3Com Nbx 100 And Ss3 Nbx Administration Guide

							Configuring and Managing T1 Digital Line Cards311
Modifying Audio Controls
In a normal environment, you should not need to change the Audio 
Controls from their default settings. If you have an issue with sound 
quality and you cannot resolve it using the volume controls on the NBX 
Telephones, contact your technical support representative.
CAUTION:Do not change your Audio Controls settings unless you are 
instructed to do so by a qualified 3Com Technical Support representative.
Modifying a T1 GroupA Digital Line Card group is one or more T1 channels that are assigned 
the same characteristics, such as Channel Protocol and DS1 direction. This 
section describes how to perform these actions:
■Modifying a T1 Group
■Changing T1 Group Membership
■Removing a T1 Group
CAUTION:Modifying a T1 group disconnects any calls in process on any 
channels associated with the group.
Modifying a T1 Group
You may want to modify a Digital Line Card group to change its name, 
Auto Extension assignments, or other parameters. When you modify a 
group, the changes affect all the Digital Line Cards assigned to that 
group. To modify a Digital Line Card group:
1return to the Digital Line Cards tab.
2From the Select Device Type pull-down list, select one:
■T1 Group List (for T1 DS1)
■ISDN PRI Group List (for T1 ISDN PRI)
3Click Apply.
4Select the group that you want to modify.
5Click Modify. The dialog box that appears depends on the Group List that 
you selected. 
Figure 129
 shows the T1 DS1 Modify Group dialog box. Figure 130 
shows the T1 ISDN PRI Modify Group dialog box. 
						

							312CHAPTER 3: DEVICE CONFIGURATION
Figure 129   Modify Group Dialog Box — T1 DS1
Figure 130     Modify Group Dialog Box — T1 ISDN PRI
6Make the desired changes to the group parameters. See the Help for 
details on each parameter.
7Enable the On Line check box to bring the group on line. 
						

							Configuring and Managing T1 Digital Line Cards313
8Click Apply to effect the changes.
9Click OK.
Changing T1 Group Membership
You can change the channel membership in a group to accommodate 
changing needs.
To change group membership:
1Return to the Digital Line Cards tab.
2From the Select Device Type pull-down list, select either T1 Group List (for 
DS1), or ISDN PRI Group List (for ISDN PRI)
3Click Apply.
4Select the group for which you want to change membership.
5Click Membership. The dialog box that appears depends on the group list 
you select. Figure 87
 shows the T1 Group Membership dialog box.
Figure 131     Manage Group Membership Dialog Box
6To add a channel to the Member List, select the channel in the Non 
Member List and click 
						

							314CHAPTER 3: DEVICE CONFIGURATION
remove. If you do not select this option, the channel settings do not 
change.
7Optionally enable the Refresh Channels on Add/Remove check box. This 
refreshes each channel as you add or remove it.
8To remove a channel from the Member List, select the channel in the 
Member List and click >>.
Each channel must belong to a group. A channel can belong to only one 
group at a time. You cannot move a channel from the members list to the 
non-members list unless the system can assign the channel to another 
group. If a channel has never been a member of another group, the 
system cannot determine a group to which it can move the channel. 
Therefore, it cannot remove the channel from the member list. If a 
channel has been a member of another group the system moves the 
channel to the group of which the channel was most recently a member.
Example: By default, the system creates two groups, Group 1 and 
Group 2, and places all channels in Group 1. If you try to move a channel 
to the non-member list of Group 1, the operation fails. If you select 
Group 2, click Membership, move a channel from the non-member list to 
the member list, then move the same channel back to the non-member 
list, the operation succeeds because the channel was previously a 
member of Group 1. If you then view the Group 1 membership list, it 
contains the channel you just removed from Group 2.
9Click Close.
Removing a T1 Group
To remove a group:
1Return to the Digital Line Cards tab.
2From the Select Device Type pull-down list, select either T1 Group List (for 
T1 DS1), or ISDN PRI Group List (for T1 ISDN PRI).
3Click Apply.
4Select the group you want to remove.
5Click Remove. A prompt appears asking if you want to remove the group.
6Click Ye s to remove the group. 
						

							Configuring and Managing T1 Digital Line Cards315
Modifying T1 Card
ChannelsA channel is either a T1 DS1 or T1 ISDN PRI time slot. Each channel can 
accommodate a single telephone call. This section describes how to 
modify channels for an installed T1 Digital Line Card and how to view the 
status of an existing channel.
CAUTION:Do not modify channels unless a 3Com Technical Support 
representative advises you to do so. Modifying an ISDN channel 
disconnects any existing calls on that channel.
To modify a channel on an installed T1 card:
1Return to the Digital Line Cards tab (Figure 98
).
2From the Select Device Type pull-down list, select either T1 Channel List 
(for T1 channels), or ISDN PRI Channel List (for T1 PRI channels).
3Click Apply.
The window that appears depends on the channel list you select. 
Figure 132
 shows the T1 Channel List.
Figure 132   T1 Channel List
4Select the channel that you want to modify.
5Click Modify. The dialog box that appears depends on the channel list 
that you selected. 
						

							316CHAPTER 3: DEVICE CONFIGURATION
Figure 133 shows the T1 DS1 Modify Channel dialog box. Figure 134 
shows the T1 ISDN PRI Modify Channel dialog box.
Figure 133     Modify Channel Dialog Box — T1 DS1
Figure 134     Modify Channel Dialog Box — T1 ISDN PRI 
						

							Configuring and Managing T1 Digital Line Cards317
6Fill in or change the fields in the appropriate Modify Channel dialog box. 
See the Help for a description of each parameter. Enable the On Line 
check box to bring the channel on line. Click Apply and then OK.
The channel does not come online unless the card and the span are 
online.
Viewing the Status of a T1 Card Channel
To view the status of a channel on an installed T1 Digital Line Card:
1On the Digital Line Cards tab, select, from the Select Device Type 
pull-down list, either T1 Channel List (for T1 DS1 channels) or 
ISDN PRI Channel List (for T1 ISDN PRI channels).
2Click Apply.
3Select the channel for which you want status information.
4Click Status. A Channel Status dialog box appears.
5The dialog box that appears depends on the channel list that you select.
Figure 135
 shows the Channel Status dialog box for a T1 DS1 Channel 
List. Figure 136
 shows the Channel Status dialog box for the T1 ISDN PRI 
Channel List.
Figure 135     Channel Status Dialog Box — T1 DS1 
						

							318CHAPTER 3: DEVICE CONFIGURATION
Figure 136     Channel Status Dialog Box — T1 ISDN PRI
6View the status of the channel.
7Refresh the Channel Status dialog box.
aFrom the Dialog Refresh pull-down list, select:
■Manual — To manually refresh the Channel Status dialog box each 
time you click the Apply button.
■A time interval (5, 10, 15, 30, or 60 seconds) to automatically 
refresh the Channel Status dialog box at the specified intervals.
bEnable the Device Refresh check box.
8Click Apply, and then click OK.
Viewing DSP (Digital Signal Processor) Details
To view DSP (Digital Signal Processor) details:
1Return to the Digital Line Cards tab.
2From the Select Device Type list, select T1/ISDN Board List and click Apply.
3Select the board you want and click Status.
4In the Board Status dialog box, select a DSP from the DSP List and click 
Details (Figure 91
). 
						

							Configuring and Managing T1 Digital Line Cards319
Figure 137   DSP Status Window
5Click Close to close the DSP Status window.
6Click Apply to make the changes. 
7Click OK.
Modifying IP Settings
for a T1 CardYou can modify the IP settings for a T1 Digital Line Card to meet 
changing requirements.
The board must be on the same subnetwork as the Call Processor to 
modify IP settings.
To modify the IP settings of a T1 Digital Line Card:
1In the NBX NetSet - Main Menu window (Figure 97
), click 
Device Configuration and then the Digital Line Cards tab. See Figure 98
.
2From the Select Device Type pull-down list, select T1/ISDN Board List and 
click Apply.
3Select the board for which you want to change the IP settings and click IP 
Settings (Figure 92
).
If the dialog box has no IP Settings button, you have not yet installed the 
IP licenses. You must install them before you can proceed. 
						

							320CHAPTER 3: DEVICE CONFIGURATION
Figure 138   Digital Line Card IP Settings Dialog Box — T1 DS1
4To assign IP addresses automatically, enter the first address in the First 
IP Address field. The system sequentially adds the remaining addresses.
Assigning IP Addresses One at a Time
To assign IP addresses one at a time:
1In the Digital Line Card IP Settings dialog box, click Assign Addresses 
Individually (Figure 93
).
2Enter the IP addresses that you want for the channels.
You must have IP licenses installed before you can enter addresses.
3Enter the mask number appropriate for your site in the Common Subnet 
Mask field.
4Enter IP address for the Common Default Gateway, and then click Apply 
and OK.
5In the Digital Line Card IP Settings dialog box dialog box, click Apply to 
effect the changes, and then click OK.