/mcpCause - This is covered in Cisco bug ID CSCdx36894 (registered customers only) on the 6608 and 6624 cards. The default playout delay was small enough to mean that jitter induced by Cisco Unity caused packets to be dropped and predictive insertion to occur. Robotic Voice Symptom Recording Robotic Voice Snippet Recording Synthetic Voice Symptom - The term synthetic means that the sound of the voice is artificial and with a quiver or fuzz. Predictive insertion causes this synthetic sound by replacing the sound lost when a packet is dropped with a best guess from a previous sample. Synthetic and choppy voice commonly occur together. Cause - A common cause is single packet loss or delay beyond the bounds of the dejitter buffer playout period. DSP predictive insertion causes the synthetic quality of the voice. For example, when a call is provided insufficient bandwidth (such as G711 codec across 64Kbps). Synthetic Voice Symptom Recording Control Recording without the Symptom Synthetic Voice Snippet Recording Underwater Voice Symptom - This voice problem is similar to the sound of your voice when heard underwater. Note: In some documents, the term underwater voice means what this document refers to as synthetic voice. Cause - This is often caused by a fast-switched cRTP bug associated with 1700 DSP firmware. Cisco bug ID CSCdy57722 (registered customers only) "no ip route-cache" provides the workaround for this problem. Intelligible Underwater Voice Symptom Recording Control Recording without the Symptom Intelligible Underwater Voice Sn Recording Symptom - Unintelligible underwater voice describes a distortion that makes it impossible to understand the voice. Descriptions of this sound include the sound of a cassette tape fast forwarded, a gulp sound, and a wishy-washy sound. Cause - A common cause of this problem is G729 IETF and pre-IETF codec mismatch. Unintelligible Underwater Voice Symptom Recording Control Recording without the Symptom Unintelligible Underwater Voice Snippet Recording