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This chapter describes how to set up the VTA system. Site requirement, package content, setting an IP address, mounting the system, and connecting the VTA to the LAN are also discussed.
The VTA is suited for an office environment where it can be rack-mounted with your other network equipment or free standing.
When deciding where to place the VTA, ensure that:
Your Cisco IP/VC VTA package contains the following:
Inspect the content of the box for shipping damage. Report any damage or missing items to your distributor or reseller.
Before you place the unit on the network, you must assign it an IP address. You can set the IP address via the serial port of a computer. This section describes how to use the serial port to configure the unit with IP address information. You will need to obtain the items or information to set the address:
To set the IP address, perform the following steps:
Step 1 Locate the serial cable shipped with the gateway and connect the connector labeled PC to the serial port on the computer and the connector labled Unit to the serial port connector on the gateway front panel.
Step 2 Connect the power cable to the gateway and a power outlet.
Step 3 Start the terminal emulator on the computer.
Step 4 Power on the unit. The gateway's internal software scrolls down the console.
Step 5 When the message Press any key to start configuration appears on the screen, press any key within six seconds. An options list appears.
Step 6 At the prompt, type 1 and press Enter to select the for configuration of default ethernet port value option. This option allows you to set the IP address information. configure the default port values. The prompt Enter Default Interface Number appears.
Step 7 At the prompt, type 1 forport 1. Press Enter. The Enter IP Address for Interface No 1 prompt appears.
Step 8 Enter the IP address you want to assign to the unit and press Enter. The Enter Default Router IP address prompt appears.
Step 9 Enter the IP address of the router associated with the segment in which the unit will be installed and press Enter. The Enter IP Mask <HEX> prompt appears.
Step 10 If the unit will be associated with a subnet mask, convert the subnet mask IP address to hexidecimal at the prompt and press Enter. You can use the computer's desktop calculator to convert the submask ID to hexidecimal.
The program writes the information to the unit's firmware.When the activity stops, exit the configuration software and unplug the unit. Install the unit on the network in the appropriate segment.
You can install the VTA in a 19-inch rack or stack the unit with others up to four deep. The mounting kit supplied with the VTA includes two brackets for mounting the unit on a rack. This section describes how to install the brackets for mounting the unit on a 19-inch rack.
To attach the mounting brackets, perform the following steps:
Step 1 Place the VTA right-side up on a hard flat surface, with the front panel facing you.
Step 1 Position a mounting bracket over the mounting holes on one side of the VTA, as shown in Figure 3-1.
Step 2 Pass the two screws through the washers and bracket holes, inserting them into the inside of the VTA and tighten them securely with a suitable screwdriver.
Step 3 Repeat Steps 1 and 2 for the other side of the VTA.
Step 4 Insert the unit into the 19-inch rack and secure with suitable screws. Two screws are needed for each side. These are not provided with the VTA.
Step 5 Verify the air vents at the sides of the VTA are not blocked. See the "Cables" section next in this chapter.
The VTA uses the following cables:
The VTA receives AC power through a standard power cable with a grounded three-prong plug. Before you connect the unit to the power, make sure the power source voltage is between 100-240 VAC.
Before you switch on the VTA, verify that:
 | Warning Do not use an extension cord (power cable) without a protective conductor (grounding). The VTA can become dangerous when you interrupt any of the protective (grounding) conductors or disconnect any of the protective earth terminals. Intentional interruption is prohibited. |
A power cable with a plug suited to your country may be supplied with the VTA. If a plug is not provided, attach a grounded plug that is appropriate to your area. The main power cord has a molded IEC socket that connects to the VTA's power inlet. Wire the national standard power plug as follows:
To connect the power cable to the VTA, perform the following steps:
Step 1 Make sure that the power switch on the rear panel is off.
Step 2 Plug the power cord into the power socket on the rear panel of the VTA.
Step 3 Connect the three-prong power cable plug to a grounded AC outlet.
The VTA has one 10BaseT, IEEE 802.3 LAN port (RJ-45 socket). Use a straight-through Ethernet cable (maximum length 15 m.) with RJ-45 connectors to connect the cable to the 10BaseT LAN hub or switch. For information on cables, see the "Hardware Specifications" appendix.
To connect the VTA to the LAN, perform the following steps:
Step 1 Connect the RJ-45 8-pin connector of the straight through Ethernet cable to the VTA's LAN port 1.
Step 2 Connect the other connector to a 10BaseT hub.
The V.35/EIA/TIA-366 Y-cable connects the VTA to the H.320 room system. It has one 26-pin male connector that divides into a V.35 female (Winchester) connector and an EIA/TIA-366 female connector; (see Figure 3-2 and Figure 3-3).
Insert the 26-pin male connector into port 1 on the rear panel of the VTA. Connect the V.35 female connector to the male V.35 connector on the cable that attaches to the room system; connect the EIA/TIA-366 female connector to the corresponding EIA/TIA-366 connector that attaches to the room system.
If you are sending two-channel (2B) calls, connect the second Y-cable to VTA port 2 and connect the V.35 and EIA/TIA-366 connectors to the appropriate connectors on the cable that attaches to the corresponding room system port (or ports).
The console (serial) port on the front of the VTA is used to connect the VTA to a PC or modem. Use a null modem (crossover) cable to connect the console port's female 9-pin D-type connector to the configuration PC or modem. For information, see the"Cable Connectors and Pinouts" appendix.
You need to connect the VTA console port to a PC in order to configure the VTA IP address and subnet mask, and perform the Remote Diagnostics utility. You can use any standard terminal emulator software on the PC.
To connect the VTA console port to a PC, perform the following steps:
Step 1 Verify the terminal software used on the PC has the following communications parameters:
Step 2 Connect the 9-pin male connector of the null modem cable to the VTA console port.
Step 3 Connect the 9-pin female connector to the PC serial port (COM 1).
Step 4 Run the terminal emulator and press Ctrl-X to restart the VTA.
Connect the VTA console port to a modem for remote diagnostics. The external modem connected to the VTA should be a standard modem and should be configured as follows:
To connect the VTA's console port to a modem, perform the following steps:
Step 1 Verify the modem configuration parameters are as specified above.
Step 2 Connect the 9-pin male connector of the cable to the VTA's console port.
Step 3 Connect the 25-pin female connector on the other end of the cable to the modem.
Step 4 For remote diagnostics, create a normal dial-up connection. See the "Creating a Dial-Up Connection to the VTA" section in the "Monitoring the VTA" chapter.
Posted: Fri Nov 12 19:47:25 PST 1999
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