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This chapter describes the tasks necessary to connect your PC or hub through the router to an ISDN line and connect a PC or ASCII terminal to the router for configuration purposes.
Before you begin, it is important to know if the device you are connecting to a hub or a node. Basically, a hub is a device that connects three or more nodes. Nodes are everything else, such as network interface cards (NICs) installed in PCs. For additional information on hubs and nodes, see the "HUB/NODE Switch" section in "Concepts and Descriptions."
To install your Cisco 700 series router, you must perform the following tasks:
The Ethernet ports are marked in yellow on the back panel.
 | Caution Do not connect the yellow Ethernet ports on your router to any other port or device, except another Ethernet port. Connecting the cable to the wrong port can damage your router. |
To connect Ethernet devices to the router, complete the following steps:
Step 1 If you are connecting to a node, or if you are connecting a Cisco 761, Cisco 762, Cisco 765, Cisco 771, Cisco 772, or Cisco 775 router to a hub, connect the yellow Ethernet cable to the yellow port labeled ETHERNET on the rear panel.
If you are connecting a Cisco 766 or Cisco 776 router to a hub, connect an Ethernet crossover cable (not supplied) to any open Ethernet port.
Step 2 Connect the other end of the cable to the Ethernet connector on the LAN device, such as the Ethernet port of the NIC on the back of your computer.
(See Figure 3-1.)
Step 3 Set the HUB/NODE switch if you are connecting a Cisco 700 series router other than a Cisco 766 or Cisco 776 router.
(a) If your router is connected to another device, such as a NIC in a PC, set the switch in HUB position.
(b) If your router is connected to an Ethernet hub, set the switch in NODE position. (Cisco 766 or Cisco 776 routers do not have a HUB/NODE switch.)
The procedure to connect an ISDN line depends on the router and in some cases your location. The following sections describe each.
Outside of North America, you might need to provide an external network terminator type 1 (NT1) and the ISDN U cable that connects the NT1 to the ISDN wall jack. Contact your telephone service provider and ask for the following information:
Inside North America, if you have a 761, 765, 771, or 775, you must provide an external NT1 and the ISDN U cable that connects the NT1 to the ISDN wall jack. Contact your telephone service provider for a list of NT1 vendors. If you have a 762, 766, 772, or 776, you can use the internal NT1 in the router.
 | Warning Network hazardous voltages are present in the ISDN cable. If you detach the ISDN cable, detach the end away from the router first to avoid possible electric shock. Network hazardous voltages also are present on the system card in the area of the ISDN port (RJ-45 connector), regardless of when power is turned to standby. |
| Warning Do not work on the system or connect or disconnect cables during periods of lightening activity. |
| Warning To reduce the risk of fire, use only No. 26 AWG or larger telecommunications line cord. |
The S/T port connects to some telephone service provider networks using an external NT1. The need for an external NT1 is determined by your telephone service provider network.
| Caution Always connect the orange cable to the orange S/T port on the router. Do not connect the cable to a yellow Ethernet port. This will damage your router. |
To connect an ISDN line to the S/T port of a router when your telephone service provider said that an NT1 is not required, complete the following steps:
Step 1 Connect the orange S/T cable to the orange port labeled S/T on the rear panel of your router.
Step 2 Connect the other end of the orange S/T cable to the ISDN wall socket. (See Figure 3-2.)
To connect an ISDN line to the S/T port of a Cisco 761, Cisco 762, Cisco 765, Cisco 771, Cisco 772, or Cisco 775 router when your telephone service provider said that an NT1 is required, complete the following steps:
Step 1 Connect the orange ISDN S/T cable to the orange port labeled ISDN S/T on the rear panel of your router.
Step 2 Connect the other end of the orange ISDN S/T cable to the NT1.
Step 3 Connect the ISDN cable provided with the NT1 to the NT1.
Step 4 Connect the other end of the ISDN cable to the ISDN wall jack.
(See Figure 3-3.)
The U port connects to the telephone service provider network using the internal NT1. Figure 3-4 shows the ISDN U port connection.
| Caution Always connect the red cable to the red U port on the router. Do not connect the cable to a yellow Ethernet port. This will damage your router. |
To connect an ISDN line to the U port on a router, complete the following steps.
Step 1 Connect the red ISDN U cable to the red port labeled ISDN U on the rear panel of your router.
Step 2 Connect the other end of the red ISDN U cable to the ISDN wall socket. (See Figure 3-4.)
| Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A U.S. (240 VAC, 16A international) is used on the phase conductors (all current-carrying conductors). |
| Warning This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use. |
To connect the power supply, complete the following steps:
Step 1 Connect the round end of the power supply cable to the black circular power connector on the rear panel of your router.
Step 2 Connect the black power supply cord to the black power supply.
Step 3 Connect the power supply cord to an electrical outlet. (See Figure 3-5.)
When the router is powered on, it is automatically booted, and the router attempts to establish links to the LAN and the WAN.
Compare the LED states with known activity. For example, all LEDs should blink at least once during the boot process, which takes a few minutes. Once the router is booted, you can verify your connections by using the LEDs.
The LAN, CH1, and CH2 LEDs each have companion RDX and TDX LEDs. The RDX and TDX LEDs indicate traffic on the respective channels. Using an application such as a Web browser, verify that the router is receiving data from the WAN. When you access a Web page on the network, the router indicates the transfer of data by turning on the LAN LED and blinking the companion RDX and TDX LEDs. The CH1 LED also turns on and the companion RDX and TDX LEDs blink. The CH2 LED might turn on, depending on the amount of traffic. If the LEDs do not behave as expected, check the physical connections.
Brief descriptions of the LED states as they relate to the physical connections are provided in Table 3-1. All the LEDs are listed, but each router model has a different subset of LEDs.
If your connections are correct and the LEDs are not in the correct state, it might be because the router or PC is not yet configured. If your router is configured and the states are not correct, see "Troubleshooting Cisco 700 Series Routers."
| LED | Connection | Normal Pattern |
|---|---|---|
RDY | Power | On when the router is powered on. Off when the router is powered off. |
NT1 | ISDN U port | On when connected. |
LINE | ISDN U or S/T port | On when connected. |
LAN | Ethernet | On for 1 minute after boot. Off if there is no traffic on the LAN for 1 minute. |
RDX | Ethernet | Off when there is no traffic on the network. On when there is traffic is received from the network. |
TDX | Ethernet | Off when there is no traffic on the network. On when there is traffic is transmitted to the network. |
LINK, LK1, LK2, LK3, LK4 | Ethernet | On when a connection from the Ethernet port to an Ethernet device is established. Blinks while attempting to establish a connection. Off when there is no connection. |
CH1, CH2 | ISDN U or S/T port | On when the router has an active voice or data connection to the WAN or the channel has not yet timed out after the connection was closed. Off when there is no active connection to the WAN and the channel has timed out. |
PH1 and PH21 | Analog telephone, fax, or modem | On when telephone, fax, or modem is in use. Off when not in use. |
| 1You can also pick up the handset and listen for a dial tone. |
You have completed the basic hardware installation. You can add digital or analog telephone devices if desired. For additional information, see "ISDN and Analog Telephone Devices."
If your router has been preconfigured by your vendor or a service provider, you should be able to turn on your PC, enter the configuration parameters for the PC (your service provider or network administrator provides these instructions), and connect to the Internet or your corporate network. Once the connection is established, the installation is complete.
If your router is not preconfigured, gather the information listed in Cisco 700 Quick Reference Guide. This information is commonly available from your ISDN service provider (telephone company) and the network administrator of the central site network or your Internet service provider.
Cisco strongly recommends that you use the Cisco 700 Fast Step Setup application unless you have been instructed to do otherwise. Cisco 700 Fast Step applications are located on the CD-ROM inside the Cisco 700 Quick Reference Guide.
If you are an experienced user and want to use the command-line interface (CLI) to configure the software or have been instructed to do so, refer to the Cisco 700 Series Command Reference for a list of the commands and some configuration examples.
Posted: Tue Feb 23 14:18:41 PST 1999
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