diff --git a/roles/pbx/defaults/main.yml b/roles/pbx/defaults/main.yml
index 94449dfb9..0271907a7 100644
--- a/roles/pbx/defaults/main.yml
+++ b/roles/pbx/defaults/main.yml
@@ -15,11 +15,11 @@
 # All above are set in: github.com/iiab/iiab/blob/master/vars/default_vars.yml
 # If nec, change them by editing /etc/iiab/local_vars.yml prior to installing!
 
-asterisk_url: http://downloads.asterisk.org/pub/telephony/asterisk/
+asterisk_url: http://downloads.asterisk.org/pub/telephony/asterisk
 asterisk_src_file: asterisk-18-current.tar.gz
 asterisk_src_dir: /opt/iiab/asterisk
 
-freepbx_url: http://mirror.freepbx.org/modules/packages/freepbx/7.4/
+freepbx_url: http://mirror.freepbx.org/modules/packages/freepbx/7.4
 freepbx_src_file: freepbx-16.0-latest.tgz    # Beta as of 2021-06-21 but looking great!  Does NOT support PHP < 7.4 (you've been warned!)  Please review https://github.com/iiab/iiab/blob/master/roles/pbx/README.rst
 freepbx_src_dir: /opt/iiab/freepbx
 freepbx_install_dir: /var/www/html/freepbx
@@ -30,6 +30,6 @@ asterisk_db_dbname: asterisk
 asterisk_db_password: asterisk
 asterisk_db_cdrdbname: asteriskcdrdb
 
-chan_dongle_url: https://github.com/wdoekes/asterisk-chan-dongle/archive/
+chan_dongle_url: https://github.com/wdoekes/asterisk-chan-dongle/archive
 chan_dongle_src_file: master.zip
 chan_dongle_src_dir: /opt/iiab/chan_dongle
diff --git a/roles/pbx/tasks/asterisk.yml b/roles/pbx/tasks/asterisk.yml
index 1ecc5feae..909f5ef3b 100644
--- a/roles/pbx/tasks/asterisk.yml
+++ b/roles/pbx/tasks/asterisk.yml
@@ -1,7 +1,16 @@
-# 2021-08-03: Asterisk's own install_prereq (below) handles these?
+# 2021-08-05: Asterisk's own install_prereq (below) handles essentially all of these
 #- name: Asterisk - Install dependencies
 #  include: asterisk_dependencies.yml
 
+# BEWARE: 'systemctl is-active asterix' falsely reports 'inactive' even when systemd
+# is compiled in below!   FWIW: /opt/iiab/asterisk/contrib/systemd/asterisk.service
+# https://github.com/asterisk/asterisk/blob/master/contrib/systemd/asterisk.service
+
+- name: Asterisk - Install package 'libsystemd-dev' so Asterisk compiles in imperfect-but-improving systemd support -- if ./configure below places '#define HAVE_SYSTEMD 1' in /opt/iiab/asterisk/include/asterisk/autoconfig.h -- please later confirm with 'ldd /usr/sbin/asterisk | grep systemd' -- per https://community.asterisk.org/t/systemctl-start-asterisk-is-fail-with-timeout/81123/3
+  package:
+    name: libsystemd-dev
+    state: present
+
 - name: Asterisk - Download {{ asterisk_url }}/{{ asterisk_src_file }} to {{ downloads_dir }}
   get_url:
     url: "{{ asterisk_url }}/{{ asterisk_src_file }}"
@@ -48,8 +57,7 @@
   args:
     chdir: "{{ asterisk_src_dir }}"
 
-# 2021-08-03: Requires subversion (installed just above)
-- name: Asterisk - Download mp3 decoder library into source tree
+- name: Asterisk - Download mp3 decoder library into source tree - requires 'subversion' installed just above
   command: ./contrib/scripts/get_mp3_source.sh
   args:
     chdir: "{{ asterisk_src_dir }}"
@@ -75,7 +83,7 @@
   args:
     chdir: "{{ asterisk_src_dir }}"
 
-- name: Asterisk - Run 'make' - CAN TAKE 30 MIN OR LONGER!
+- name: Asterisk - Run 'make' - CAN TAKE 8-30 MIN OR LONGER!
   command: make
   args:
     chdir: "{{ asterisk_src_dir }}"
@@ -98,7 +106,7 @@
     chdir: "{{ asterisk_src_dir }}"
 
 - name: Asterisk - Run 'ldconfig'
-  shell: ldconfig
+  command: ldconfig
   args:
     chdir: "{{ asterisk_src_dir }}"
 
@@ -108,7 +116,7 @@
     name: asterisk
     state: present
 
-- name: "Asterisk - Ensure user 'asterisk' exists, and belongs to groups: audio,dialout"
+- name: Asterisk - Ensure system user 'asterisk' has primary group 'asterisk', groups 'audio,dialout', home '/var/lib/asterisk'
   user:
     name: asterisk
     group: asterisk
@@ -117,7 +125,7 @@
     system: yes
     append: yes
 
-- name: "Asterisk - Set ownership (asterisk:asterisk) for 5 directories: /etc/asterisk, /var/lib/asterisk, /var/log/asterisk, /var/spool/asterisk, /usr/lib/asterisk"
+- name: Asterisk - Set ownership for 5 directories (asterisk:asterisk, recurse)
   file:
     dest: "{{ item }}"
     owner: asterisk
diff --git a/roles/pbx/tasks/asterisk_dependencies.yml.unused b/roles/pbx/tasks/asterisk_dependencies.yml.unused
index 0738ddfe4..a3f26a5c3 100644
--- a/roles/pbx/tasks/asterisk_dependencies.yml.unused
+++ b/roles/pbx/tasks/asterisk_dependencies.yml.unused
@@ -1,12 +1,12 @@
 - name: Asterisk - Install dependencies
   package:
     name:
-      - git
-      - curl
+      - git                # 2021-08-05: Not in Asterisk's install_prereq
+      - curl               # 2021-08-05: Not in Asterisk's install_prereq
       - wget
       - libnewt-dev
       - libssl-dev
-      - libncurses5-dev
+      - libncurses5-dev    # 2021-08-05: Not in Asterisk's install_prereq
       - subversion
       - libsqlite3-dev
       - build-essential
diff --git a/roles/pbx/tasks/chan_dongle.yml b/roles/pbx/tasks/chan_dongle.yml
index d9dab0d0d..119b552fd 100644
--- a/roles/pbx/tasks/chan_dongle.yml
+++ b/roles/pbx/tasks/chan_dongle.yml
@@ -1,3 +1,5 @@
+# RPi: http://mghadam.blogspot.com/2021/03/install-asterisk-18-freepbx-15-on.html
+
 - name: chan_dongle - Download {{ chan_dongle_url }}/{{ chan_dongle_src_file }} to {{ downloads_dir }}
   get_url:
     url: "{{ chan_dongle_url }}/{{ chan_dongle_src_file }}"    # /opt/iiab/downloads/master.zip
diff --git a/roles/pbx/tasks/enable-or-disable.yml b/roles/pbx/tasks/enable-or-disable.yml
index e60921b59..a83a0befb 100644
--- a/roles/pbx/tasks/enable-or-disable.yml
+++ b/roles/pbx/tasks/enable-or-disable.yml
@@ -1,40 +1,14 @@
-# 2021-08-04: Stanza below commonly causes systemd error "Asterisk is already
-# running.  /etc/init.d/asterisk will exit now" (initial installs especially?)
-#
-# But without this stanza, 'systemctl restart freepbx' all alone during initial
-# install ALSO fails to start Asterisk reliably, on Ubuntu 20.04 & Debian 11 :/
-#
-# Yes /etc/systemd/system/freepbx.service is supposed to run 'fwconsole stop'
-# then 'fwconsole start' reliably, as many web posts recommend, But No Dice!
-#
-# Do we need something like 'RestartSec=3' in freepbx.service ??
-#
-#- name: Enable & (Re)start 'asterisk' systemd service (if pbx_enabled)
-#  systemd:
-#    daemon_reload: yes
-#    name: asterisk
-#    enabled: yes
-#    state: restarted
-#  when: pbx_enabled
-
-#- name: Disable & Stop 'asterisk' systemd service (if not pbx_enabled)
-#  systemd:
-#    daemon_reload: yes
-#    name: asterisk
-#    enabled: no
-#    state: stopped
-#  when: not pbx_enabled
-
-
-- name: Enable & (Re)start 'freepbx' systemd service (if pbx_enabled)
+- name: Enable & (Re)start 'freepbx' systemd service, if pbx_enabled
   systemd:
+    daemon_reload: yes
     name: freepbx
     enabled: yes
     state: restarted
   when: pbx_enabled
 
-- name: Disable & Stop 'freepbx' systemd service (if not pbx_enabled)
+- name: Disable & Stop 'freepbx' systemd service, if not pbx_enabled
   systemd:
+    daemon_reload: yes
     name: freepbx
     enabled: no
     state: stopped
@@ -51,5 +25,23 @@
 
 - name: Restart Apache service ({{ apache_service }})
   systemd:
-    name: "{{ apache_service }}"    # httpd or apache2
+    name: "{{ apache_service }}"    # apache2
     state: restarted
+
+
+# - name: Enable http://box/freepbx via NGINX, by installing {{ nginx_conf_dir }}/freepbx-nginx.conf from template
+#   template:
+#     src: freepbx-nginx.conf.j2
+#     dest: "{{ nginx_conf_dir }}/freepbx-nginx.conf"    # /etc/nginx/conf.d
+#   when: pbx_enabled
+
+# - name: Disable http://box/freepbx via NGINX, by removing {{ nginx_conf_dir }}/freepbx-nginx.conf
+#   file:
+#     path: "{{ nginx_conf_dir }}/freepbx-nginx.conf"
+#     state: absent
+#   when: not pbx_enabled
+
+# - name: Restart 'nginx' systemd service
+#   systemd:
+#     name: nginx
+#     state: restarted
diff --git a/roles/pbx/tasks/freepbx.yml b/roles/pbx/tasks/freepbx.yml
index 586df3be6..b02887ae0 100644
--- a/roles/pbx/tasks/freepbx.yml
+++ b/roles/pbx/tasks/freepbx.yml
@@ -1,3 +1,8 @@
+# https://wiki.freepbx.org/display/FOP/Installing+FreePBX+16+on+Debian+10.9
+# https://computingforgeeks.com/how-to-install-asterisk-16-with-freepbx-15-on-ubuntu-debian/
+# RPi: http://mghadam.blogspot.com/2021/03/install-asterisk-18-freepbx-15-on.html
+# 2012-2017: http://www.raspberry-asterisk.org
+
 - name: FreePBX - Install dependencies
   include: freepbx_dependencies.yml
 
@@ -45,12 +50,21 @@
 #     dest: "{{ freepbx_src_dir }}/amp_conf/htdocs/admin/libraries/Composer/vendor/neitanod/forceutf8/src/ForceUTF8/Encoding.php"
 
 
-- name: FreePBX - Disable & Stop 'asterisk' systemd service
-  systemd:
-    daemon_reload: yes
-    name: asterisk
-    enabled: no
-    state: stopped
+# 2021-08-04: systemd service 'asterisk' is Enabled but Not Active at this point -- LET'S EXPERIMENT
+# - name: FreePBX - Disable & Stop 'asterisk' systemd service
+#   systemd:
+#     daemon_reload: yes
+#     name: asterisk
+#     enabled: no
+#     state: stopped
+
+# 2021-08-05: Asterisk's systemd / systemctl support is getting there but Very
+# Imperfect (even when compiled in, as a result of package 'libsystemd-dev' at
+# top of asterisk.tml) so let's follow these "official" instructions for now:
+
+- name: FreePBX - Run 'update-rc.d -f asterisk remove' similar to 'systemctl disable asterisk' giving FreePBX full control during boot - not strictly required but recommended by https://wiki.freepbx.org/display/FOP/Installing+FreePBX+16+on+Debian+10.9
+  command: update-rc.d -f asterisk remove
+
 
 - name: FreePBX - Add MySQL user ({{ asterisk_db_user }})
   mysql_user:
@@ -81,18 +95,7 @@
     login_host: "{{ asterisk_db_host }}"
     state: present
 
-- name: FreePBX - Prevent /etc/asterisk/freepbx_chown.conf take over of /var/lib/php/sessions
-  blockinfile:
-    content: |
-      [blacklist]
-      directory = /var/lib/php/sessions
-    marker: "; {mark} ANSIBLE MANAGED BLOCK"
-    dest: /etc/asterisk/freepbx_chown.conf
-    owner: asterisk
-    group: asterisk
-    create: yes
-
-- name: FreePBX - Create new php sessions dir /var/lib/php/asterisk_sessions/
+- name: FreePBX - Create new php sessions dir /var/lib/php/asterisk_sessions/ - SEE 'php_value session.save_path /var/lib/php/asterisk_sessions/' IN pbx/templates/freepbx.conf.j2
   file:
     path: /var/lib/php/asterisk_sessions/
     state: directory
@@ -104,15 +107,16 @@
     group: asterisk
     recurse: yes
 
-
-- name: FreePBX - 2-stage install (just run once) - CAN TAKE 12 MIN OR LONGER!
-  command: "{{ item }}"
-  args:
-    chdir: "{{ freepbx_src_dir }}"
-    creates: "{{ freepbx_install_dir }}"
-  with_items:
-    - ./start_asterisk start
-    - ./install -n --webroot {{ freepbx_install_dir }} --dbuser {{ asterisk_db_user }} --dbpass {{ asterisk_db_password }} --dbname {{ asterisk_db_dbname }} --cdrdbname {{ asterisk_db_cdrdbname }}
+- name: "FreePBX - Populate /etc/asterisk/freepbx_chown.conf to prevent 'fwconsole chown' takeover of /var/lib/php/sessions - and possibly later /etc/freepbx.conf, /var/log/asterisk/freepbx.log, /var/spool/asterisk/cache"
+  blockinfile:
+    content: |
+      [blacklist]
+      directory = /var/lib/php/sessions
+    marker: "; {mark} ANSIBLE MANAGED BLOCK"
+    dest: /etc/asterisk/freepbx_chown.conf
+    owner: asterisk
+    group: asterisk
+    create: yes
 
 # 2021-08-04: FreePBX 16 no longer needs this FreePBX 15 patch
 # - name: FreePBX - Patch FreePBX source - disable get_magic_quotes_gpc()
@@ -120,15 +124,55 @@
 #     src: roles/pbx/templates/pbx2.patch
 #     dest: "{{ freepbx_install_dir }}/admin/libraries/view.functions.php"
 
-- name: FreePBX - Install /etc/odbc.ini from template (root:root, 0644 by default)
-  template:
-    src: odbc.ini.j2
-    dest: /etc/odbc.ini
 
-- name: FreePBX - Install /etc/systemd/system/freepbx.service systemd unit file from template (root:root, 0644 by default)
+- name: FreePBX - 2-step install (just run once) - CAN TAKE 3-12 MIN OR LONGER!
+  command: "{{ item }}"
+  args:
+    chdir: "{{ freepbx_src_dir }}"
+    creates: "{{ freepbx_install_dir }}"    # /var/www/html/freepbx
+  with_items:
+    - ./start_asterisk start
+    - ./install -n --webroot {{ freepbx_install_dir }} --dbuser {{ asterisk_db_user }} --dbpass {{ asterisk_db_password }} --dbname {{ asterisk_db_dbname }} --cdrdbname {{ asterisk_db_cdrdbname }}
+    # - ./start_asterisk stop
+    # - killall -9 safe_asterisk    # 2021-08-05: These 2 lines from PR #2912 attempted a brute force (not enough!) workaround for the #2908 annoyance on 1st
+    # - killall -9 asterisk         # install, of 'systemctl status freepbx' showing "Unable to run Pre-Asterisk hooks, because Asterisk is already running"
+    # - /usr/sbin/asterisk -rx "core stop gracefully"
+
+# - name: 'FreePBX - fix file permissions for NGINX: /etc/freepbx.conf (0644), /var/log/asterisk/freepbx.log (0666)'
+#   file:
+#     #state: file
+#     path: "{{ item.path }}"
+#     mode: "{{ item.mode }}"
+#   with_items:
+#     - { path: '/etc/freepbx.conf', mode: u=rw,g=r,o=r }                  # 2021-08-04: LATER ENDS UP AS 0660
+#     - { path: '/var/log/asterisk/freepbx.log', mode: u=rw,g=rw,o=rw }    # 2021-08-04: LATER ENDS UP AS 0664
+
+# - name: 'FreePBX - fix dir permissions for NGINX: /var/spool/asterisk/cache (0777)'
+#   file:
+#     state: directory
+#     path: "{{ item }}"
+#     mode: u=rwx,g=rwx,o=rwx    # 2021-08-04: MOST CONTENT THEREIN ENDS UP AS asterisk:asterisk 664 (files) & 775 (dirs)
+#     # recurse: yes             # Probably Doesn't Help?
+#   with_items:
+#     # - /var/www/html/freepbx/admin/assets/less/cache
+#     - /var/spool/asterisk/cache
+
+- name: FreePBX - Install /etc/odbc.ini from template (root:root, 0644 by default) - in future consider compiling ODBC driver for aarch64 per http://mghadam.blogspot.com/2021/03/install-asterisk-18-freepbx-15-on.html ?
   template:
-    src: freepbx.service.j2
-    dest: /etc/systemd/system/freepbx.service
+    src: odbc.ini
+    dest: /etc/
+
+- name: FreePBX - Install /etc/systemd/system/freepbx.service from template (root:root, 0644 by default)
+  template:
+    src: freepbx.service
+    dest: /etc/systemd/system/
+
+- name: FreePBX - Run 'systemctl restart freepbx' TWICE (THIS IS 1 OF 2) to get past 'systemctl status freepbx' glitch "Unable to run Pre-Asterisk hooks, because Asterisk is already running"
+  systemd:
+    daemon_reload: yes
+    name: freepbx
+    enabled: yes
+    state: restarted
 
 
 - name: FreePBX - Install /etc/apache2/sites-available/freepbx.conf from template ({{ apache_user }}:{{ apache_user }}, 0644 by default)
diff --git a/roles/pbx/tasks/install.yml b/roles/pbx/tasks/install.yml
index d6b32348a..36e0190fa 100644
--- a/roles/pbx/tasks/install.yml
+++ b/roles/pbx/tasks/install.yml
@@ -32,34 +32,11 @@
     name: httpd
 
 
-# 2021-07-27: Taken care of by main.yml
-#- name: TODO: Check if asterisk and freepbx are already installed
-#
-#- name: Check if /etc/systemd/system/freepbx.service is already installed
-#  stat: 
-#    path: /etc/systemd/system/freepbx.service
-#  register: freepbx_installed
-#
-#- debug:
-#    msg: >-
-#      FreePBX already installed. Reinstall shall be skipped
-#  when: freepbx_installed.stat.exists
-
-# 2021-08-03: Taken care of by asterisk.yml's scripts/install_prereq
-#- name: Install 'make' package
-#  package:
-#    name: make
-#    state: present
-
 - name: Install Asterisk
   include_tasks: asterisk.yml
-  #when: internet_available and pbx_install and (pbx_installed is undefined) and is_debuntu and (not freepbx_installed.stat.exists)
-  #when: internet_available and pbx_install and (not pbx_installed) and ((is_debian and ansible_distribution_major_version == "9") or is_ubuntu_18)
 
 - name: Install FreePBX
   include_tasks: freepbx.yml
-  #when: internet_available and pbx_install and (pbx_installed is undefined) and is_debuntu and (not freepbx_installed.stat.exists)
-  #when: internet_available and pbx_install and (not pbx_installed) and ((is_debian and ansible_distribution_major_version == "9") or is_ubuntu_18)
 
 
 # RECORD PBX AS INSTALLED
diff --git a/roles/pbx/templates/freepbx.service.j2 b/roles/pbx/templates/freepbx.service
similarity index 52%
rename from roles/pbx/templates/freepbx.service.j2
rename to roles/pbx/templates/freepbx.service
index 8ac644dc4..42b46abf0 100644
--- a/roles/pbx/templates/freepbx.service.j2
+++ b/roles/pbx/templates/freepbx.service
@@ -7,9 +7,8 @@ Type=oneshot
 RemainAfterExit=yes
 ExecStart=/usr/sbin/fwconsole start
 ExecStop=/usr/sbin/fwconsole stop
-# 2021-08-04: Does this help Asterisk (re)start reliably, as FreePBX install completes?
-# PR #2908: https://github.com/iiab/iiab/blob/master/roles/pbx/tasks/enable-or-disable.yml
-RestartSec=3
+# 2021-08-04: Asterisk doesn't (re)start reliably, as FreePBX install completes,
+# especially on Debian 11?  https://github.com/iiab/iiab/pull/2908 / PR #2910
 
 [Install]
 WantedBy=multi-user.target
diff --git a/roles/pbx/templates/odbc.ini.j2 b/roles/pbx/templates/odbc.ini
similarity index 100%
rename from roles/pbx/templates/odbc.ini.j2
rename to roles/pbx/templates/odbc.ini