Evgney,
Caller ID works fine in most cases. I would try the following as in the troubleshooting guide here:
https://supportforums.cisco.com/docs/DOC-16469#Wrong_or_Missing_Caller_ID
Wrong or Missing Caller ID
- Caller ID signaling from the PSTN occurs between the first and second ring on incoming FXO Calls.
- If you sometimes see an incorrect or no Caller ID on an incoming call. Take the following steps:
- Make test calls to try and determine which FXO port is failing to provide Caller ID.
- Disconnect the Line from the UC320W and connect a POTS phone (or Buttset) that provides Caller ID to determine if it is being sent from the Service Provider.
- If Caller ID is not provided to the POTS phone (or Buttset), take the following additional steps:
- Check for cabling issues or look for sources of signaling impairments (cross connected cables, shorted wires, etc).
- If you can't identify a physical issue with a certain line, make a note of the line number and open a trouble ticket with the Service Provider to make sure the feature is enabled for that line.
- If Caller ID is provided to the POTS phone but not the UC320W on a certain line.
- Check to see if the Rx Gain has been increased on this FXO port and try lower the value to see if it resolves the issue.
- If not, get a full trace of an incoming call with the specific FXO line enabled (Make sure Show SIP Only is not checked) using the UC320W Configuration Utility's Status/Troubleshooting page.
- Open a trouble ticket with the Cisco Small Business Support Center.
