How do I configure AT0 Trunk

Q：How do I configure AT0 trunk？

A：Use an administrator account to log in to the web management system of a U1900 series unified gateway，choose Trunk > Trunk Configuration > AT0 to configure AT0 trunk. For details, click More.

More：

What's AT0 Trunk?

An AT0 trunk is an analog circuit trunk. It uses a analog subscriber line to connect an FXO port in the local office to an FXS port in the upper-level office to implement the dedicated line function. Figure 1-2 shows the network.

Figure 1-1 Line selection rule for incoming calls

How do I configure AT0 Trunk?

Configurations vary depending on the actual data plan. The following assumes that you need to

l   Enable a PSTN user to dial the number corresponding to line FXO-1 or FXO-2 to call automatic switchboard 8888, and dial an extension number as prompted to call an intra-office user.

l   Enable a PSTN user to dial the number corresponding to line FXO-0 to directly call DID user 7000.

The following configurations are used as an example:

l   You have added an OSU board on the device.

l   You have added the user number 7000.

l   You have added the switch number 8888.

l   You have added the office route 1.

Step 1          Log in to the web management system.

The default user name and configuration password are admin and Change_Me respectively.

Step 2          Choose Trunk > Trunk Configuration > AT0 from the navigation tree.

1.         Click the solid line between the AT0 trunk and the local office.

2.         Click Create in the AT0 trunk configuration area, and set the parameters as shown in Figure 1-3.

Figure 1-2 Configuring an AT0 Trunk

You can click the text box in the Port column to select and bind multiple FXO ports to the same office route. If you bind multiple FXO ports in different rows to the same office route, the same line selection mode and the same default called number must be used for them.

3.         Click Create in the AT0 dedicated line configuration area, and set the parameters as shown in Figure 1-4.

Figure 1-3 Configuring the AT0 dedicated line

4.         Click OK.

5.         Click Back to close the current window.

Step 3          (Optional) Configure the AT0 country/region standards.

1.         Choose Trunk > Trunk Configuration > AT0 > Global.

2.         Click Configure next to Country or Region in the window that is displayed.

The page shown in Figure 1-5 is displayed.

Figure 1-4 Default settings for China

3.         Select the target country or region, and click OK.

If you change theCountry or Region value, you must restart the device for the preset AT0 parameters to take effect.

Step 4          (Optional) Add a number sign (#) to called numbers of the calls that are initiated by SIP users and routed to external users through AT0 trunks.

By default, called numbers of calls that are initiated by SIP users and routed to external users through AT0 trunks do not contain a number sign (#). If the peer office requires that the called number be ended with a number sign (#), it will not connect such calls until the timeout duration expires. To enable the peer office to connect such calls without any delay, perform the following steps.

1.         Choose Trunk > Trunk Configuration > AT0 > Global.

2.         Click Configure next to Advance in the window that is displayed. The window shown in Figure 1-6 is displayed.

Figure 1-5 Enabling the system to automatically add a number sign (#) to called numbers for calls initiated by SIP users and routed to external users through AT0 trunks

3.         Set Add # for outgoing calls in Figure 1-6 to Yes.

Step 5          Click Data Save in the upper right corner of the web management system.

Step 6          Verification.

----End

For more information, see section "Configuring an AT0 Trunk" in the eSpace U1900 Product Documentation at: http://support.huawei.com/hedex/hdx.do?docid=EDOC1000073292&lang=en&idPath=7881490|21781198|21781768|21781990|19949912