Configure H.323 without Gatekeeper

The H.323 Configuration procedure configures a H.323 signaling stack, an H.323 channel group, and connects to an external H.323 gateway. The procedure describes the basic configuration needed to accept a call coming from a network utilizing H.323 as its signaling protocol. Below is a Quick Start diagram displaying the objects. In addition, the objects that are displayed as blue font, are links to the topics.

 

DG_Tree_ClientView_h323config.png

 

Note: Before proceeding, verify that the Basic Configurations topic has been completed. The Basic Configurations topic sets up objects such as VoIP Interfaces and IP Bearer ports needed prior to starting the Configure H323 without Gatekeeper procedure.

 

Configure H.323 Signaling Stack

Configure the H.323 Signaling stack that will be used by 2020 IMG. The H.323 stack must be created for each 2020 IMG.

  1. Right click on the 2020 IMG Name object and select New Signaling. In the Signaling object that appears, there is no configuration needed. Refer to the Signaling topic for more information on this topic.

  2. Right click on the Signaling object and select New H323. An H.323 signaling object gets created. The H.323 Signaling IP address field automatically takes the IP address of the CTRL port on rear of 2020 IMG. This can be modified as needed.

  3. Since there will be no Gatekeeper in this example, disable the Gatekeeper Support field by selecting Disable from the drop down menu.

  4. H.245 Tunneling is by default set to Enable. If H.245 Tunneling will not be utilized, select Disable from the drop down menu in the H.245 Tunneling field. Refer to H.245 Tunneling topic for more information.

  5. Refer to the H.323 Signaling topic for more information on configuring the H.323 Signaling object.

 

Configure H.323 Timers (Optional)

If any of the H.225 or H.245 Timers need to be modified, they can be done in the H.323 Timers object. See below.

  1. Right click on the H.323 Signaling object and select New H.323 Timers. Within the H.323 Timers object, modify any of the timers as needed. Refer to the H.323 Timers topic for more information on each timer.

Configure H.323 External Gateway

Configure the H.323 Gateway object. The H.323 Gateway object configures the specifications needed to be able to communicate with an External H.323 gateway.

  1. Right Click on IMG EMS and select New External Network Elements. The External Network Elements object is a container object and no configuration is needed here. For more information on this object refer to the External Network Elements topic.

  2. Right Click on External Network Elements and select New External Gateways. The External Gateways object is a container object and no configuration is needed here. For more information on this object refer to the External Gateways topic.

  3. Right Click on External Gateways and select New External Gateway. Enter a name that identifies this gateway.

  4. Select H323 from drop down menu in Gateway Signaling Protocol field.

  5. In the IP Address field, enter the IP address needed to be able to communicate with the remote H.323 gateway.

  6. Refer to the External Gateway topic for more information on configuring the External H.323 Gateway.

Configure Channel Group and External Network Element

Configure an H.323 Channel Group that will communicate with the H.323 External Gateway. After configuring the H.323 channel group, create an external network element. This will be the gateway that was configured earlier. Refer to procedure below.

  1. Right Click on the IMG EMS object and select New Routing Configuration. The Routing Configuration object is a container object and no configuration is needed here. For more information on this object refer to the Routing Configuration topic.

  2. Right Click on the Routing Configuration object and select New Channel Groups. The Channel Groups object is a container object for multiple channel groups. No configuration is needed here. For more information refer to Channel Groups topic.

  3. Right click on the Channel Groups object and select New Channel Group. In the Name field, enter a name for the Channel Group being configured.

  4. Select H323 from the drop down menu in the Signaling Type field.

  5. Select the Incoming and Outgoing IP Profile from drop down menu. For more information on configuring the Channel group object, refer to the Channel Group topic.

  6. Right Click on the H.323 Channel Group and select New IP Network Element. Select from drop down menu the gateway configured in Configure External Gateway section above.

 Below is screen capture displaying the ClientView Object Tree pane after the above configuration.

SC_Tree_H323_GatewayOnly_Config.png