H.323 Direct Calls With IP Address Between Two TelePresence Endpoints Without Call Control

To Troubleshoot Call Quality Issues the WAN can be one of the causes for the bad call quality if there is for example a misconfiguration of QoS. There can be also a misconfiguration of the call control either the Cisco TelePresence Video Communication Server (VCS) or the Cisco Unified Communications Manager (CUCM).

By using a direct call using IP Address between two endpoints without call control, you can test if the problem is under the endpoint itself or other reasons behind the endpoint for example the WAN infrastructure, this method is helpful to isolate the issues.

Log into the endpoint DX Telepresence 80 GUI https://172.28.56.3.

Navigate to Setup> System Configuration and click the H323 tab on the left side. Choose Direct from the CallSetup Mode drop down menu, in the H.323 Alias, use 1001 as E.164 number and dx-80 as H.323 ID then click Save.

Navigate to Setup > System Configuration and click the Conference tab on the left side. In the DefaultCall section, choose H323 from the Protocol drop down menu and click Save.

Navigate to Setup > System Configuration and click the Network Services tab on the left side. Choose On from the H323 Mode drop down menu and click Save.

Log into the endpoint SX 20 GUI https://172.28.56.10.

Navigate to Setup> System Configuration and click the H323 tab on the left side. Choose Direct from the CallSetup Mode drop down menu, in the H.323 Alias, use 1002 as E.164 number and sx-20 as H.323 ID then click Save, then click Save.

Navigate to Setup > System Configuration and click the Conference tab on the left side. In the DefaultCall section, choose H323 from the Protocol drop down menu and click Save.

Navigate to Setup > System Configuration and click the Network Services tab on the left side of the screen. Choose On from the H323 Mode drop down menu and click Save.

From the SX 20 GUI, navigate to Call Control, in the Contacts section type the ip address of the DX Telepresence 80 172.28.56.3 and click Call.

The SX Telepresence 20 is calling the DX Telepresence 80.

From the DX Telepresence 80 GUI, ensure that the call is received.

Answer the call.

You can see that the call is connected properly from the DX Telepresence 80 172.28.56.3.

Below you can see that the call is connected properly from the SX Telepresence 20 172.28.56.10.