3Com Nbx 100 And Ss3 Nbx Administration Guide

Configuring and Managing E1 Digital Line Cards261
If the DDI/DID numbers match your internal extension numbers, the 
translator entries in your Dial Plan configuration file can be much simpler.
Example: You plan to use internal extensions from 100 through 299, 
and the local telephone company assigns you numbers from 
617-555-4100 through 617-555-4299. If the local telephone carrier 
passes you three digits, you need no translator entries in the Dial Plan 
configuration file. If the carrier passes you...

262CHAPTER 3: DEVICE CONFIGURATION
6Tighten the left and right screws on the front of the E1 card.
7Wait 3 minutes.
CAUTION: When you insert the E1 Digital Line Card, it begins an 
initialization sequence. Also, because you enabled the Auto Discover 
Digital Line Cards check box, the system recognizes the addition of the 
E1 card and begins to update its database. Allow 3 minutes for both of 
these processes to be completed.
You are now ready to configure the E1 Digital Line Card.
Configuring the
E1...

Configuring and Managing E1 Digital Line Cards263
Figure 94   Modify Board Dialog Box — ISDN PRI
5Scroll through the Channel List to verify that the system lists all 
30 channels. Figure 94
 shows the first few channels. The channel 
numbers appear after the MAC address, separated by a dash.
Example: In the figure, the fourth line appears as:
1...00:e0:bb:04:4e:a5-4 Trunk
The 4 after the dash indicates channel number 4.
6To change the name of the E1 board, edit the contents of the Board 
Name field. This...

264CHAPTER 3: DEVICE CONFIGURATION
To verify that the span status changes from Offline to Ready:
1Return to the Digital Line Cards tab.
2Select ISDN PRI Span List from the Select Device Type list.
3Click Apply.
Configuring E1 Groups
To configure the E1 Groups:
1Return to the Digital Line Cards tab.
2From the Select Device Type list, select ISDN PRI Group List.
3Click Apply.
4From the ISDN PRI Group List, select PRI Group 1.
5Click Modify. The Modify Group dialog box (Figure 95
) appears.
Figure 95...

Configuring and Managing E1 Digital Line Cards265
Verifying E1 Group Membership
To verify that all channels are in the member list:
1Return to the Digital Line Cards tab (Figure 113
).
2In the Select Device Type list, select ISDN PRI Group List and click Apply.
3Select the group that you want, and click Membership (Figure 96
).
Figure 96   Manage Group Membership Dialog Box
4Scroll through the Member List to verify that all 30 channels are present.
Completing the E1 Configuration
To complete the E1...

266CHAPTER 3: DEVICE CONFIGURATION
E1 Card Status LightsThe E1 card contains these status lights:
■CF — Carrier Fail (when lit, indicates either a red alarm or blue alarm)
■RA — Remote Alarm (yellow alarm)
■LB — Loopback
■Nominal — E1 card is framed
Modifying an E1 CardThese sections tell you how to modify a E1 card that is already installed in 
the system:
■Modifying the E1 Card Name
■Modifying an E1 Span
■Configuring Partial E1 Lines
■Modifying Audio Controls
Modifying the E1 Card Name
You can change...

Configuring and Managing E1 Digital Line Cards267
2Select Device Configuration > Digital Line Cards (Figure 98).
Figure 98   Digital Line Cards Tab
3Select the board in the T1/ISDN Board List, and click Modify (Figure 99).
Figure 99     Modify Board Dialog Box 

268CHAPTER 3: DEVICE CONFIGURATION
4In the Board Name field, you can enter a name for the board, if you want, 
or you can accept Tr u n k, the default name that the NBX system assigns. 
The name that you enter helps you to identify the board in device lists.
Modifying an E1 Span
To modify an E1 span:
1Return to the Digital Line Cards tab.
2From the Select Device Type pull-down list, select ISDN PRI Span List 
3Click Apply.
4Select the span you want to modify from the Span List.
5Click Modify. Figure 100...

Configuring and Managing E1 Digital Line Cards269
6Make the desired changes. Table 46 lists all span parameters for 
reference. The number of channels supported per span depends on the 
configuration of the Digital Line Card. E1 cards support 30 channels per 
span.
7Click Apply.
8Enable the On Line check box to bring the span online.
Before the span can come online, the board must be online.
9Click Apply for the changes to take effect.
10Click OK.
Configuring Partial E1 Lines
Some telephone companies...

270CHAPTER 3: DEVICE CONFIGURATION
Some telephone companies offer Partial E1 lines as their standard 
offering and provide fully implemented E1 lines only if you make a 
specific request. If you are unaware of this, outbound calls using the E1 
line may fail because the system places outbound calls using high 
numbered channels first, and a Fractional E1 typically has the lower 
numbered channels implemented.
In the Span Status dialog box, under Details of last five calls, if you see the 
error message...