SIP to SIP - Configure Channel Groups
- Kelli Higdon
To connect the IP Phone and SIP Client to the IMG 2020, a channel group for each IP device/phone will need to be created. The procedure below will create two channel groups. One channel group for each IP device/phone.
Create Channel Group to communicate with the SIP Client
To create a channel group, the Routing Configuration object pane must first be configured. Right click on Dialogic object and select New Routing Configuration. The Routing Configuration pane will get created. No configuration is needed in this object. Refer to Routing Configuration topic for more information.
Right click on the Routing Configuration object and select New Channel Groups. The Channel Groups object is a parent or container object and no configuration is needed here. Refer to the Channel Groups topic for more information on this object.
To create a Channel group that will communicate with the SIP Client and uses the codec G.711, right click on Channel Groups Object and select New Channel Group. The channel group object pane will get created. Below is screen capture of channel group used in this example for the SIP Client.
Notes on specific fields in Channel Groups
Field | Description |
Name | Enter a name for the channel group. In this example ChGrp_G711_SIPClient was used. |
Signaling Type | Select SIP signaling since the protocol being used is SIP. |
Incoming IP Profile | Select IP_Profile_G711. This is the incoming IP Profile configured earlier and the IP profile that will be used to communicate with the SIP Client. |
Outgoing IP Profile | Select IP_Profile_G711. This is the outgoing IP Profile configured earlier. The outgoing side of this channel group will eventually be routed to a channel group that will have G.729 as its incoming and outgoing IP Profile. |
Refer to the topic for more information on configuring the Channel Group object.
Configure communications between SIP Client and Channel Group created
The SIP Client needs to be configured as an external network element to the Channel Group created. To achieve this, the IP Phone needs to first be configured as an external gateway and then linked to the channel group. Follow the procedure below to accomplish this.
Right click on the Dialogic object and select New External Network Elements. The External Network Elements is a container object and no configuration is needed here. Refer to External Network Elements topic for more information on this object.
Right click on the External Network Elements and select New External Gateways. The External Gateways object is a container object as well, and no configuration is needed here. Refer to the External Gateways topic for more information on this object.
Right click on the External Gateways object and select New External Gateway. The gateway in this example is the SIP Client application. It will be labeled GW1_SIPClient.
Enter the IP address of the SIP Phone in the IP Address field.
Select the SIP Profile created in the SIP to SIP - Initial Configuration topic. The SIP Profile can be selected from the Drop Down Menu in the SIP Profile field. Refer to the External Gateway topic for more information on this object. See screen capture below.
To connect the SIP Client to the channel group created earlier, the SIP Client must be configured as an External Network Element of this channel group. Right click on Channel Group ChGrp_G711_SIPClient and select New IP Network Element. Select from the drop down menu, the gateway just created. See screen capture below.
Refer to the IP Network Element topic for more information on this object.
Click back on the Channel Groups object. The Channel Groups object should have a yellow exclamation point displayed as the icon. This indicates the configuration needs to be sent to the IMG 2020. Click on the Download Resource Tables button and the configuration under the Channel Groups object will get sent to the IMG 2020.
The procedure above needs to be duplicated for the IP Phone. See procedure below to achieve this.
Create Channel Group to communicate with SJ Phone.
Create a Channel group that will communicate with the IP Phone. Right click on Channel Groups Object again and select New Channel Group. The channel group object pane will get created. Below is screen capture of the channel group object configured for this example. This Channel Group will communicate with the IP Phone.
Notes on specific fields in Channel Groups
Field | Description |
Name | Enter a name for the channel group. In this example ChGrp_G729_IPPhone was used. |
Signaling Type | Select SIP signaling since the protocol being used is SIP. |
Incoming IP Profile | Select IP_Profile_G729. This is the incoming IP Profile configured earlier and the IP profile that will be used to communicate with the IP Phone. |
Outgoing IP Profile | Select IP_Profile_G729. This is the outgoing IP Profile configured earlier. The outgoing side of this channel group will eventually be routed to a channel group created earlier that has G.711 as its incoming and outgoing IP Profile. |
Refer to the Channel Group topic for more information on configuring the Channel Group object.
 Configure communications between SJ Phone and Channel Group created
The IP Phone needs to be configured as an external network element to the channel group created. To achieve this, the IP Phone needs to first be configured as an external gateway and then associated with the channel group. Follow the procedure below to accomplish this.
Right click on the External Gateways object and select New External Gateway. The gateway in this example is the IP Phone, so it will be labeled GW2_IPPhone. Enter an IP address and modify the field as needed. Refer to the External Gateway topic for more information on this object. See screen capture below.
To connect the SJPhone which is configured as a gateway to the SJPhone channel group created earlier, the SJPhone must be configured as an External Network Element of this channel group. Right click on SJPhone channel group and select New IP Network Element. Select from the drop down menu, the gateway just created. See screen capture below.
Refer to the IP Network Element topic for more information on this object.
Click back on the Channel Groups object. The Channel Groups object should have a yellow exclamation point displayed as the icon. This indicates the configuration needs to be sent to the IMG 2020. Click on the Download Resource Tables button and the configuration under the Channel Groups object will get sent to the IMG 2020.
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The channel groups are created and configured to communicate with the external gateways (IP Phone and SIP Client). The next procedure is to Route the calls through the IMG 2020. Continue on to the SIP to SIP - Configure Routing topic for information on how to configure the routing for this example.