Why can I no longer accept calls with Softphone after updating to V9.8.69?

Error pattern:

In V9.8.69, the functionality of the ACLs, which you can configure in the XCC Gateway, has been improved. As a result, if the configuration is missing or incomplete, calls that are received at the client can no longer be accepted via softphone.

If this happens to you, proceed as follows:

Check the cause:

• Start the logging of the XCC (Logging > Telephony gateways > Edit XCC > Log mode on "Debug messages".
• Recreate the behavior.

• Open the log file of the XCC (Logging > Telephony gateways > Click on XCC > Show log files).
  Make sure that you are in the "XCC_FS" log.

  

• Search for an entry as follows:

... [WARNING] switch_rtp.c:616 ICE candidate [172.25.0.101:59898] rtp acl_passed: false, check_ice_acl: 1

• The IP-Address above  is only an example, if the IP-Address corresponds to the IP address of the client used for testing, this is the cause. The IP-Address or the range in which the client is located is not configured in the whitelist.

Solution:

• Open the ACL settings of the XCC (XPhone Server in the administration interface under Telephony & Meetings > Telephony > SIP > Edit XCC Gateway).
• Enter all IP address ranges that belong to the clients / VPNs in the whitelist.

 Didn't solve your Problem? See: https://support.c4b.de/hc/en-150/articles/5669171933340-Why-doesn-t-Follow-Me-work