詳細說明
優(yōu)勢 | 說明 |
服務集成 |
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按需服務 |
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高性能的集成服務 |
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網(wǎng)絡靈活性 |
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節(jié)能 |
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投資保護 |
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型號比較
Form Factor | 3 rack units (RU) | 3 RU | 3 RU | 3 RU |
Integrated WAN Ports | 4 Gb Ethernet (GE) (2 SFP) | 4 GE (2 SFP) | 3 Gigabit Ethernet | 3 Gigabit Ethernet |
Interface slots (enhanced high-speed WAN interface card [EHWIC]) | 3 | 3 | 4 | 4 |
Interface Slots, Network Interface Modules | N/A | N/A | N/A | N/A |
Service-module slots | 4 | 2 | 4 | 2 |
Integrated services module (ISM) slots | 0 | 0 | 1 | 1 |
Packet-voice data-module (PVDM) slots | 3 | 3 | 4 | 4 |
USB Ports (v2.0) | 2 | 2 | 2 | 2 |
Default/maximum flash memory | 256 MB/ 8 GB | 256 MB/ 8 GB | 256 MB/ 8 GB | 256 MB/ 8 GB |
Default/maximum synchronous dynamic RAM (SDRAM) | 1 GB/ 4 GB* | 1 GB/ 4 GB* | 1 GB/ 4 GB* | 1 GB/ 4 GB* |
Modular LAN switchports (with optional Power over Ethernet) | 98** | 74 ** | 98** | 74 ** |
Advanced Security | ||||
Stateful Firewall | Yes | Yes | Yes | Yes |
Onboard hardware VPN acceleration (Digital Encryption Standard [DES], Triple DES [3DES], and Advanced Encryption Standard [AES]) | Yes | Yes | Yes | Yes |
Intrusion Prevention | Yes | Yes | Yes | Yes |
Content Filtering | Yes | Yes | Yes | Yes |
Unified Communications | ||||
Local Conferencing | Yes | Yes | Yes | Yes |
Voice and Video DSP support | PVDM3 and PVDM2 | PVDM3 and PVDM2 | PVDM3 and PVDM2 | PVDM3 and PVDM2 |
Survivable Remote Site Telephony (SRST) | Up to 1500 | Up to 1350 | Up to 1200 | Up to 730 |
Cisco Unified Communications Manager Express | Up to 450 | Up to 400 | Up to 350*** | Up to 250*** |
Cisco Unity Express (network module [NM], service module [SM], or ISM) | 32 ports; 300 mailboxes | 32 ports; 300 mailboxes | 32 ports; 300 mailboxes | 32 ports; 300 mailboxes |
Session Initiation Protocol (SIP) sessions | 2500 | 2000 | 1000 | 800 |
Digital Voice Support | Up to 660 | Up to 420 | Up to 720 | Up to 480 |
Maximum voice support for analog and Basic Rate Interface (BRI) | Foreign exchange station (FXS): 108 | FXS: 60 | FXS 112, FXO 64, BRI 40 | FXS 64, FXO 40, BRI 24 |