Cisco 1800 Series Hardware Installation (Modular)
Overview of Cisco 1800 Series Routers (Modular)
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Overview of Cisco 1800 Series Routers (Modular)

Table Of Contents

Overview of Cisco 1800 Series Routers (Modular)

Hardware Features

Product Serial Number Location

Cisco Product Identification Tool

Interfaces

Interfaces on the Cisco 1841 Router

Interfaces on the Cisco 1861 Integrated Services Router

Removable and Interchangeable Modules

Memory

LED Indicators

Chassis Ventilation

Real-Time Clock

Chassis Security

Chassis Views

Interface Numbering

Interface Numbering on the 1861 Integrated Services Router

Specifications

Regulatory Compliance


Overview of Cisco 1800 Series Routers (Modular)


Cisco 1800 series integrated services routers (ISR) (modular) are modular routers with LAN and WAN connections that can be configured by means of interchangeable interface cards and advanced integration modules (AIMs). The modular design of the routers provides flexibility, allowing you to configure or reconfigure your router according to your needs.

The Cisco 1841 router is a data-only device for desktop use.

Figure 2-1 shows the Cisco 1841 router.

Figure 2-1 The Cisco 1841 Router

The Cisco 1861 ISR, which is part of the Cisco 1800 series ISR family, is a unified communications solution for small- to medium-sized businesses and enterprise small branch offices that provides voice, data, voice-mail, automated attendant, video, and security capabilities while integrating with existing desktop applications such as calendar, e-mail, and customer relationship management (CRM) programs and with built-in security. It has the following core components:

Integrated Cisco Unified Communications Manager Express or Survivable Remote Site Telephony for call processing for up to 12 users

Optional Cisco Unity Express for voice messaging and automated attendant

Integrated LAN switching with Power over Ethernet (POE) expandable via Cisco Catalyst Switches

Optional support for a range of WAN interface cards

Figure 2-2 and Figure 2-3 show the Cisco 1861 ISR.

Figure 2-2 The Cisco 1861 Integrated Services Router with FXO Ports

1

WAN slot

3

Expansion switch port

2

FXO ports

   

Figure 2-3 The Cisco 1861 Integrated Services Router with BRI Ports

1

BRI ports

3

FXS ports

2

Power over Ethernet (PoE) ports

4

Fast Ethernet (FE) port


This chapter describes the features and specifications of the router and includes the following sections:

Hardware Features

Chassis Views

Interface Numbering

Interface Numbering on the 1861 Integrated Services Router

Specifications

Regulatory Compliance

Hardware Features

This section describes the basic features of Cisco 1800 series routers. It contains the following:

Product Serial Number Location

Interfaces

Removable and Interchangeable Modules

Memory

LED Indicators

Chassis Ventilation

Real-Time Clock

Chassis Security

Product Serial Number Location

The serial number label for the Cisco 1841 router and the Cisco 1861 ISR is located on the rear of the chassis, underneath interface card slot 0. (See Figure 2-4.)

Figure 2-4 Serial Number Location

Cisco Product Identification Tool

The Cisco Product Identification (CPI) tool provides detailed illustrations and descriptions showing where to locate serial number labels on Cisco products. It includes the following features:

Search option allows browsing for models using a tree-structured product hierarchy.

Search field on the final results page makes it easier to look up multiple products.

End-of-sale products are clearly identified in results lists.

The tool streamlines the process of locating serial number labels and identifying products. Serial number information expedites the entitlement process and is important for access to support services.

The Cisco Product Identification tool can be accessed at the following URL:

http://tools.cisco.com/Support/CPI/index.do

Interfaces

This section summarizes the interfaces available on the Cisco 1800 series routers.

Interfaces on the Cisco 1841 Router

The following interfaces exist on the Cisco 1841 router:

Two Fast Ethernet ports (RJ-45 connectors)

High-speed console and auxiliary ports, up to 115.2 kbps each (RJ-45 connectors)

One USB port (version 1.1), intended for future use

Interfaces on the Cisco 1861 Integrated Services Router

The Cisco 1861 Integrated Services Router comes with various possible configurations, based on built-in ports and other hardware features of the Cisco 1861 Integrated Services Router and organized by model.

Table 2-1 lists the labels and descriptions for the WAN, LAN, voice interface card (VIC), and other interfaces, along with the values for these interfaces in the preconfigured router software configuration.


Note In Table 2-1, all slots/ports are numbered right to left, unless otherwise noted.


Table 2-1 Cisco 1861 Integrated Services Router: Interfaces

Description
Label
Value in Software Configuration

Console/Aux port

CONSOLE

Fast Ethernet 10/100 expansion port

EXPANSION

FastEthernet0/1/8

Fast Ethernet 10/100 WAN port

WAN

FastEthernet0/0

Fast Ethernet 10/100 Power over Ethernet (PoE) ports

Power over Ethernet, and ACT 0 LNK to ACT 7 LNK

FastEthernet0/1/0 to 0/1/7

FXS (Foreign Exchange Station) ports

FXS, and
0-3

port 0/0/0 to 0/0/3

FXO (Foreign Exchange Office) ports

FXO, and
0-3

port 0/1/0 to 0/1/3

ISDN BRI ports

B0 - B1

Top-to-bottom, port 0/1/0 to 0/1/1

VLAN number for data network

Vlan1

VLAN number for voice network

Vlan100

Music-on-Hold (MoH) port

voice-port 0/4/0

Compact Flash slot

COMPACT FLASH

flash

(Factory Option) VIC: BRI*

VIC2-2BRI-NT/TE
and 0-1

port 0/2/0 to 0/2/1

(Factory Option) VIC: FXO*

VIC2-2FXO and 0-1

VIC2-4FXO and 0-3

port 0/2/0 to 0/2/1

or

port 0/2/0 to 0/2/3

(Factory Option) VIC: FXS*

VIC3-2FXS/DID and 0-1

VIC-4FXS/DID and 0-3

VIC3-4FXS/DID and 0-3

port 0/2/0 to 0/2/1

or

port 0/2/0 to 0/2/3


* Only one optional VIC can be factory installed in a Cisco 1861 Integrated Services Router.

Removable and Interchangeable Modules

Various optional modules can be installed in the router to provide specific capabilities. These modules can be installed either by inserting them into slots on the chassis, or by opening the chassis and plugging them into connectors inside the chassis.

Flash memory and interface cards fit into slots on the chassis and can be installed or removed without opening the chassis.

There are three types of interface cards for the 1800 series modular routers:

WAN interface cards (WICs)

Voice WAN interface cards (VWICs—in data mode only on the Cisco 1841)

High-speed WAN interface cards (HWICs)

The following components plug into connectors inside the chassis and can be installed or removed only by opening the chassis:

Advanced integration module (AIM)

Synchronous dynamic RAM (SDRAM) small-outline dual in-line memory module (SODIMM)

Table 2-2 summarizes the optional modules:

Table 2-2 Summary of Cisco 1800 Series Removable and Interchangeable Modules 

Model
CompactFlash Memory
Interface Cards
AIMs
SDRAM SODIMM

Cisco 1841

1

2 single-wide cards

1

1


Memory

Cisco 1800 series routers contain the following types of memory:

SDRAM—Serves two functions. It stores the running configuration and routing tables, and it is used for packet buffering by the network interfaces. Cisco IOS software executes from SDRAM.

Flash memory—Stores the operating system software image, configuration files, and log files. It is implemented in an external CompactFlash memory card.

Boot/NVRAM—Serves two functions. It stores the ROM monitor, which allows you to boot an operating system software image from flash memory. It also stores the system configuration file and the virtual configuration register.

Table 2-3 lists the memory specifications for Cisco 1800 series routers.

Table 2-3 Router Memory Specifications for the Cisco 1841 Router

Description
Specification

SDRAM

128 MB, expandable to 384 MB; default is 128 MB

Flash memory

32, 64, or 128 MB; default is 32MB

Boot/NVRAM

2/4 MB flash memory



Note SDRAM and the flash memory are user-upgradable, but the boot/NVRAM is permanently soldered to the router's motherboard and is not upgradable.


Table 2-4 Router Memory Specifications for the Cisco 1861 ISR

Description
Specification

DRAM

512 MB

Flash memory

128 MB


LED Indicators

Table 2-5 summarizes the LED indicators for the Cisco 1841 router that are located in the router bezel or chassis, but not in the interface cards.

For descriptions of the LEDs in the interface cards, see Cisco Interface Card Installation Guide.

Table 2-5 Summary of Cisco 1800 Series LED Indicators  

LED
Color
Description
Location:

SYS PWR

Green

Router has successfully booted and the software is functional.
This LED blinks while booting or in the ROM monitor.

Front

SYS ACT

Green

Blinking when any packets are transmitted or received on any
WAN or LAN, or when monitoring system activity.

Front

CF

Green

On when flash memory is busy. Do not remove the CompactFlash
memory card when this light is on.

Back

FDX (FE 0/0)

Green

On indicates full-duplex operation. Off indicates half-duplex
operation.

Back

100 (FE 0/0)

Green

On indicates a 100-Mbps link. Off indicates a 10-Mbps link.

Back

Link (FE 0/0)

Green

On when the router is correctly connected to a local Ethernet
LAN through Ethernet port 0.

Back

FDX (FE 0/1)

Green

On indicates full-duplex operation. Off indicates half-duplex
operation.

Back

100 (FE 0/1)

Green

On indicates a 100-Mbps link. Off indicates a 10-Mbps link.

Back

Link (FE 0/1)

Green

On when the router is correctly connected to a local Ethernet
LAN through Ethernet port 1.

Back

AIM

Green

On indicates presence of an AIM in the internal AIM slot.

Back


Figure 2-5 summarizes the LED indicators for the Cisco 1861 ISR that are located in the router bezel.

Figure 2-5 LEDs on the Front Panel of the Cisco 1861 Integrated Services Router

1

SYS

Solid green

Online

2

POE

Solid green

Connected

3

VM

Solid green

Online

4

WLAN

Blinking green

Connected


Chassis Ventilation

An internal three-speed fan provides chassis cooling. An onboard temperature sensor controls the fan speed. The fan is always on when power is applied to the router. Under most conditions, the fan operates at the slowest speed to conserve power and reduce fan noise. It operates at the higher speeds when necessary under conditions of higher ambient temperature.

Real-Time Clock

An internal real-time clock with battery backup provides the system software with time of day on system power up. This allows the system to verify the validity of a certification authority (CA) certificate. The backup battery is a socketed lithium battery. This battery lasts the life of the router under the operating environmental conditions specified for the router, and is not field replaceable.


Note If the lithium battery in a Cisco 1841 router should fail, the router must be returned to Cisco for repair. Do not replace the battery yourself. Although the battery is not intended to be field replaceable, the safety agencies require the following warning be included in this document.



Warning There is the danger of explosion if the battery is replaced incorrectly. Replace the battery only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer's instructions. Statement 1015


Chassis Security

The chassis of the Cisco 1841 router is constructed with a KensingtonTM security slot on the back panel. It can be secured to a desktop or other surface by using KensingtonTM lockdown equipment.

Chassis Views

This section contains views of the front and rear panels of Cisco 1841 router, showing the locations of the power and signal interfaces, the interface card slots, and the status indicators.

Figure 2-6 shows the front panel of a Cisco 1841 router. Figure 2-7 shows the back panel.

Figure 2-6 Front Panel of the Cisco 1841 Router

1

System Power (SYS PWR) LED

2

System Activity (SYS ACT) LED


Figure 2-7 Back Panel of the Cisco 1841 Router

1

Input power connection

8

CompactFlash memory card slot

2

On/Off switch

9

CompactFlash (CF) LED

3

Slot 0 (WIC, VWIC—data only, or HWIC)

10

AIM LED

4

Console port

11

USB port

5

Fast Ethernet ports and LEDs

12

Aux port

6

KensingtonTM security slot

13

Chassis ground connection

7

Slot 1 (WIC, VWIC—data only, or HWIC)

   

Interface Numbering

Each individual interface (port) on a Cisco 1841 router is identified by a number. A Cisco 1841 router contains the following wide-area network (WAN) and local-area network (LAN) interface types:

Two onboard Fast Ethernet LAN interfaces

Two slots in which you can install WICs, VWICs (data only), and HWICs.

The numbering format for the slots is interface-type 0/slot-number/interface-number. Table 2-6 summarizes the interface numbering.

Table 2-6 Interface Numbering 

Slot Number
Slot Type
Slot Numbering Range
Example 1

Onboard Ports

Fast Ethernet

0/0 and 0/1

interface fastethernet 0/0

Slot 0

HWIC/WIC/VWIC2

0/0/0 to 0/0/3

interface serial 0/0/0

line async 0/0/0

Slot 1

HWIC/WIC/VWIC2

0/1/0 to 0/1/3

interface serial 0/1/0

line async 0/1/0

1 The interfaces listed are examples only; other possible interface types are not listed.

2 VWICs are data-only in a Cisco 1841 router.



Note On the Cisco 1841 router, the numbering format for configuring an async interface is 0/slot/port. To configure the line associated with an async interface, simply use the interface number to specify the async line. For example, line 0/0/0 specifies the line associated with interface serial 0/0/0 on a WIC-2A/S in slot 0. Similarly, line 0/1/1 specifies the line associated with interface async 0/1/1 on a WIC-2AM in slot 1.


Interface Numbering on the 1861 Integrated Services Router

Each interface (port) on a Cisco 1861 ISR is identified by a number. The Cisco 1861 router contains the following WANLAN interface types:

One onboard Fast Ethernet LAN interface (FastEthernet0/0)

One onboard Ethernet switch

One fixed VIC slot with 4 FXS ports

One fixed VIC slot with 4 FXO or 2 BRI ports

One modular HWIC/WIC/VWIC slot

The numbering format for the slots is interface-type 0/slot-number/port-number. Table 2-7 summarizes the interface numbering.

Table 2-7 Interface Numbering 

Slot Number
Slot Type
Slot Numbering Range
Example 1

Onboard Ports

Fast Ethernet

0/0

interface fastethernet 0/0

Onboad Slot 1

Fast Ethernet Switch

0/1/0 to 0/1/7

interface fastethernet 0/1/0

Fixed HWIC slot 0

FXS

0/0/0 to 0/0/3

voice-port 0/0/0/

Fixed HWIC slot 1

FXO

0/1/0 to 0/1/3

voice-port 0/1/0

BRI

0/1/0 to 0/1/1

Modular HWIC Slot

HWIC/WIC/VWIC

0/3/0 to 0/3/x, where x depends on the card-type.

interface serial 0/0/0

1 The interfaces listed are examples only; other possible interface types are not listed.



Note On the Cisco 1861 ISR, the numbering format for configuring an asynchronous, or async, interface is 0/slot/port. To configure the line associated with an async interface, simply use the interface number to specify the async line. For example, line 0/0/0 specifies the line associated with interface serial 0/0/0 on a WIC-2A/S in slot 0. Similarly, line 0/1/1 specifies the line associated with interface async 0/1/1 on a WIC-2AM in slot 1.



Note If you have specified the use of a private line automatic ringdown (PLAR) off-premises extension (OPX) connection mode for an FXO voice port (with loop resistance less than 8000 Ohm), you must ensure that the soft-offhook option is enabled on the port.

This option allows a stepped offhook resistance during seizure, which avoids overloading the circuit during offhook in the event that ringing voltage is present on the circuit at the same time as the trunk seizure. The stepped offhook resistance is initially set to 800 Ohms, then adjusts to 50 Ohms when ringing voltage is not present.

To enable the soft-offhook command on the port, and to access the connection command with plar opx syntax, see Cisco Command Lookup Tool.


Specifications

Table 2-8 lists the specifications for Cisco 1800 series routers.

Table 2-8 1841 Router Specifications  

Description
Specification

Dimensions without rubber feet
(H x W x D)

1.73 x 13.5 x 10.8 in. (4.4 x 34.3 x 27.4 cm)

With rubber feet, height is 1.87 in. (4.75 cm)

Weight (no modules installed)

6.1 lb. (2.77 kg)

Input voltage, AC power supply
Frequency

100 to 240 VAC, autoranging
47 to 63 Hz

Power consumption

20 W maximum for an unloaded unit.
With two WICs and an AIM installed, power consumption will be
less than 50 W.

Console and auxiliary ports

RJ-45 connectors

Operating humidity

5 to 95%, noncondensing

Operating temperature

32 to 104°F (0 to 40°C)

Nonoperating temperature shock

-13 to 158°F (-25 to 70°C) at 9° F (5° C)/minute minimum

Noise level

Normal operating temperature (< 78° F or 26° C): 34 dBa
From (78° F or 26° C) through (104° F or 40° C): 37 dBa
>104° F or 40° C: 42 dBa

Regulatory compliance

For detailed regulatory compliance information, see
Regulatory Compliance and Safety Information for Cisco 1840
Routers
, which accompanies the router.

Electromagnetic compatibility

FCC Part 15 Class A.

Safety compliance

UL 60950; CSA 60950; IEC 60950; EN 60950; AS/NZS 3260; NOM-019-SCFI-1998.


Regulatory Compliance

For compliance information, see Regulatory Compliance and Safety Information for Cisco 1840 Routers document that accompanies the router.