Single audio stream example
The following diagram shows an intra-realm session with one audio stream using the PCMU codec. Once the session is established, the PCMU count in the show sidp codecs output is 2.
![](img/GUID-B3F439A3-273A-4AD1-992E-A925DA8091A2-default.gif)
If the session originator and terminator in the previous diagram exist in two different realms, you must execute the show sidp codecs command twice, once for each realm. A single PCMU count will be reflected in each respective query because only one m= line emanates from each realm.