Configuring IP Telephony 161To manually configure channel IP addresses:1 Log in to the NBX NetSet utility using the administrator username andpassword.2 If you have not already done so, use the Auto Discover feature or manualconfiguration to add the T1, E1, or ISDN BRI channels to theconfiguration database.3 In the NBX NetSet - Main Menu window, click Device Configuration.4 Click the Digital Line Cards tab.5 From the Select Device Type list, select T1/ISDN Board List.6 In the board list select a board, and then click IP Settings.7 To assign one IP address manually and have the NBX system assign theremaining addresses automatically, enter the first address in the First IPAddress box. The system adds the remaining addresses sequentially whenyou apply the changes.3C10165D E1 cards and 3C10116D T1 cards need only one IP address.Enter the IP address in the First IP Address box. The Assign AddressesIndividually button does not appear when you are configuring 3C10165DE1 cards and 3C10116D T1 cards.8 To assign IP addresses individually on digital line cards other than3C10165D E1 cards and 3C10116D T1 cards, click Assign AddressesIndividually.a Specify an IP address for each channel.b In the Common Subnet Mask and Common Default Gateway fields,enter IP values that are appropriate for your network.c Click Ok.9 In the IP Settings screen, click Apply.10 Wait 3 minutes for the changes to take effect.11 Verify your changes.12 Click OK to close the dialog box.You cannot configure ConneXtions ports in the IP Settings dialog box.See “ConneXtions H.323 Gateway” in the NBX Administrator’s Guide formore information.Low-bandwidthTelephonyTo support remote users, you can configure a 3Com Business Telephoneor 3Com Basic Telephone to operate over a low-bandwidth link. For