| Problem Summary ||Calls are dropped when a caller tries to invoke supplementary services like Call Hold, consult or conference.
| Error Message ||ERROR: Supplementary service invoked by Caller. This feature is not supported.
| Possible Cause ||Caller is trying to invoke supplementary services like Call Hold, consult or conference. This is an unsupported feature.
| Recommended Action ||On Unified CM (with supported Unified CVP version), turn on MTP (Media Termination Point).
| Release ||Release 7.0(2)|
| Associated CDETS # || None. |