See Table 5-1 for basic corrective action to level all WAV files on the Cisco Unity server to the same value, and then to adjust the playback level if needed. The most common symptom of audio quality problems in Cisco Unity version 3.1(x) is when the volume of greetings and voice names is higher or lower than the volume of Cisco Unity prompts. Finally, the Cisco gateway gain and attenuation settings can also affect audio quality. Cisco CallManager controls the region setting for the audio codec. Cisco Unity-controlled features include automatic gain control (AGC), the Cisco Unity-CM TSP wave gain, and the audio codec chosen for message storage. The entire device topology can affect audio quality, both within and outside of the control of Cisco Unity. Audio quality symptoms may not be present for every subscriber, or consistently appear on every message or every system prompt. For example, subscribers may report volume differences between messages and system prompts, or report that messages are distorted or garbled. Audio Quality Problems in Cisco Unity Version 3.1(x)Īudio quality problems can manifest themselves in a variety of ways, and can be difficult to diagnose and correct.
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