The Cisco 3900 Series builds on the best-in-class offering of the existing Cisco 3800 Series Integrated Services Routers by now offering four platforms: the Cisco 3945E, Cisco 3925E, Cisco 3945, and Cisco 3925 Integrated Services Routers. The Cisco 3900 Series offers embedded hardware encryption acceleration, voice- and video-capable DSP slots, optional firewall, intrusion prevention, call processing, voicemail, and application services. In addition, the platforms support the industry’s wide
| Services and Slot Density | Cisco 3945E | Cisco 3925E | Cisco 3945 | Cisco 3925 |
| 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 1: None |
Slot 0: 256 MB
Slot 1: None |
Slot 0: 256 MB
Slot 1: None |
Slot 0: 256 MB
Slot 1: None |
| Compact Flash (external): Maximum | Slot 0: 4 GB
Slot 1: 4 GB |
Slot 0: 4 GB
Slot 1: 4 GB |
Slot 0: 4 GB
Slot 1: 4 GB |
Slot 0: 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* |
| Rack height | 3 rack units (3RU) | 3RU | 3 RU | 3RU |
| Product Name | Product Description |
| CISCO3945E/K9 | • Cisco 3945 with 4 onboard GE, C3900-SPE250/K9, 3 EHWIC slots, 3 DSP slots, 4 SM slots, 256MB CF default, 1 GB DRAM default, IP Base |
| CISCO3925E/K9 | • Cisco 3925 with 4 onboard GE, C3900-SPE200/K9, 3 EHWIC slots, 3DSP slots, 2 SM slots, 256MB CF default, 1 GB DRAM default, IP Base |
| CISCO3945/K9 | • Cisco 3945 with 3 onboard GE, C3900-SPE150/K9, 4 EHWIC slots, 4 DSP slots, 1 ISM slot, 4 SM slots, 256MB CF default, 1 GB DRAM default, IP Base |
| CISCO3925/K9 | • Cisco 3925 with 3 onboard GE, C3900-SPE100/K9, 4 EHWIC slots, 4 DSP slots, 1 ISM slot, 2 SM slots, 256MB CF default, 1 GB DRAM default, IP Base |
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