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.

Published by:

Redouane MEDDANE

Redouane MEDDANE is Cisco Instructor CCSI #35458, 3xCCNP Collaboration, Security and Enterprise and he a published author of some of the most important OSPF Protocol, Security and Collaboration books in the world titled OSPF Demystified With RFC, Network Security All-in-one, and Dial Plan and Call Routing Demystified on CUCM. He is also a blogger at ipdemystify.com and writes articles about collaboration and security to demystify the most complex topics. His books are known for their technical depth and accuracy especially the OSPF Demystified With RFC book, which is considered as the best OSPF book in the world and named "One of the best OSPF ebooks of all time" by BookAuthority It gives you a hint at the ability to explain complex topics with remarkable ease. He worked as a Cisco Instructor and consultant indifferent Cisco Learning Partner and awarded twice as Cisco Distinguished Instructor Award and Cisco Security Instructor Excellence Award on 2018 and 2019, and Cisco Collaboration Instructor Excellence Award on 2020. The Distinguished Instructor Award recognizes the top 5% of Cisco's most influential CCSI's who provide the highest quality training experience and demonstrate the best overall instructor performance across multiple Cisco technologie and Instructor Excellence Award recognizes the top 25% of elite CCSIs being recognized for delivering top quality training and maintaining high customer satisfaction in their field of expertise.

Categories CollaborationLeave a comment

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s