Are you using the Cisco supplied camera control cable or a premade one, are you using any of the Cisco Y-cables?
If you have another SX20, swap the camera control cable to see if there is an issue with the cable. If the SX20 doesn't see the camera using a different cable, try swapping the cameras. If the camera again fails to be seen, than it could be faulty. However, if the camera starts working with the second SX20, but the camera you swapped to the original SX20 stops, then there might be an issue with the codec. In either case, contact TAC as there is mostly likely a hardware issue and depending on the results above, one of them might need to be replaced.
Since you already did a software upgrade, you could try a factory reset as a last resort before contacting TAC.
You need to connect both the HDMI and camera control cable. Without the camera control cable, the codec will not be able to detect the camera and you won't be able to control the codec through the camera's IR Sensor. It depends on which combination of y-cables you're using, but the pin-outs for both types are in the PrecisionHD Camera User Guide on pg 19-20.
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
clear text, these texts can be gibberish unless you understand fully
what they mean. This document attempts to br...
Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
questions and it will render the proper jabber-config.xml file for you
to copy/paste. There is built in logic to verif...
[toc:faq]CUCM Database Replication is an area in which Cisco customers
and partners have asked for more in-depth training in being able to
properly assess a replication problem and potentially resolve an issue
without involving TAC. This document discusse...