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After you have assigned the Cisco IP/VC 3530 VTA an IP address and connected it to the network, you must set it up for operation. The setup involves the following steps:
This chapter discusses setup issues and describes how to use the Cisco IP/VC Configuration Utility to configure the VTA for operation. The topics covered include the following:
This section describes how to start the Cisco IP/VC Configuration Utility and how to select a VTA to configure. To select a VTA in the Cisco IP/VC Configuration Utility, perform the following steps:
Step 2 Enter the IP address of the unit you want to configure in the Unit IP field:
a. If the VTA is installed on the same network segment as the computer you are using for configuration, the VTA IP address will appear in the pane. Choose the VTA IP address you want to configure.
b. If the VTA you want to configure is on a different network segment, enter the IP address of the VTA in the Unit IP field.
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Caution The Cisco IP/VC Configuration Utility can assign the IP address you type into the Unit IP field to any Cisco IP/VC device residing on the network segment that does not have an IP address associated with the segment. |
c. Click Next. The Enter Password window appears.
Step 3 Enter the password required to log in to the VTA. The default password is cisco.
Step 4 Click Next. The Configuration Source window appears (see Figure 5-2).
The Configuration Source window provides version information about the VTA hardware and software, allows you to change the password, and allows you to select a VTA configuration set to view or configure. Table 5-1 and Table 5-2 describe the version information. If you want to change the password, click Change Password to access the Change Password dialog box. To configure the VTA, go to the section "Selecting the Configuration Source" later in this chapter.
| Parameter | Description |
Unit Type | The model number of the selected unit. |
Hardware Version | The version of the hardware configuration. |
Software Version | Allows you to view the versions of the embedded software. To view the versions, click the button. The information described in Table 5-2 appears. |
| Software | Description |
Unit Version | The VTA software version. |
Stack Version | The full version number of the H.323 protocol stack used by the unit. |
MIB Version | The version of the proprietary MIB for SNM. |
The configuration parameters that appear in the Cisco IP/VC Configuration Utility are taken from the VTA Flash memory or from a file stored on the local computer. You must choose a configuration source to load into the Configuration Utility.
The Source section in the Configuration Source window lets you choose a configuration source to load. The first time you configure a VTA on the configuration computer, there are two sources listed in the Source list box: Current and Plug & Play.
Current loads the parameters that are currently set in the VTA Flash memory into the Configuration Utility. Plug & Play loads default VTA parameters that are stored in the Configuration Utility folder and copied to the hard disk during installation. The Plug & Play parameters can be used to restore the original configuration.
You can modify the parameters loaded into the Configuration Utility and upload the changes to the VTA Flash memory. The utility allows you to save the changes as a set. Save the set under a unique name. The set name is added to the Configuration Utility Source list box and can be selected to configure other VTAs when the current computer is used.
To select a source, perform the following steps:
Step 2 Choose the source you want to load. The source you choose appears in the Choose Source field. Current is the default selection.
Step 3 Click Unit Setup. The source information loads into the configuration utility and the Accepting Nodes window appears. The window displays the IP address of the unit you have selected and shows the progress of the file being loaded. The Unit Identification window appears after the file loads.
The Unit Identifications window (see Figure 5-3) displays information regarding the selected VTA. It allows you to specify the physical location of the VTA and to set a time differential when the unit is located in another time zone.
Table 5-3 describes the Unit Identifications parameters.
| Category | Description |
Unit's Name | Product name (read-only). |
Location | Area where the unit is physically placed. |
Contact | The Cisco URL (read-only). |
Description | The VTA model number (read-only). |
Date/Time | Opens the Date/Time Settings dialog box where you can view and set the time differential when the unit is located in a different time zone. |
You can enter text in the Location field. We recommend that you enter a description of the location where the unit resides in the Location field and click Next. The Network Parameters window appears.
The Network Parameters window (see Figure 5-4) lets you set parameters the VTA will use to communicate over the network.
To set the network parameters, perform the following steps:
Step 5 In the Phone Number field, enter the E.164 address you want the VTA to use. The address can have up to 12 digits and may be the phone number currently assigned to the room system. The VTA will register this address and variants thereof with the gatekeeper for address resolution and bandwidth selection (see the "VTA Bandwidth Services" section later in this chapter).
Step 6 Click Next. The LAN Port Settings window appears.
To change the VTA IP address information and status, perform the following steps:
Step 2 To change the IP mask for the VTA, type the new IP mask into the IP Mask field.
Step 3 You can type a brief comment of up to 31 letters in the Description field.
Step 4 To disable the LAN port, check the Enable check box at the top of the window. This takes the VTA offline, and the room system will not be able to place nor receive calls. The VTA is enabled by default.
Step 5 Click Next. The Dialing Parameters window appears.
The Dialing Parameters window (see Figure 5-5) lets you set parameters the VTA will use for incoming and outgoing calls.
To set parameters you want the VTA to use, perform the following steps:
Step 2 In the Outgoing Default Bandwidth field, select the default bandwidth you want the VTA to use for outgoing calls. The VTA will reserve this bandwidth for all outgoing calls unless the user specifies a different bandwidth using the predefined prefixes for outgoing calls described in the "VTA Bandwidth Services" section later in this chapter.
Step 3 In the Incoming Default Bandwidth field, select the bandwidth you want the VTA to use for incoming calls. The VTA will accept only incoming calls that use this bandwidth unless the caller specifies a different bandwidth using one of the predefined suffixes for incoming calls described in the "VTA Bandwidth Services" section later in this chapter.
Step 4 Click Next. The Save Setup window appears.
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Note We recommend that you set outgoing and incoming default bandwidths to the same value. We recommend setting the default bandwidth to 384 kbps for maximum quality. Users can use the predefined prefixes and suffixes to specify a different bandwidth when the call is placed. |
The VTA does not negotiate with other endpoints to find a common bandwidth for calls. It insists that calls use the fixed bandwidths the administrator sets for outgoing and incoming calls. For call bandwidth flexibility, the call initiator can insert predefined VTA prefixes or suffixes into the dial string. These prefixes and suffixes instruct the VTA to use an alternative bandwith for outgoing and incoming calls. Thus, the caller can set the bandwidth the call will use.
A prefix and suffix is associated with each bandwidth the VTA supports. Prefixes are used for outgoing calls. Suffixes are used for incoming calls. Table 5-4 shows the predefined prefixes mapped to bandwidths that can be used to make outbound calls. Table 5-5 shows the predefined suffixes mapped to bandwidths that can be used to make inbound calls.
When the VTA registers with the gatekeeper, it registers variations of the E.164 address assigned to the VTA/room system for each bandwidth service the VTA provides. The default bandwidth is associated with the original E.164 address. The remaining bandwidths are associated with the E.164 address appended with the appropriate prefix or suffix. To select a bandwidth other than the default bandwidth, the outbound or inbound caller appends the appropriate prefix or suffix to the recipient number. The gatekeeper reads the prefix or suffix as part of the E.164 address and directs the call to the VTA. The VTA reads the entire address and selects the appropriate bandwidth to use for the call.
| Bandwidth | VTA Service Prefixes |
|---|---|
2 x 64 kbps (2B) | #00 |
128 kbps | #10 |
256 kbps | #20 |
384 kbps | #30 |
768 kbps | #70 |
2 x 56 kbps (2B) (restricted) | #01 |
112 kbps (restricted) | #11 |
224 kbps (restricted) | #21 |
336 kbps (restricted) | #31 |
672 kbps (restricted) | #71 |
| Bandwidth | VTA Service Suffixes |
|---|---|
2 x 64 kbps (2B) | 00 |
128 kbps | 10 |
256 kbps | 20 |
384 kbps | 30 |
768 kbps | 70 |
2 x 56 kbps (2B) (restricted) | 01 |
112 kbps (restricted) | 11 |
224 kbps (restricted) | 21 |
336 kbps (restricted) | 31 |
672 kbps (restricted) | 71 |
This section describes how to save the parameters you have set to a file and how to upload the file to the VTA programmable memory.
You can save the parameters as a configuration set and upload the parameters to the VTA Flash memory. The set is stored in the Cisco IP/VC directory on the current computer and can be used to restore the configuration to the current VTA and to configure other VTA units. The name you use to save the set appears in the Source list in the Configuration Source window.
Whether you save the configuration set or not, if you want the VTA to use the parameters in the set you must upload the set to the VTA Flash memory. The upload uses all of the parameters you have set or viewed to replace the current VTA settings.
To save the set and upload the configuration to the VTA Flash memory, perform the following steps:
a. If you want to save the set, enter a name you want to use for the configuration set (to update an existing set, click the arrow and choose the set name) and click Yes. The Confirm window appears.
b. If you do not want to save the set, click No. The Confirm window appears.
Step 2 If you want to write the parameters to the VTA Flash memory, click Yes. The set uploads.
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Note If there is an ongoing call when you try to upload the configuration parameters, a warning is displayed. If you choose to upload the parameters anyway, the VTA disconnects the call. |
Step 3 The Information message box appears when the upload completes. Click Ok. The Confirm window appears.
Step 4 The Confirm window lets you exit the configuration utility. Click Yes to exit.
The VTA restarts upon the uploading of the new configuration. Wait for the VTA to complete the restart process before you operate it. The unit may take longer to restart than indicated by the configuration software.
Posted: Mon Jun 5 13:35:04 PDT 2000
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