Cisco 2821 manual. The Cisco 2800 Series provides significant additional value compared to prior generations of Cisco routers at similar price points by offering CISCO 2800 Series Router Hardware View. Cisco 2821 manual

 
 The Cisco 2800 Series provides significant additional value compared to prior generations of Cisco routers at similar price points by offering CISCO 2800 Series Router Hardware ViewCisco 2821 manual Are you looking for the hardware installation guide for Cisco 2900 series routers? This PDF document provides detailed instructions on how to install, connect, and

Purpose. If you are concerned about the processing load of NTP you might consider setting up a hierarchial organization: have 2 or 3 switches sync to the primary NTP server, and divide the other switches up so that one group learns time. The Cisco IP Phones 8811, 8841, 8845, 8851, 8851NR, 8861, 8865, and 8865NR deliver easy-to-use, highly secure voice communications. MU-MIMO enables access points to. Page 21 highlights. Preparing to Connect to a Network Ethernet Connections The IEEE has established Ethernet as standard IEEE 802. While in global configuration mode, specify a line with the line vty or line console command. From here you have access to all configuration options. In addition, use the following guidelines when working with any equipment that is disconnected. Specifications Table 12 Cisco 2851 Router Specifications Description Dimensions (H x W x D) Weight AC input power • Input. Figure 1. View all Cisco 2821 manuals We have the following Cisco 2821 manuals available for free PDF download. Power-Up Procedure To power up your Cisco 2800 series router and verify that it goes through its initialization and self-test, perform this procedure. 1. 5 1GD/256F (1) 1 product ratings - Cisco 2821 Router ADVENTERPRISE 15. Add to My Manuals. A Crypto Officer can assign permission to access the Crypto Officer. View all Cisco CISCO2821 manuals. View all Cisco CISCO2821 manuals. Add to My Manuals. Save this manual to your list of manuals. Download Download PDF Contents Table of Contents Fullscreen View Fullscreen. Entering to Privileged mode: Router>enable. Description, Specification, CISPR22 Class A; AS/NZS 3548 Class A; VCCI Class - router specification. Note On the Cisco 2811, Cisco 2821, and Cisco 2851 routers, the. Figure 1. Cisco 2821, and Cisco 2851 routers, enable you to determine router performance and operation. Add to My Manuals. Single-wide network modules are installed in fixed network module slots on Cisco 2600 series, Cisco 3600 series, Cisco 3700 series, and Cisco MWR 1941-DC routers, and in configurable network module slots on Cisco 2811, Cisco 2821, Cisco 2851, and Cisco 3800 series routers. View all Cisco CISCO2821 manuals. Caution Dual sources with opposite-polarity grounding damage equipment. Troubleshooting Cisco 2800 Series Routers If you encounter problems with your Cisco 2800 series integrated services router, use this information to isolate problems in the router or to eliminate the router as the source of the. • In a Cisco 2851 router, use filler panels as follows: - To create a slot for a standard. Cisco SPA2102 manual 90 pages. 4331 Integrated Services Router: Access product specifications, documents, downloads, Visio stencils, product images, and community content. Page 13 highlights. Save this manual to your list of manuals Page 48 highlights Specifications Table 8 Interface Numbering on Cisco 2811, Cisco 2821, and Cisco 2851 Integrated Services Routers (continued) Port Location Interface Numbering Scheme Examples1, 2 Voice port in a BRI expansion module (internal slot) in an extension voice module (EVM) Interface-type 26. Page 118 highlights. Manualsbrain. Conventions - memory. Manual Cisco 2821. Page 67 highlights. Step 8, Power Up and Initial Configuration Procedures for Cisco 2800 Series Routers, OL-5788-01. Return, Router, Step 1 - router configuration. It helps ensure uninterrupted operation and protection against device. Save this manual to your list of manuals. 99. Installing Slot Dividers in Network Module Slots. Also for: 2801, 2821 - integrated services router unified communications bundle, 2851, 2800, 2811, 2821. Power Up and Initial Configuration Procedures. Page 3 highlights. The system delivers power supply redundancy and resiliency for a variety of power requirements, including Power over Ethernet (PoE). 5 1GD/256F $119. enable 2. Save this manual to your list of manuals. 4(9) CCP Version 2. Entering to Global Configuration mode: Router #configure terminal. View all Cisco CISCO2821 manuals. The Cisco. OL-5793-01 Removing and Installing CompactFlash Memory Cards in Cisco 2800 Series Routers 3. Cisco 2821 Installation Manual. Orest C. Method 2. UPC - 882658198021. Save this manual to. Apr 21, 2019 04/19. Cisco 90-Day Limited Hardware Warranty Terms - configuration guide. com - price. Installing a CompactFlash Memory Card. Máte dotaz ohledně Cisco 2821 nebo potřebujete pomoc? Zeptejte se zde For high-density analog PSTN interfaces, the NM-HDA (supported on the Cisco 2600, Cisco 2811, Cisco 2821, Cisco 2851, Cisco 37xx, and Cisco 38xx) or the EVM-HD-8FXS/DID card (supported on the Cisco 2821, Cisco 2851, and Cisco 38xx) can be used. View all Cisco CISCO2821 manuals. Performance. Access Point High-Speed WAN Interface Cards. Add to My Manuals. Before you proceed with this method, make sure you have a TFTP server on the network to which you have IP connectivity. Required Tools and Equipment for Installation and Maintenance Inspect all items for shipping damage. Use this mode to configure parameters for the terminal line. In. View all Cisco CISCO2821 manuals. OL-5793-01 Removing and Installing CompactFlash Memory Cards in Cisco 2800 Series Routers 3. Cisco CISCO2821 User Guide - Page 100. Save this manual to your list of manuals. Hardware Supported . View all Cisco CISCO2821 manuals. clock set hh :mm:ss day month year. View all Cisco CISCO2821 manuals. Add to My Manuals. View all Cisco CISCO2821 manuals. View all Cisco 2821 manuals. Statement 1077 Installing Modules and Interface Cards Cisco routers are normally shipped with network modules, high-speed WAN interface cards (HWICs), and voice interface cards (VICs) already. Access point HWIC for Japan. However, I cannot seem to figure why NAT is not. To replace a power supply in a Cisco 2821 or Cisco 2851 router, remove the chassis cover as described in the "Removing the Chassis Cover" section on page 2, and perform the procedure in the "Installing a Power Supply in a. Page 39 highlights. Add to My Manuals. View all Cisco CISCO2821 manuals. Jump to a Section. "0" is required by the CLI syntax for voice ports in an EVM; it indicates no interface card slots in EVMs. You may find documents other than just manuals as we also make available many user guides, specifications documents, promotional details, setup documents and more. View all Cisco 2821 manuals. A MultigiGabit Fabric (MGF) enables high-bandwidth module-to-module communication without compromising routing performance. View all Cisco CISCO2821 manuals. To prevent damage to the ejector mechanism, the ejector button must remain fully seated when not being. • In Cisco 2821 routers, the network module slot adds support for a single network module enhanced extended (NME-X), and an additional slot supports an extension voice. Apr 21, 2019 04/19. 254. View all Cisco CISCO2821 manuals. Installing and Upgrading Fans in Cisco 2811 Series Routers 8 78-17850-01. Following pdf manuals are available: Cisco Cisco 2811 Integrated Services Router Data Sheet, Information Guide, Installation Guide. Page 6 highlights. Entering to Global Configuration mode: Router #configure terminal. The EHWIC 1 GE-SFP-CU provides copper and optical Gigabit Ethernet connectivity through a dual-purpose uplink. English. Installing a PVDM To install a PVDM, follow these. Add to My Manuals. Download Cisco 2821 - Integrated Services Router Unified Communications Bundle Manual (Total Pages: 20) for free in PDF. Power Up and Initial Configuration Procedures for Cisco 2800 Series Routers This document describes how to power up your Cisco 2800 series integrated services router and perform an initial configuration to provide network access. Cisco CISCO2821 User Guide - Page 126. Cisco CISCO2821 User Guide - Page 124. Page 144 highlights. Gloria Gaynor and Donna Summer were among the stars who made their mark in disco music in the 1970s, and the genre encouraged party people to leave their. Integrated Services Router 1841, 2800, and 3800 Series product families have lead the access routing market for the past 6 years; however with greater demands in the branch for higher performance for next-generation WAN connectivity, increased media collaboration, video and virtualization applications, Services on Demand, and greater improvements in energy savings, a new generation of. Removing the Chassis Cover Step 4 Perform the following steps to loosen the cover from the chassis: a. Figure 16 shows the rear panel of a Cisco 2821 router. The phone supports a built-in Gigabit Ethernet switch for your PC connection. Setting Up the Chassis Figure 10 Bracket Installation for Rear Mounting A F A= ACT SF=ES0P/E1ED A= FDX A= LINK FE 0/0 A S L F S PVDM2 PVDM1 PVDM0 AIM1 L AIM0 Bracket for 23-inch rack Bracket for 19-inch rack Use four screws. 1 YES manual up down (no cable connected) You figure it out. Save this manual to your list of manuals. View all Cisco CISCO2821 manuals. Cisco 2821 CISCO2821 manual : Cisco 2800 Series Integrated Services Routers. Installing and Removing AIMs Step 3 Step 4 Install the two metal standoffs (included in the accessory kit) in place of the two screws that are labeled A in Figure 26. Figure 1 CompactFlash Memory Card Slot in Cisco 2800 Series Routers 111992 SYS AUX/ SYS 1 PWR PWR ACT CF COMPACT FLASH 0 Do Not Remove During Network Operation Ejector button Compact Flash slot Installing a. Access Point High-Speed WAN Interface Cards. Cisco 2811 Router with Cisco IOS ® Software Release 12. 78-17850-01 Installing and Upgrading Fans in Cisco 2811 Series Routers 11. Step 6 Lift the cover free of the router chassis. Installing and Upgrading Internal Modules in Cisco 2800 Series Routers 24 OL-5792-04. View and Download Cisco 7821 user manual online. Page 5 highlights. Save this manual to your list of manuals. Conventions Table 1 Hardware Documentation for Cisco 2800 Series Routers (Continued) Topic Installing and Upgrading Internal Modules in Cisco 2800 Series. (See Figure 2 . 3. Save this manual to your list of manuals. View and Download Cisco Network Device 2800 introduction manual online. View all Cisco CISCO2821 manuals. sentryselect-investments. Office Manuals and free pdf instructions. Page 68 highlights. Installing Internal Field-Replaceable Units (FRUs. 10. Table 3 summarizes some typical WAN, LAN, and voice connections for the Cisco 2800 series routers. Login with Facebook Sean - 12 Dec . Locating Modules Locating Modules Figure 8 shows the locations of the DIMMs, AIMs, PVDMs, and power supply in Cisco 2801 routers. Page 69 highlights. Save this manual to your list of manuals. Cisco 2821 manual 204 pages. Page 103 highlights. Language: English. Installing Slot Dividers in Network Module Slots. Reviewed by. com features extensive online support resources. Prior to Cisco IOS 12. Cisco CISCO2821 User Guide - Page 47. Cisco CISCO2821 User Guide - Page 22. . End-of-Support Date: 2016-11. value compared to prior generations of Cisco routers at similar price points by offering up to a. Cisco EPC2203. Add to My Manuals. Cisco CISCO2821 User Guide - Page 177. Results from the CBS Content Network. Accton Technology 100BASE-TX Switch User Manual. View all Cisco CISCO2821 manuals. Save this manual to your list of manuals. Save this manual to your list of manuals. Removing Screws from System Board-AIM Slot 1 Installation Shown, Step 1. Cisco CISCO2821 User Guide - Page 54. Pages in total: 18. 2, section 7. Hardware Supported . Page 29 highlights. The higher-end router platforms of the Cisco 2800 series offer increased performance, increased slot density including network module slots ad extension voice module slots and increased inline power output. Cisco 2821 Manual. Cisco 2821 CISCO2821 manual : Cisco 2800 Series Integrated Services Routers. View all Cisco CISCO2821 manuals. For other routers, cannot be installed directly into Cisco router interface card slots. 1 inch. Save this manual to your list of manuals. Replacing the Power Supply Figure 35 Cisco 2801 Main Power Supply Removal . Page 86 highlights. For example, to connect to 2511-1 type 1 , which is the connection number. The fax relay feature provides enhanced supplementary feature capability on analog ports connected to a Cisco integrated services router (ISR) or Cisco VG224 analog gateway. Add to My Manuals. The Monroe Calculating Machine Company was a maker of adding machines and calculators founded in 1912 by Jay R. (44. Page 108 highlights. 13 Obtaining Technical Assistance Cisco Technical Support provides 24-hour-a-day award-winning technical assistance. Save this manual to your list of manuals. If anything appears to be damaged, or if you encounter problems. Data Sheet. A number 2 Phillips screw driver is required. Cisco CISCO2821 User Guide - Page 194. View all Cisco 2821 manuals. • NME-AIR-WLC12. PuTTY command line for Router Configuration: Where hostname of the Router is "Router". Cisco routers · Cisco 2821 manual. Installing Modules and Interface Cards - v 03. En300386; En55024/cispr24; En50082-1; En61000-6-2, Ul 60950; Can/csa C22. Cisco 2811 and Cisco 2821 Integrated Services Routers Manual in PDF. Power Up and Initial Configuration Procedures for Cisco 2800 Series Routers This document describes how to power up your Cisco 2800 series integrated services router and perform an initial configuration to provide network access. Cisco 2821 manual 204 pages. White Papers. Page 145 highlights. Check the Cisco 2800 Series Cards and Modules online document for software requirements for the network module. Figure 33 Removing a PVDM 1 2 Installing and Removing PVDMs 1 103468 1 Release clips 2 Tilt the PVDM Step 3 Place the PVDM in an antistatic bag to protect it from ESD damage. 2821 Series network router pdf manual download. 1. View all Cisco CISCO2821 manuals. Following pdf manuals are available: Cisco Cisco 2821 Integrated Services Router Data Sheet, Installation Guide, Leaflet. Cisco 2801 Main Power Supply Removal, Step 3. Summary of Contents for Cisco 1760V. ADSL WICs DSL Interface Cards Note The term dying gasp refers to power status as defined in ITU-T standard G. View all Cisco CISCO2821 manuals. Cisco SD-Access – Connecting Multiple Sites in a Single Fabric 16:45 BRKCRS-2823 Cisco SD-Access – Firewall Integration BRKCRS-2818 Build a Software Defined Enterprise with Cisco SDWAN & SD-Access 09:45 BRKCRS-2830 Cisco SD-Access –Lessons learned from Design & Deployment 14:45 BRKCRS-3810 Cisco SD-Access deep dive. HWIC-AP-G-E. Cisco CISCO2821 User Guide - Page 100. Table 3, Table 4 - integrated services. Cisco 3845 V3PN Bundle with IOS Advanced IP Services, PVDM2-64, AIM-VPN/HPII-PLUS, FL-CCME (240 users),64 MB Flash/256 MB DRAM. View all Cisco CISCO2821 manuals. It includes the following. To reload the router, issue the reset command, as shown in this example: rommon 3> reset. Removing Slot Dividers from Network Module Slots, View all Cisco CISCO2821 manuals. View all Cisco CISCO2821 manuals. • The "Installing a CompactFlash Memory Card" section of the Removing and Installing CompactFlash Memory Cards in Cisco 2800 Series Routers online document Note If there are internal FRUs to. Obtaining Technical Assistance Cisco Technical Support Website The Cisco Technical Support Website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. PSTN calls to DID destinations can be switched automatically to the. View all Cisco CISCO2821 manuals. Installing Slot Dividers in Network Module Slots Installing Slot Dividers in Network Module Slots In a Cisco 2851 router, you can install a. A. 75 x 17. Replacing the Power Supply Installing a DC-Input Power Supply The DC-input power supply has two power connectors, as shown in Figure 51. The following table shows the major hardware features of the Cisco IP Phone 8800 Series. LEDs on ADSL WICs ADSL WICs have three LEDs, which are shown in Figure 62 and are. Page 157 highlights. Cisco CISCO2821 User Guide - Page 45. Router(config-controller)# line-termination 75-ohm . Obtaining Documentation 3. But when I point my web browser at the IP address of the router, it give me a very simple web interface. Network Device Cisco 2800 network router pdf manual download. Most routers and switches by Cisco have default passwords of admin or cisco, and default IP addresses of 192. The time specified is relative to the configured time zone. Page 41 highlights. View all Cisco 2821 manuals. Cisco CISCO2821 User Guide - Page 170. UPC - 882658198021. Safety Warnings Warnung WICHTIGE SICHERHEITSANWEISUNGEN Dieses Warnsymbol bedeutet. Save this manual to your list of manuals. Cisco 2821 User Guide - Page 49. ITEMS. en. View all Cisco CISCO2821 manuals. Add to My Manuals. Use a 1/4-inch nut driver to tighten the standoffs. Table 3 summarizes some typical WAN, LAN, and voice connections for the Cisco 2800 series routers. Add to My Manuals. Save this manual to your list of manuals. In addition, Cisco Technical Assistance Center (TAC) engineers provide telephone support. Specifications Table 8 Interface Numbering on Cisco 2811, Cisco 2821, and Cisco 2851 Integrated Services Routers (continued) Port Location Interface Numbering Scheme Examples1, 2 Voice port in a BRI expansion module. Page 126 highlights. View all Cisco CISCO2821 manuals. Software Requirement for AIMs Cisco IOS software of a specified release or later. Page 156 highlights. Cisco 2821 Installation Manual, Brookfield Viscometer Manual Rvt, Hyundai H100 Manual De Reparacion, Black & Decker Le750 Edge Hog Manual, Sinumerik 828d Manual,. 0 (SIP). Cisco Systems Routers Installing and Upgrading Fans. Deutsch;. Cisco's End-of-Life Policy. 7821 ip phone pdf manual download. Removing the Chassis Cover Figure 3 Removing the Cisco 2801 Chassis Cover 103168 Step 5 Place the router bottom on an antistatic mat, and begin installing modules. Cisco Integrated Services Routers Generation 2 Ordering Guide. Add to My Manuals. View all Cisco CISCO2821 manuals. 02-Nov-2015. The Cisco 2800 Series provide two 10/100 on the Cisco 2801 and Cisco 2811 and two 10/100/1000 on the Cisco 2821 and Cisco 2851 Support for Cisco IOS Software The Cisco 2800 helps enable end-to-end solutions with full support for the latest Cisco IOS Software-based QoS, bandwidth management, and security features. Cisco 4000 Series Integrated Services Routers: Architecture for Branch-Office Agility (PDF - 971 KB) Miercom Performance Analysis: Cisco 4000 Series ISRs (PDF - 878 KB) 4321 Integrated Services. The Cisco 2800 Series comprises four new platforms (refer to Figure 1): the Cisco 2801, the Cisco 2811, the Cisco 2821, and the Cisco 2851. All of the devices used in this document started with a cleared (default) configuration. ) A Cisco 2811 router can also be mounted on a wall or other flat surface. en. Table 1 gives part numbers for ordering Cisco ® integrated services router bundles. Cisco Systems Network Router 2821 Series User Guide | ManualsOnline. 1T ios Call Manager Express CME 8. Cisco 1- and 2-Port Fast Ethernet HWICs. Page 192 highlights. Cisco 2821 User Guide - Page 4. 11-01-2021 10:05 AM. Note On the Cisco 2801 router, the numbering format for slots is interface type 0/slot/port. Add to My Manuals. To enter config mode, issue the config terminal command. Cisco CISCO2821 User Guide - Page 170. Page 23 From DC power source Plastic covers Figure 20 DC Wire Routing and Attachment for Cisco 2821 and Cisco 2851 Routers C O N S O A U X Cable tie 2 4 - 6 0 V - - - 1 2 A. co. Save this manual to. Add to My Manuals. Cisco CISCO2821 User Guide - Page 50. Call 1-800-438-0935 for Oster Breadmakers. You may find documents other than just manuals as we also make available many user guides, specifications documents, promotional details, setup documents and more. Page 27 highlights. A NME extended version (NME-X) also can be substituted in the Cisco 2821 or Cisco 2851, which is a wider Home - Cisco Community View and Download Cisco 2811 operations online. Save this manual to your list of manuals. Page 113 highlights. Page 200 highlights. Cisco 2821 CISCO2821 manual : Cisco 2800 Series Integrated Services Routers. UPC - 882658198021. Also for: 2811, 2821. Cisco 3845 V3PN Bundle with IOS Advanced IP Services, PVDM2-64, AIM-VPN/HPII-PLUS, FL-CCME (240 users),64 MB Flash/256 MB DRAM. clock set hh :mm:ss month day year. Figure 29 CompactFlash Memory Card Location on the AIM 120375 Installing and Upgrading Internal Modules in Cisco 2800 Series Routers 30 OL-5792-04. Product Name. Cisco 1841 Cisco 2801 Cisco 2811 Cisco 2821 Cisco 2851 Cisco 3825 Cisco 3845. View all Cisco 2821 manuals. Figure 10 and Figure 11 show the locations of the DIMMs, AIMs, PVDMs, and power supply in Cisco 2821 and. It helps ensure uninterrupted operation and protection against device power supply failures by providing seamless failover for Cisco switches. Add to My Manuals. The system delivers power supply redundancy and resiliency for a variety of power requirements, including Power over Ethernet (PoE). Add to My Manuals. 2 Safety Warnings and Guidelines. The routers offer embedded encryption acceleration and on the. Find the office and computer equipment manual you need at ManualsOnline. 2a but there is no option to configure the router's access-list using gui. CISCO 2800 Series Router Hardware View. I want to hang the concentrator 2821off the main 2821 and I want to give the VPN Router one of my public IP's and route all VPN traffic from the main router to the VPN router. Save. by Radio Shack. Front Panel of Cisco 2821 and Cisco 2851 Routers with DC Input Power, Rear - 2821 ethernet module. Table of Contents. 1. Page 54 highlights. Page 4 highlights. Page 23 highlights. On the Cisco 2801 router, all slots begin with "0," because all slots are built into the chassis. 1T ios Call Manager Express CME 8. Cisco CISCO2821 User Guide - Page 41. Cisco 2821 Integrated Services Router - read user manual online or download in PDF format. 8 stars - 1326 reviews The Cisco 2821 Integrated Services Router is now obsolete (past End-of-Life and End-of-Support status). View all Cisco 2821 manuals. Cisco 2821 Service Manual, Free 2004 Mazda Tribute Owners Manual, Front Row Pro Manual, Dfi P5bv3+ Manual, Th4110d Install Manual, Rochester Manual Pdf, Chicago Manual Of Style Footnotes Use Of Ibid. Save this manual to your list of manuals. ) Note Ports on. Cisco 2800 Series Hardware Documents: Introduction and Warnings 12 OL-5808-01We have the following Cisco CISCO2821 manuals available for free PDF download. or over any holes, screws, or existing labels. Cisco 2811 and Cisco 2821 Integrated Services Routers Manual in PDF. Save this manual to your list of manuals. View all Cisco CISCO2821 manuals. Step 2 Connect one end of the straight-through RJ-11 cable to an RJ-11 port on the card. The Cisco 2800 Series provide two 10/100 on the Cisco 2801 and Cisco 2811 and two 10/100/1000 on the Cisco 2821 and Cisco 2851 Support for Cisco IOS Software The. Add to My Manuals. When used in a Cisco 2600, 3600, or 3700 Series Router, requires a voice / fax network module: NM-1V or NM-2V. Page 5 highlights. Lisa Mildon. 2821 - Integrated Services Router Unified Communications Bundle network router pdf manual download. The information in this document was created from the devices in a specific lab environment. Save this manual to your list of manuals. View the Cisco 2821 manual for free or ask your question to other Cisco 2821 owners. Add to My Manuals. Specifications Table 10 Cisco 2811 Router Specifications Description. See the "Completing the Configuration" section on page 9. Integrated Services Router FIPS 140-2 Non Proprietary Security Policy. Page 119 highlights. Save this manual to your list of manuals. Cisco CISCO2821 User Guide - Page 118. 168. Add to My Manuals. Page 10 highlights. Page 103 highlights. IP phone power is supported if the appropriate AC-input. View all Cisco CISCO2821 manuals. Chassis Views Warning There is the danger of explosion if the battery is replaced incorrectly. UPC - 882658198021. Reading Port and Module LEDs. 100 Mbps Upgradeable to 300 Mbps. Add to My Manuals. Specifications Table 12 Cisco 2851 Router Specifications Description Dimensions (H x W x D) Weight AC input power • Input. I am wondering if I can set this router up strictly for VPN and remote access to offload VPN from the primary router. The following table shows the major features for the Cisco IP Phone 7800 Series. describes how the Cisco 2811 and 2821 Integrated Services Routers (Hardware Version: 2811 or 2821; Firmware Version: IOS 12. Tato příručka je k dispozici v následujících jazycích:Angličtina. Cisco 2821 Service Manual -. Cisco 2821 Manual.