

32 to 104ºF (0 to 40ºC)

Temperature: 13,123 feet (4,000m) Maximum Altitude

32 to 86ºF (0 to 30ºC)

Temperature: Short-Term (per NEBS) 5906 feet (1,800m) Maximum Altitude

N/A

Altitude

10,000 ft (3,000m)

Relative Humidity

10 to 85%

Short-Term (per NEBS) Humidity

N/A

Acoustic: Sound Pressure (Typical/Maximum)

54.4/67.4 dBA

Acoustic: Sound Power (Typical/Maximum)

62.6/74.5 dBA

Non-Operating Conditions

Temperature

-40 to 158ºF (-40 to 70ºC)

Relative Humidity

5 to 95%

Altitude

15,000 ft (4,570m)

Regulatory Compliance

Safety

UL 60950-1

CAN/CSA C22.2 No. 60950-1

EN 60950-1

AS/NZS 60950-1

IEC 60950-1

EMC

47 CFR, Part 15

ICES-003 Class A

EN55022 Class A

CISPR22 Class A

AS/NZS 3548 Class A

VCCI V-3

CNS 13438

EN 300-386

EN 61000 (Immunity)

EN 55024, CISPR 24

EN50082-1

Telecom

TIA/EIA/IS-968

CS-03

ANSI T1.101

ITU-T G.823, G.824

IEEE 802.3

RTTE Directive