Updated Networking audio (markdown)

Networking-audio.md

@@ -129,6 +129,23 @@ Here we will use PCMA note that PCMU is also possible.
   - audiopt `8` corresponds to the RTP payload (PCMA is 8 and PCMU is 0)
   - audiortpmap `PCMA/8000/1` is the RTP stream mapping in SDP format. The same is found on the `a=rtpmap` line of the `.sdp` file
 
+#### G722
+
+For G722 the endpoint is coded like this:
+
+```
+sdrangel-audio: {
+    type = "rtp"
+    id = 16
+    description = "SDRangel live audio"
+    audio = true
+    video = false
+    audioport = 9998
+    audiopt = 9
+    audiortpmap = "G722/8000/1"
+}
+```
+
 #### Opus
 
 For Opus the endpoint is coded like this: