[asterisk] Handle inbound and outbound PSTN calls

roles/asterisk/templates/extensions.conf.j2

@@ -1,4 +1,45 @@
+[incoming]
+exten => _.,1,NoOp()
+    same = n,Verbose(Inbound call to ${EXTEN} detected)
+    same = n,Set(DIALGROUP(incoming,add)=PJSIP/100)
+    same = n,Set(DIALGROUP(incoming,add)=PJSIP/101)
+    same = n,Set(DIALGROUP(incoming,add)=PJSIP/102)
+    same = n,Dial(${DIALGROUP(incoming)},15)
+    same = n,Set(MAILBOXES=${PJSIP_ENDPOINT(pstn,mailboxes)})
+    same = n,ExecIf($[${LEN(${MAILBOXES})} = 0]?Congestion(10))
+    same = n,Voicemail(${MAILBOXES},uS)
+    same = n,Playback(vm-goodbye)
+    same = n,Hangup()
+
 [from-internal]
+
+; Emergency outbound dialing
+exten => 911,1,NoOp()
+    same = n,Goto(dialout,${EXTEN},1)
+
+; Emergency test outbound dialing
+; (Doesn't seem to be supported on Verizon FiOS)
+exten => 933,1,NoOp()
+    same = n,Goto(dialout,${EXTEN},1)
+
+; 7+ digit calls are routed outside via the PSTN
+exten => _NXXXXXX.,1,NoOp()
+    same = n,Goto(dialout,${EXTEN},1)
+
+exten => _1NXXXXXX.,1,NoOp()
+    same = n,Goto(dialout,${EXTEN},1)
+
+; Landline-related extensions
+exten => 436,1,NoOp()
+    same = n,Verbose(Testing inbound calling?)
+    same = n,Goto(incoming,${EXTEN},1)
+
+exten => *436,1,Answer()
+    same = n,Wait(1)
+    same = n,VoicemailMain(436@sailmaker,s)
+    same = n,Hangup()
+
+; Dummy extensions
 exten => 700,1,Answer()
     same = n,Wait(1)
     same = n,Playback(hello-world)
@@ -6,6 +47,7 @@ exten => 700,1,Answer()
     same = n,Playback(tt-monkeys)
     same = n,Hangup()
 
+; Other extensions
 3-digit extensions dial their associated devices
 exten => _XXX,1,Dial(PJSIP/${EXTEN}, 15)
     same = n,Set(MAILBOXES=${PJSIP_ENDPOINT(${EXTEN},mailboxes)})
@@ -26,6 +68,8 @@ exten => _XXX*,1,Answer()
     same = n,Voicemail(${EXTEN:0:-1}@sailmaker,u)
     same = n,Hangup()
 
-; 7+ digit calls are routed outside via the PSTN
+[dialout]
-exten => _NXXXXXX.,1,Dial(PJSIP/pstn/${EXTEN})
+exten => _X!,1,NoOp()
+    same = n,Verbose(Dialing out to ${EXTEN})
+    same = n,Dial(PJSIP/${EXTEN}@pstn)
     same = n,Hangup()

roles/asterisk/templates/pjsip.conf.j2

@@ -15,7 +15,7 @@ disallow=all
 allow=ulaw
 auth=100
 aors=100
-mailboxes=100@sailmaker
+mailboxes=100@sailmaker,436@sailmaker
 
 [100]
 type=auth
@@ -73,11 +73,12 @@ remove_existing=yes
 
 [pstn]
 type=endpoint
-context=from-internal
+context=incoming
 disallow=all
 allow=ulaw
 auth=pstn
 aors=pstn
+mailboxes=436@sailmaker
 
 [pstn]
 type=auth

roles/asterisk/templates/voicemail.conf.j2

@@ -588,4 +588,8 @@ european=Europe/Copenhagen|'vm-received' a d b 'digits/at' HM
 ;4325 => 2392,Andrew Dufresne,andy@dufresne.info,,imapuser=adufresne|imappassword=rockh@mmer
 
 [sailmaker]
+; Primary home mailbox
+436 => 436,Weidner Household,
+
+; User mailboxes
 100 => 100,Correl Roush,