【Issue Description】
Ad hoc conference template A has been defined. The active MCU is a ViewPoint 8000 series MCU. Site site1 calls the unified access number through SIP in IVR mode. After choosing to join the conference, site1 enters the ad hoc conference number and password defined in conference template A. The conference template is activated successfully, and site1 is added to the conference. However, site1 fails to join the conference. On the SMC2.0 web interface, you can find the failure cause "Capability exchange failed." in conference site information.
【Possible Causes】
The conference is an encrypted conference. The encryption parameter on the SIP endpoint that attempts to join the conference is set to Enabled or Maximum interconnectivity. The capability exchange between the MCU and the endpoint fails when they negotiate capabilities because the endpoint carries the Master Key Identifier (MKI) capability.
【Procedure】
- Use an SSH tool to log in to endpoint site1 through port 22.
The default user name and password are debug and Change_Me, respectively.
- Run the following command so that the endpoint will not carry the MKI capability during capability negotiation:
- ViewPoint 9000 series endpoint: mc set mki 0
- TE series endpoint: mc cfg mki 0
