

The Cisco 2821 Integrated Services Router features the ability to deliver multiple high-quality simultaneous services at wire speed up to multiple T1/E1/xDSL connections. The 2821 Integrated Services Router offer embedded encryption acceleration and on the motherboard voice digital-signal- processor (DSP) slots, intrusion prevention system (IPS) and firewall functions; optional integrated call processing and voice mail support; high-density interfaces for a wide range of wired and wireless connectivity requirements; and sufficient performance and slot density for future network expansion requirements and advanced applications.
The C2821-25UC/K9 offers integrated unified communications and superior processing power compared to the 2811 but less than the 2851.
Ensure proper power supply, check network cable connections, and verify configuration settings via the CLI.
The C2821-25UC/K9 comes with 128MB Flash and 512MB DRAM, supporting efficient data processing and storage for network operations.
We promise that our products are original and genuine only. Brand-new products will be brand new and sealed to ensure no malfunctions, and second-hand products will undergo strict testing before shipment.
We offer a 1-year warranty for brand-new products and a 90-day warranty for second-hand products. During the warranty period, if the equipment you purchase has any operational defects, we will replace it for you (the warranty does not cover faults caused by human damage and improper use).
Once the product malfunctions, please notify us as soon as possible, and we will appreciate your detailed description or photos.
The warranty period is calculated from the date of receipt of the goods. For any issues or inquiries regarding your purchase, please feel free to contact us via WhatsApp (+86 152 7186 6615) or Skype/Email: sales@infdevice.com