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This chapter describes how to install the Cisco Integrated Communications System (ICS) 7750 chassis and describes how to get information to install peripheral equipment such as Catalyst switches and Cisco IP Phones. This chapter includes the following sections:
This section describes mounting instructions for the Cisco ICS 7750 and the Catalyst switches. The system can be rack-mounted or installed on a desktop.
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Warning Two people are required to lift the chassis. To prevent injury, keep your back straight and lift with your legs, not your back. |
The system ships with an cable management bracket, shown in Figure 3-1, that you can attach to the chassis with the three Phillips screws (6-32 x 0.375") included with the bracket, as shown in Figure 3-2.
This section describes how to rack-mount the system chassis and refers you to documentation for rack-mounting the Catalyst switches.
The Cisco ICS 7750 should be rack-mounted in a standard 19-inch rack. This section describes how to front-mount or mid-mount the chassis in a rack.
The chassis ships with a rack-mounting kit that includes the following items:
Plan the system installation so that the weight of the equipment is evenly distributed in the rack and that the heaviest units are toward the bottom of the rack.
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Warning The plug-socket combination must be accessible at all times because it serves as the main disconnecting device. |
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Warning To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety: |
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Caution Use only the screws included in the rack-mount kit to install the system in a rack. Using screws other than those in the rack-mount kit, especially screws longer than one-half inch, can damage the chassis and its internal components. |
Take these steps to rack-mount the chassis.
Step 2 Lift and slide the chassis into the front of the rack.
Step 3 Use the eight, 10-32 x 1/2" Phillips screws to securely attach the brackets to the rack.
Step 4 Ground the chassis according to the instructions in "Grounding the System" later in this chapter.
This section describes how to install the Cisco ICS 7750 on a desktop and how to use the included desktop-mount kit to stack up to two Catalyst switches on top of the chassis.
You will need the following items for a desktop installation:
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Warning Do not stack the chassis on any other equipment. If the chassis falls, it can cause severe bodily injury and equipment damage. |
Take the following steps to prepare the chassis for a desktop installation:
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Warning Two people are required to lift the chassis. To prevent injury, keep your back straight and lift with your legs, not your back. |
Step 2 Attach the included rubber feet to the four recessed areas (one at each corner) on the bottom of the chassis, to prevent the chassis from sliding across a surface.
Step 3 Place the chassis on a flat, secure surface.
You can stack two Catalyst switches on the Cisco ICS 7750 in a desktop configuration. Use the two chassis-to-switch brackets (see Figure 3-4) to attach the first Catalyst switch to the top of the chassis, as shown in Figure 3-5. To add one more switch to the top of the first switch, use the two switch-to-switch brackets to attach the additional switch, as shown in Figure 3-6.
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Caution If you are using more than two switches with the Cisco ICS 7750, the chassis and the switches should be mounted in a rack. For instructions on rack-mounting the Cisco ICS 7750, see "Rack-Mounting" earlier in this chapter. For instructions on rack-mounting Catalyst switches, refer to the "Installation" chapter in the installation guide that came with the switch. |
The system must be grounded before installing any subsystem cards and before powering on the system. Follow the electrical wiring guidelines in this section to make sure the system is correctly grounded.
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Warning This equipment needs to be grounded. Use a green and yellow 14 AWG ground wire to connect the host to earth ground during normal use. |
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Warning When installing the unit, the ground connection must always be made first and disconnected last. |
Before grounding the chassis (and the uninterruptible power supply [UPS], if required), verify that your electrical AC panel is configured as shown in Figure 3-7. This is to ensure that your system can be correctly grounded and powered.
There are two possible grounding configurations for the Cisco ICS 7750:
Complete the following steps to ground the chassis:
Step 2 Connect the ground wire to the grounding lug.
Step 3 Tighten the nut on the grounding lug. If you are not using a UPS, skip to Step 5.
Step 4 Connect the ground wire to the grounding lug on the UPS.
Step 5 Connect the ground wire to the electrical (AC) outlet.
Step 6 Power on the chassis following the "Cisco ICS 7750 Power Supply Use Guidelines" in Chapter 4, "Cisco ICS 7750 Power Information."
This section describes how to connect to subsystem card ports.
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Note Connect the WIC, VWIC, and VIC ports on the MRP cards according to the instructions in the Cisco WAN Interface Card Hardware Installation Guide. |
The number of ports available to network equipment depends on the cabling redundancy that you implement. Use the supplied crossover Ethernet cables to connect both ports on the system switch processor (SSP) card to the Catalyst switch 10/100 ports.
If you are using more than one Catalyst switch in your system, connect each SSP port to a different Catalyst switch to ensure redundancy between the Cisco ICS 7750 and the Catalyst switches. This section describes configurations for connecting the card ports to the switches.
In this configuration, illustrated in Figure 3-11, the Catalyst 3524-PWR XL switches have 1000BaseX GBIC modules and GigaStack Gigabit Interface Converter (GBIC) modules installed.
Each switch is connected to the one above it and below it through the GigaStack GBIC module ports, using the 50-cm cable supplied with the GigaStack GBIC module. The crossover Ethernet cables connect the SSP card to two different switches in the switch stack for redundant connectivity. The GigaStack GBIC module ports are available for high-speed connections to network resources.
In this type of configuration, 10/100 ports not connected to the SSP can be used to connect to local Cisco IP Phones, printers, servers, and workstations. Up to nine switches can be connected this way, supporting up to 214 connections.
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Note Refer to the installation guide that came with your switch for instructions on connecting to the switch and module ports. |
In this configuration, illustrated in Figure 3-12, the Catalyst switches are connected by using the 10/100 switch ports. This configuration can be used for switches that do not have1000BaseX or GigaStack GBIC modules installed. Use crossover cables to interconnect the 10/100 switch ports. Two crossover cables are included in the hardware accessory kit for connecting the two SSP ports to a switch. You must provide any additional crossover cables required for your configuration.
In this configuration, the Catalyst switch on the top functions as an aggregator and is star-wired to the SSP and the other switches in the stack, ensuring optimal performance. The four bottom switches are cascaded to provide a redundant path if the aggregator switch fails.
This type of configuration reduces the number of switch ports available for connecting to local Cisco IP Phones, printers, servers, and workstations. Up to nine switches can be connected this way.
This section describes how to connect to the system alarm processor (SAP) card ports.
There are several optional ways to connect to the SAP card console port:
Connect to the SAP card COM ports as follows:
After you have installed the system chassis and connected subsystem cards as described in "Preparing for Installation" and you are ready to connect power, follow the procedures in this section.
Figure 3-13 shows a recommended power configuration that uses a UPS to provide backup power to the Cisco ICS 7750 and a Cisco Redundant Power System (RPS) 300 to connect to two Catalyst 3524-PWR XL switches.
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Note For information about other power configurations, see "Cisco ICS 7750 Power Information." |
Step 2 If you are using the Cisco RPS 300 in your system, connect the RPS connector on the first Catalyst switch to any of the DC outlet connectors on the RPS. Repeat this step for all Catalyst switches connected to the Cisco ICS 7750.
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Note Each RPS provides redundant power for one Catalyst switch at a time. If a switch power supply fails and is backed up with the RPS, that RPS cannot support any additional failed switches. For absolute redundancy, each switch requires one RPS. |
Step 3 Connect the AC power connector on the first Catalyst switch to any AC power connector on the UPS. Repeat this step for all Catalyst switches connected to the Cisco ICS 7750.
Step 4 If you are using the Cisco RPS 300 as part of your system, make one of the following connections:
The RPS starts up after Step 4.
Step 5 Use the included power cables to connect the power supply modules (one or two) to one of the power sockets on the UPS.
Step 6 Connect the connector on the UPS to a wall power-outlet at your site.
Follow these steps to turn on power to the system.
Step 2 For one or both power supply modules installed in your system, press the power supply switch to on ( | ).
After the chassis has been connected to power supplies and turned on, you can verify that the system is functioning correctly by checking certain LEDs on the subsystem cards and power supply modules.
To verify that the Cisco ICS 7750 is correctly installed and running, check that LEDs are functioning as described in Table 3-1.
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Note The ALARM LED on system cards comes on (solid yellow) during the power-on self-test. If the ALARM LED on any card does not go off at the completion of the power-on self-test, that card is not functioning correctly. Refer to Chapter 5, "Solving Hardware Problems," in the Cisco ICS 7750 Administration and Troubleshooting Guide. |
| Card | LED | Verify the Following: |
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SAP | STATUS |
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SAP | PWR1 | Solid green when the power supply module is operating correctly and supplying power to the system. (If there are two power supply modules installed, check both the PWR1 LED and the PWR2 LED.) |
SSP | STATUS |
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SSP | 1X |
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SSP | 2X |
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MRP | STATUS |
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MRP | SLOT 0 | Check this LED on all MRP cards that have a WIC or VIC installed in Slot 0:
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MRP | SLOT 1 | Check this LED on all MRP cards that have a WIC or VIC installed in Slot 1:
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SPE | STATUS |
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WIC or VIC cards | Depends on card | Refer to the Cisco WAN Interface Card Hardware Installation Guide to verify the LED activity for the specific cards you installed in your Cisco ICS 7750. |
This section describes how to determine and issue the correct initialization string for your modem and configure your modem with it.
Modem command sets vary widely. Although most modems use the Hayes command set (prefixing commands with AT), Hayes-compatible modems do not use identical AT command sets.
Refer to your modem manufacturer's documentation to learn how to examine the current and stored configuration of the modem you are using. Generally, you enter AT commands such as &v, i4, or *o to view, inspect, or observe the settings.
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Note You must first create a direct Telnet or connection session to the modem before you can send an initialization string. You can use AT&F as a basic modem initialization string in most cases. |
A sample modem initialization string for a US Robotics Courier modem is as follows:
&b1&h1&r2&c1&d3&m4&k1s0=1
Modem initialization strings enable the following functions:
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TimeSaver Initialization strings for other modems are listed in the appendix "Configuring Modem Strings and Chat Scripts" in the Dial Solutions Command Reference publication. |
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Note Ensure that automatic baud rate detection is turned off to ensure that the modem speed is not changed. |
Modems differ in the method they use to lock the serial port speed. In the modem documentation, vendors use terms such as, port-rate adjust, speed conversion, or buffered mode. Enabling error correction often puts the modem in the buffered mode. Refer to your modem documentation to see how your modem locks speed (check the &b, \j, &q, \n and s-register settings).
Ready-To-Send (RTS) and Clear-To-Send (CTS) signals must be used between the modem and the system to control the flow of data. Incorrectly configuring flow control for software or setting no flow control can result in hung sessions and loss of data. Modems differ in the method they use to enable hardware flow control. Refer to your modem documentation to see how to enable hardware flow control (check the &e, &k, &h, &r, and s-register settings).
The modem must use the data carrier detect (DCD) wire to indicate to the system when a session has been negotiated and is established with a remote modem. Most modems use the setting &c1. Refer to your modem documentation for the DCD settings used with your modem.
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Note DCD is cross-wired in the cable to data set ready (DSR) on the console port. See "Console Port" in Appendix C, "Cable and Connector Pinouts" for additional information. |
The modem must interpret a toggle of the data terminal ready (DTR) signal as a command to drop any active call and return to the stored settings. Most modems use the settings &d2 or &d3. Refer to your modem documentation for the DTR settings used with your modem.
If a modem is used to service incoming calls, it must be configured to answer a call after a specific number of rings. Most modems use the setting s0=1 to answer the call after one ring. Refer to your modem documentation for the settings used with your modem.
This section defines other settings that might be needed or desirable depending on your modem.
Error correction can be negotiated between two modems to ensure a reliable data link. Error correction standards include link access procedure for modems (LAPM) and Microcom Networking Protocol Class 4 (MNP4). V.42 error correction allows either LAPM or MNP4 error correction to be negotiated. Modems differ in the way they enable error correction. Refer to your modem documentation for the error correction methods used with your modem.
Data compression can be negotiated between two modems to allow for greater data throughput. Data compression standards include V.42 bis and MNP5. Modems differ in the way they enable data compression. Refer to your modem documentation for the data compression settings used with your modem.
This section explains how to initialize a modem.
The steps below demonstrate how to configure a U.S. Robotics Courier modem on line 1 (decimal number 2000 + line number 1 = 2001).
C7750(config)# ip host modem1 2001 172.16.1.10 C7750(config)# exit C7750#
Step 2 Establish a direct Telnet session to the modem:
C7750# telnet modem1 Trying modem1 (172.16.1.10, 2001)... Open
Step 3 (Optional) Return the modem to its factory defaults:
at&f OK
Step 4 Configure the modem with an initialization string. The following example string is for a U.S. Robotics Courier modem:
at&b1&h1&r2&c1&d3&m4&k1s0=1 OK
Step 5 Store the modem settings in NVRAM on the modem:
at&w OK
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Note Some modems need to be "strapped" so that they start up with saved settings when powered on, rather than using defaults. Make sure that your modem is strapped accordingly. |
Step 6 Suspend and disconnect your Telnet session:
- suspend keystroke - C7750# disconnect Closing connection to modem1 [confirm] y C7750#
Test your modem connectivity to make sure that dial-in access is properly configured. The following is an example of a successful connection from a PC using a U.S. Robotics Courier modem to dial in to an MRP card:
at&f&c1&d3&h1&r2&b1&m4&k1&w OK atdt9,5551234 CONNECT 28800/ARQ/V32/LAPM/V42BIS User Access Verification Username: janedoe Password: C7750>
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Note The same configuration issues exist between the client data terminal equipment (DTE) and client modem. Make sure that you have the correct EIA/TIA-232 cabling and modem initialization string for your client modem. |
Any data network equipment, including desktop PCs, servers, and Cisco IP Phones that you will use on the same LAN as the Cisco ICS 7750 should be connected to the system through the ports on the Catalyst switches.
The Catalyst 3524-PWR XL 10/100 ports can supply inline power to Cisco IP Phones across the Ethernet cable that connects the phones to the switch.
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Caution Before connecting Cisco IP Phones to the Catalyst 3524-PWR XL switches, refer to the Catalyst 3500 Series XL Hardware Installation Guide. |
This section describes the procedures for the following subsystem components:
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Note If the chassis has any empty slots, they will be covered with blank panels when the Cisco ICS 7750 is shipped to you. Do not remove a panel covering an empty slot until you are ready to install a card in the slot. |
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Note You do not have to disassemble any system component or remove the chassis from the rack to perform any of the procedures described in this section. |
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Warning Removing I/O cards, CPU cards, fans, and power supply modules can expose you to high-energy (high-amperage) circuits and possible ejection of molten metal, or to the shock hazard of telephony circuit voltages. Be sure to remove all rings, watches, and other jewelry from fingers, wrists, and arms before removing panels and devices. |
This section describes how to remove the SPE, MRP, SSP, and SAP cards from the chassis and how to reinstall them. Because the system is a hot-swap system, you do not need to turn off power for these procedures.
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Caution You can install only one SAP and one SSP card in a single chassis. If you must hot swap the SAP, the cooling fans do not operate, and the system's ability to detect alarms associated with the operating environment, fans, and power supply modules is degraded until an operational SAP is properly re-inserted in the chassis. If you must hot swap the SSP, the system loses LAN connectivity, and calls being made from or to Cisco IP Phones that are routed through that SSP are disconnected until an operational SSP is properly re-inserted in the chassis. |
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Note Depending on your system configuration, hot swapping SPEs or MRPs can adversely affect users connected to the system. For example, if Cisco CallManager is running on only one SPE, hot swapping that SPE disconnects calls to or from the PSTN and prevents the system from processing further PSTN traffic until an operational SPE is properly re-inserted in the chassis. Similarly, hot swapping an MRP that is in the process of routing voice or WAN traffic prevents that traffic from reaching its destination. Contact your Cisco sales representative for guidelines on installing cards and software on your system for maximum availability and redundancy. |
Follow these steps and refer to Figure 3-14 to remove a Cisco ICS 7750 subsystem card:
Step 2 Completely loosen the card captive screws.
Step 3 Press the SHTDN button, and confirm that the STATUS LED on the card first blinks, and then goes off.
Step 4 After the STATUS LED turns off, press the upper and lower ejector levers outward at the same time to eject the card.
Step 5 Gently pull the card from the chassis.
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Caution When installing subsystem cards into the chassis, be sure to apply equal amounts of pressure to the top and bottom of the card. You can damage the card and the chassis backplane if you apply too much pressure to either the bottom or the top of the card. |
Follow these steps, and refer to Figure 3-15 to install a Cisco ICS 7750 subsystem card:
Step 2 With the top and bottom edges of the card in the card guides, gently slide the card into the chassis until you feel resistance. Because there are grounding clips near the front and rear of the card guides, you might need to increase the amount of force that you use to get the card past the grounding clips, particularly if this is the first time a card has been inserted in this slot. If you encounter extreme resistance, pull the card out slightly and push it back in again.
Step 3 Press the upper and lower ejection levers inward at the same time until they lock into their slots. This step firmly seats the card into the chassis.
Step 4 Repeat Steps 1 through 3 to install additional cards.
Step 5 When all cards have been installed, completely tighten the card captive screws on the top and bottom of the panel.
Cisco ICS 7750 power supply modules are hot-swappable. The power supply module remains off until it is firmly seated.
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Warning Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord. |
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Warning Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is off and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. |
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Warning This unit might have more than one power cord. To reduce the risk of electric shock, disconnect the two power supply cords before servicing the unit. |
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Caution If your system has only one power supply module installed and you need to hot-swap the power supply module, install the new power supply module before removing the old one. |
When two power supply modules are installed in the chassis, you can install or remove one power supply module or turn on or off one power supply module without affecting system performance.
Follow these steps, and refer to Figure 3-16 to remove a power supply module from the chassis:
Step 2 Grasp the handle on the front of the power supply module, and gently pull the unit straight out of the chassis until it releases from the backplane connector.
Step 3 Continue to pull the unit out until it is free of the chassis.
Follow these steps to install a new power supply module:
Step 2 Slowly push the unit toward the rear of the chassis until the power supply module connector aligns with the connector on the backplane. Do not force the connection.
Step 3 Continue to push the power supply module toward the rear of the chassis until the connector is firmly seated.
Step 4 Tighten the two screws located on the top and bottom of the power supply module.
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Caution Do not operate the system for more than 1 minute with the fan unit removed. |
You do not need to remove power for this procedure. Follow these steps, and refer to Figure 3-17 to remove the cooling fans:
Step 2 Grasp the front of the fan tray and slowly pull the tray out of the chassis. Support the fan tray from the bottom, and lift the back edge of it over the front lip of the chassis.
Follow these steps to install a new fan tray:
Insert the unit with a single, steady motion. Bouncing the fan tray during insertion might cause an alarm condition in the system. The unit should not be forced into the slot.
Step 2 Tighten the two captive screws located on the bottom front of the fan unit.
Posted: Mon Oct 2 13:32:52 PDT 2000
Copyright 1989-2000©Cisco Systems Inc.
