From 3568b66aba098a07dd9ea9106f6b9fe182a3dc0e Mon Sep 17 00:00:00 2001
From: Jack Hadrill <jack@hadrill.co.uk>
Date: Sat, 15 Feb 2020 03:33:41 +0000
Subject: [PATCH] Refactored to include Twilio-based SIP trunk.

---
 asterisk/extensions.conf | 38 ++++++++++++++++++++++++++++++++++++++
 asterisk/modules.conf    |  2 ++
 asterisk/sip.conf        | 35 +++++++++++++++++++++++++++++++++++
 asterisk/voicemail.conf  | 12 ++++++++++++
 4 files changed, 87 insertions(+)
 create mode 100644 asterisk/extensions.conf
 create mode 100644 asterisk/modules.conf
 create mode 100644 asterisk/sip.conf
 create mode 100644 asterisk/voicemail.conf

diff --git a/asterisk/extensions.conf b/asterisk/extensions.conf
new file mode 100644
index 0000000..018a4cd
--- /dev/null
+++ b/asterisk/extensions.conf
@@ -0,0 +1,38 @@
+[+441234567890]
+    ; Redirect incoming calls from trunk with context +441234567890 to internal extension 0.
+    exten => _+X.,1,Goto(internal,0,1)
+    
+[outgoing]
+    ; Redirect all calls entering this context via SIP trunk "twilio".
+    exten => _X.,1,Dial(SIP/twilio/+${EXTEN})
+    same => n,Hangup
+
+
+[internal]
+    ; Dialplan for extension 1000.
+    ; Dial SIP user 1000. Timeout after 10 seconds.
+    exten => 1000,1,Dial(SIP/1000,10)
+    same => n,VoiceMail(${EXTEN})
+    same => n,Hangup
+    
+    ; Dialplan for extension 1001.
+    exten => 1001,1,Dial(SIP/1001,10)
+    same => n,VoiceMail(${EXTEN})
+    same => n,Hangup
+
+
+    ; Dialgroup "everyone" at extension 0 to ring mulitple extensions. 
+    exten => 0,1,Set(DIALGROUP(everyone,add)=SIP/1000)
+    same => n,Set(DIALGROUP(everyone,add)=SIP/1001)
+    same => n,Dial(${DIALGROUP(everyone)},10)
+    same => n,VoiceMail(${EXTEN})
+    same => n,Hangup
+
+
+    ; Dialplans for redirecting calls to outgoing context.
+    ; Redirect international calls in format 00441234567890.
+    exten => _00X.,1,Goto(outgoing,${EXTEN:2},1)
+    ; Redirect international calls in format +441234567890.
+    exten => _+X.,1,Goto(outgoing,${EXTEN:1},1)
+    ; Redirect outgoing national calls in format 01234567890.
+    exten => _0ZX.,1,Goto(outgoing,44${EXTEN:1},1)
\ No newline at end of file
diff --git a/asterisk/modules.conf b/asterisk/modules.conf
new file mode 100644
index 0000000..c008fd9
--- /dev/null
+++ b/asterisk/modules.conf
@@ -0,0 +1,2 @@
+[modules]
+    autoload=yes
\ No newline at end of file
diff --git a/asterisk/sip.conf b/asterisk/sip.conf
new file mode 100644
index 0000000..63fb2ef
--- /dev/null
+++ b/asterisk/sip.conf
@@ -0,0 +1,35 @@
+[general]
+    ; Default context for incoming calls.
+    context=public
+    ; Determines whether a phone is available before accepting call.
+    qualify=yes
+
+; Settings common to all trunks.
+[trunk](!)
+    type=peer
+    nat=no
+    qualify=yes
+    insecure=port,invite
+    dtmfmode=rfc2833
+    allow=ulaw,alaw,G729
+
+; Settings common to all internal extensions.
+[internal](!)
+    context=internal
+    type=friend
+    host=dynamic
+    allow=ulaw,alaw,G729
+
+
+; Twilio trunk.
+[twilio](trunk)
+    context=+441234567890
+    fromuser=+441234567890
+    host=jacknet-gloucester.pstn.ie1.twilio.com
+
+; Internal extensions.
+[1000](internal)
+    secret=supersecurepassword
+
+[1001](internal)
+    secret=supersecurepassword
diff --git a/asterisk/voicemail.conf b/asterisk/voicemail.conf
new file mode 100644
index 0000000..96affc6
--- /dev/null
+++ b/asterisk/voicemail.conf
@@ -0,0 +1,12 @@
+[general]
+    format=wav
+    maxsilence=10
+    maxmessage=180
+
+[default]
+    ; Voicemail inbox for missed dialgroup calls.
+    0 => 0000,0,test@example.com
+
+    ; Voicemail inboxes for individual extensions.
+    1000 => 0000,1000,test@example.com
+    1001 => 0000,1001,test@example.com
\ No newline at end of file