| Series |
Cisco 3900 Series |
| Part Number |
Cisco 3945E |
Cisco 3925E (CISCO3925E/K9) |
Cisco 3945 |
Cisco 3925 |
| SERVICES AND SLOT DENSITY |
| Embedded hardware-based cryptography acceleration (IPSec + Secure Sockets Layer [SSL]) |
Yes |
Yes |
Yes |
Yes |
| Cisco Unified Communications Manager Express Sessions** |
450 |
400 |
350 |
250 |
| Cisco Unified SRST sessions |
1500 |
1350 |
1200 |
730 |
| Total onboard WAN or LAN 10/100/1000 ports |
4 |
4 |
3 |
3 |
| RJ-45-based ports |
4 |
4 |
3 |
3 |
| SFP-based ports |
2 |
2 |
2 |
2 |
| Service-module slots |
4 |
2 |
4 |
2 |
| Doublewide service-module slots |
1 |
1 |
1 |
1 |
| EHWIC slots |
3 |
3 |
4 |
4 |
| Doublewide EHWIC slots |
1 |
1 |
2 |
2 |
| ISM slots |
0 |
0 |
1 |
1 |
| Online insertion and removal (OIR) |
Services modules |
Services modules |
Services modules |
Services modules |
| Onboard DSP (PVDM) slots |
3 |
3 |
4 |
4 |
| Memory DDR2 ECC DRAM: Default |
1 GB |
1 GB |
1 GB |
1 GB |
| Memory DDR2 ECC DRAM: Maximum |
2 GB |
2 GB |
2 GB*** |
2 GB*** |
| Compact Flash (external): Default |
Slot 0: 256 MB |
Slot 0: 256 MB |
Slot 0: 256 MB |
Slot 0: 256 MB |
| Slot 1: None |
Slot 1: None |
Slot 1: None |
Slot 1: None |
| Compact Flash (external): Maximum |
Slot 0: 4 GB |
Slot 0: 4 GB |
Slot 0: 4 GB |
Slot 0: 4 GB |
| Slot 1: 4 GB |
Slot 1: 4 GB |
Slot 1: 4 GB |
Slot 1: 4 GB |
| External USB 2.0 slots (Type A) |
2 |
2 |
2 |
2 |
| USB console port (Type B) (up to 115.2 kbps) |
1 |
1 |
1 |
1 |
| Serial console port (up to 115.2 kbps) |
1 |
1 |
1 |
1 |
| Serial auxiliary port (up to 115.2 kbps) |
1 |
1 |
1 |
1 |
| Power-supply options |
Internal: AC, PoE, and DC* |
Internal: AC, PoE, and DC* |
Internal: AC, PoE, and DC* |
Internal: AC, PoE, and DC* |
| Redundant power supply |
Internal: AC, PoE, and DC* |
Internal: AC, PoE, and DC* |
Internal: AC, PoE, and DC* |
Internal: AC, PoE, and DC* |
| POWER SPECIFICATIONS |
| AC input voltage |
100 to 240 VAC autoranging |
100 to 240 VAC autoranging |
100 to 240 VAC autoranging |
100 to 240 VAC autoranging |
| AC input frequency |
47 to 63 Hz |
47 to 63 Hz |
47 to 63 Hz |
47 to 63 Hz |
| AC input current range, AC power supply (maximum) |
7.1 to 3.0A |
7.1 to 3.0A |
7.1 to 3.0A |
7.1 to 3.0A |
| AC input surge current |
<50A |
<50A |
<50A |
<50A |
| DC Operating Input Voltage |
24Vdc - 60Vdc |
24Vdc - 60Vdc |
24Vdc - 60Vdc |
24Vdc - 60Vdc |
| Max Input Current range, DC power supply (A) |
33.2 - 12.4 |
33.2 - 12.4 |
33.2 - 12.4 |
33.2 - 12.4 |
| DC Input Surge Current |
<50A |
<50A |
<50A |
<50A |
| Typical power (no modules) (watts) |
158 |
150 |
105 |
100 |
| Maximum power with AC power supply (watts) |
540 |
420 |
540 |
420 |
| Maximum power with PoE power supply (platform only) (watts) |
540 |
420 |
540 |
420 |
| Maximum endpoint PoE power available from PoE power supply (watts) |
520 |
520 |
520 |
520 |
| Max power with DC input (W) |
574 |
446 |
574 |
446 |
| Maximum endpoint PoE power capacity with PoE boost (watts) |
1040 |
1040 |
1040 |
1040 |
| Dimensions (H x W x D) |
5.25 x 17.25 x 18.75 in.
(133.35 x 438.15 x 476.25 mm) |
5.25 x 17.25 x 18.75 in.
(133.35 x 438.15 x 476.25 mm) |
5.25 x 17.25 x 18.75 in.
(133.35 x 438.15 x 476.25 mm) |
5.25 x 17.25 x 18.75 in.
(133.35 x 438.15 x 476.25 mm) |
| Rack height |
3 rack units (3RU) |
3RU |
3 RU |
3RU |
| Rack-mount 19in. (48.3 cm) EIA |
Included |
Included |
Included |
Included |
| Rack-mount 23in. (58.4 cm) EIA |
Optional |
Optional |
Optional |
Optional |
| Wall-mount |
No |
No |
No |
No |
| Weight with AC power supply (no modules) |
39 lb (17.7 kg) |
39 lb (17.7 kg) |
39 lb (17.7 kg) |
39 lb (17.7 kg) |
| Weight with PoE power supply (no modules) |
40 lb (18.1 kg) |
40 lb (18.1 kg) |
40 lb (18.1 kg) |
40 lb (18.1 kg) |
| Typical weight (with modules) |
60 lb (27.2 kg) |
60 lb (27.2 kg) |
60 lb (27.2 kg) |
60 lb (27.2 kg) |
| Airflow |
Back and sides to front |
Back and sides to front |
Back and sides to front |
Back and sides to front |
| Optional airflow kit (includes filter) |
None |
None |
Front to back and sides |
Front to back and sides |
| ENVIRONMENTAL SPECIFICATIONS |
| OPERATING CONDITIONS |
| Temperature: 5906 ft (1800m) maximum altitude |
32 to 104ºF
(0 to 40ºC) |
32 to 104ºF
(0 to 40ºC) |
32 to 104ºF
(0 to 40ºC) |
32 to 104ºF
(0 to 40ºC) |
| |
|
|
|
| Temperature: 9843 ft (3000m) maximum altitude |
32 to 104ºF
(0 to 40ºC) |
32 to 104ºF
(0 to 40ºC) |
32 to 104ºF
(0 to 40ºC) |
32 to 104ºF (0 to 40ºC) |
| Temperature: 13123 ft (4000m) maximum altitude’ |
32 to 86ºF
(0 to 30ºC) |
32 to 86ºF
(0 to 30ºC) |
32 to 86ºF
(0 to 30ºC) |
32 to 86ºF
(0 to 30ºC) |
| Temperature: Short-term per NEBS/5906 ft (1800m) maximum altitude |
23 to 122°F |
23 to 122°F |
23 to 122°F |
23 to 122°F |
| (-5 to 50°C) |
(-5 to 50°C) |
(-5 to 50°C) |
(-5 to 50°C) |
| Altitude |
4,000m (13,000 ft) |
4,000m (13,000 ft) |
4,000m (13,000 ft) |
4,000m (13,000 ft) |
| Relative humidity |
5 to 85% |
5 to 85% |
5 to 85% |
5 to 85% |
| Short-term (per NEBS) humidity |
5% to 90%, not to exceed 0.024 kg water/kg of dry air |
5% to 90%, not to exceed 0.024 kg water/kg of dry air |
5% to 90%, not to exceed 0.024 kg water/kg of dry air |
5% to 90%, not to exceed 0.024 kg water/kg of dry air |
| Acoustic: Sound pressure (typical/maximum) |
57.6/77.6 |
57.6/77.6 |
57.6/77.6 |
57.6/77.6 |
| Acoustic: Sound power (typical/maximum) |
67.8/84.7 |
67.8/84.7 |
67.8/84.7 |
67.8/84.7 |
| Nonoperating conditions |
|
|
2 |
|
| Temperature |
-40 to 158ºF
(-40 to 70ºC) |
-40 to 158ºF
(-40 to 70ºC) |
-40 to 158ºF
(-40 to 70ºC) |
-40 to 158ºF
(-40 to 70ºC) |
| Relative humidity |
5 to 95% |
5 to 95% |
5 to 95% |
5 to 95% |
| Altitude |
15,584 ft (4750m) |
15,584 ft (4570m) |
15,584 ft (4750m) |
15,584 ft (4570m) |
| REGULATORY AND COMPLIANCE |
| Safety |
UL 60950-1
CAN/CSA C22.2 No. 60950-1
EN 60950-1
AS/NZS 60950-1
IEC 60950-1 |
UL 60950-1
CAN/CSA C22.2 No. 60950-1
EN 60950-1
AS/NZS 60950-1
IEC 60950-1 |
UL 60950-1
CAN/CSA C22.2 No. 60950-1
EN 60950-1
AS/NZS 60950-1
IEC 60950-1 |
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 |
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 |
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 |
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 |
TIA/EIA/IS-968
CS-03
ANSI T1.101
ITU-T G.823, G.824
IEEE 802.3
RTTE Directive |
TIA/EIA/IS-968
CS-03
ANSI T1.101
ITU-T G.823, G.824
IEEE 802.3
RTTE Directive |
TIA/EIA/IS-968
CS-03
ANSI T1.101
ITU-T G.823, G.824
IEEE 802.3
RTTE Directive |