Telepresence Host Disconnected from One or More Codecs

Publication Date:  2015-08-10 Views:  214 Downloads:  0
Issue Description
     As indicated on the telepresence host web interface, one or more codecs are disconnected from the telepresence host. In Figure 4-8, all the three codecs are disconnected from the telepresence host.

 On the telepresence host web interface, after you right-click a codec and choose Settings from the shortcut menu, details about the codec fail to be displayed. In addition, a message similar to "The telepresence host is disconnected from the center codec" is displayed in the lower right corner, as shown in Figure 4-9.

NOTE:
The codecs are connected to the telepresence host through two lines: Telnet and HTTP.

    If the Telnet connection is down, a diagram shown in Figure 4-8 is displayed.

 If the HTTP connection is down while the Telnet connection is functioning, an error message is displayed, as shown in Figure 4-9.

Figure 4-8 Telnet connection down




Figure 4-9 HTTP connection down while Telnet connection is functioning

Handling Process
Step 1 Obtain the version compatibility table from Huawei Online Support Center for Enterprise (Support-E) at http://support.huawei.com/enterprise . Check the version compatibility against the version compatibility table.
  • If the versions of the telepresence host and codecs match, go to step 2.
  • If the versions of the telepresence host and codecs do not match, update the incompatible versions to the same version. If the issue persists, go to step 2.
Step 2 Check that the internal network IP addresses of the telepresence host and codecs are on the same network segment and that the external network IP addresses of the telepresence host and codecs are also on the same network segment.

1. Log in to the telepresence host web interface. On the displayed page, right-click Telepresence Host and choose Diagnose from the shortcut menu. Enter the codec IP addresses in turn and click Start to check the network between the telepresence host and codecs, as shown in Figure 4-10.
  • If the network is functioning, go to step 3.
  • If the network is not functioning, go to substep 2.
Figure 4-10 Network Diagnostics dialog box



2. Set the IP addresses based on the IP address plan provided by the customer. Ensure that network cables are correctly connected and that the network between the telepresence host and codecs is functioning.

3. Log in to telepresence host web interface and check whether the issue is resolved.
  • If yes, the troubleshooting is complete.
  • If no and a diagram shown in Figure 4-8 is displayed on the telepresence host web interface, go to step 3.
Step 3 Set the IP addresses for the communication between the telepresence host and codecs as follows:

1. Log in to the telepresence host web interface as the superadmin user. On the displayed page, right-click Telepresence Host and choose Settings from the shortcut menu. In the displayed Telepresence Host Settings dialog box, set the IP addresses (codecs' internal network IP addresses are used by default), and click Save, as shown in Figure 4-11.

Figure 4-11 Setting the IP addresses for communication between the telepresence host and codecs




2. Log in to the web interfaces of the left, center, and right codecs in turn and perform the following operations: Choose System Settings > Network > Security and Service > Others. In Telepresence IP address, enter the internal network IP address of the telepresence host (172.16.21.10 by default), as shown in Figure 4-12. Then click Save.

Figure 4-12 Setting the internal network IP address of the telepresence host




3. Log in to the telepresence host web interface. On the displayed page, right-click the left, center, and right codecs in turn and choose Settings from the shortcut menu.
  • If the details about the three codecs are properly displayed, the telepresence host is connected to the codecs.
  • If no details about the codecs are displayed and an error message is displayed in the lower right corner, as shown in Figure 4-9, the HTTP connection fails while the Telnet connection is successful. If this is the case, go to step 4.
Step 4 Set the HTTP communication password.

1. Log in to the telepresence host web interface as the superadmin user. Choose System Settings > Users. Under HTTP Client User, change the value of Password to the specified password such as api 123 (api by default), as shown in Figure 4-13. Then, enter the same password in Confirm password and click Save.

Figure 4-13 Setting the HTTP communication password




2.  Log in to the web interfaces of the left, center, and right codecs in turn and perform the following operations: Choose System Settings > Personal. Under Settings of API User, set User password to be the same as Password under HTTP Client User, such as api123 (api by default), as shown in Figure 4-14. Then, enter the same password in Confirm password and click Save.

Figure 4-14 Setting the HTTP password for the codecs to communicate with the telepresence host




Step 5 If the issue still persists after the preceding operations, contact the R&D department in Huawei HQ.
Root Cause
Possible Cause:
  • The versions of the telepresence host and codecs do not match.
  • The IP addresses for the communication between the telepresence host and codecs are not set or incorrect.
  • The HTTP communication password is not set or incorrect.

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