Added following snippits about Asterisk

* A Basic Asterisk server for internal calling with IVR, curl triggers and message playback
* A Asterisk server to act as a bridge between a Bluetooth phone (as in/out bound route)
* A Node-Red Subflow to create a call between extensions using ARI

Linux/Config-Examples/Asterisk-BT_bridge/ReadMe.md

@@ -0,0 +1,27 @@
+# Asterisk sever BT bridge
+Go [Here](../../Docs/Setup-Asterisk-Server.md) to read about how to set it up
+
+
+**Config files that are empty**  
+these are just here to suppress errors
+* ```acl.conf```
+* ```ccss.conf```
+* ```cdr.conf```
+* ```cel.conf```
+* ```features.conf```
+* ```pjproject.conf```
+* ```pjsip_wizard.conf```
+
+
+
+**Config files for basic usage**  
+If a config file does not have a comment is does not require any tweaking  
+`*` Must be updated before first use
+* ```asterisk.conf```
+* ```logger.conf```
+* ```modules.conf``` 
+* ```udptl.conf```
+* ```chan_mobile.conf``` Settings for bluetooth `*`
+* ```extentions.conf``` Dial plan for extension
+* ```indications.conf``` Settings for dial tones
+* ```pjsip.conf``` Sets listening for PJSIP and defines the credentials for the extensions `*`