work on docs

docs/b-netz.html

@@ -58,7 +58,8 @@ This helped to lower the channel allocation time.
 
 <center><img src="bird.png"/></center>
 
-<center><a href="bnetz.wav">Listen to base station's idle sequence</a></center>
+<center>Listen to base station's idle sequence:<br>
+<audio src="bnetz.wav" controls></audio></center>
 
 <p class="toppic">
 <a name="howitworks"></a>
@@ -137,7 +138,6 @@ All digit starts with sync pattern ("0 1 1 1 0").
 |0 1 1 1 0|0 0 1 1 0|0|0 1 1 0 0| Wahlziffer 7
 |0 1 1 1 0|0 0 1 0 1|0|1 0 1 0 0| Wahlziffer 8
 |0 1 1 1 0|0 0 0 1 1|0|1 1 0 0 0| Wahlziffer 9
-|0 1 1 1 0|0 0 0 1 1|0|0 1 0 0 1| Wahlziffer 2
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 
    Sync