diff --git a/docs/ngcpcfg.txt b/docs/ngcpcfg.txt
index 0e6146ab..5f72e12e 100644
--- a/docs/ngcpcfg.txt
+++ b/docs/ngcpcfg.txt
@@ -99,34 +99,64 @@ hosts changes should be pushed to.
 Supported template files
 ~~~~~~~~~~~~~~~~~~~~~~~~
 
-Example for generating a configuration file named_/etc/foobar/baz_:
+Example for generating a configuration file named_/etc/foobar/baz_  (from lower
+precedence to higher precedence):
 
 * _/etc/ngcp-config/templates/etc/foobar/baz.tt2_: main and default template
 file, used by template-handler for generating /etc/foobar/baz. Configuration
 file is usually provided by a Debian package.
 
-* _/etc/ngcp-config/templates/etc/foobar/baz.customtt.tt2_: system specific
-template file, but configuration usually isn't provided by a Debian package and
-can be modified independent from any Debian package mechanism.
-
 * _/etc/ngcp-config/templates/etc/foobar/baz.tt2.$HA_NODE_: node specific
 template file. $HA_NODE is determined using the content of /etc/ngcp_ha_node
 (usually being _sp1_ for the first node and _sp2_ for the second node on the
 Sipwise Next Generation Platform). Wheras _*customtt.tt2_ files are used on all
 nodes in a High Availability setup the _*.tt2.$HA_NODE*_ file is specific for
 the single node only. A common usage case is master vs. slave configuration of a
-service. Configuration file is usually provided by a Debian package. Note:
-Feature is available in the High Availability setup only.
+service. Configuration file is usually provided by a Debian package.
+Note: Feature is available in the High Availability setup only.
+
+* _/etc/ngcp-config/templates/etc/foobar/baz.tt2.$PAIRNAME_: pair specific
+template file. Given a PRO pair in a CARRIER environment where two nodes are
+named _web01a_ and _web01b_ then $PAIRNAME corresponds to _web01_. This is
+useful if there are multiple pairs available but only a specific pair of them
+should include some specific configuration.
+Note: Feature is available in the High Availability setup only.
+
+* _/etc/ngcp-config/templates/etc/foobar/baz.tt2.$HOSTNAME_: hostname specific
+template file. While $HA_NODE is usually bound to _sp1_ for the first node and
+_sp2_ via /etc/ngcp_ha_node it's possible to use host specific template file by
+referring to its hostname ($HOSTNAME is determined via (hostname(1)).
+Note: Feature is available in the High Availability setup only.
+
+* _/etc/ngcp-config/templates/etc/foobar/baz.customtt.tt2_: system specific
+template file, but configuration usually isn't provided by a Debian package and
+can be modified independent from any Debian package mechanism.
 
 * _/etc/ngcp-config/templates/etc/foobar/baz.customtt.tt2.$HA_NODE_: node
 specific template file. Regarding $HA_NODE the same as for _baz.tt2.$HA_NODE_
 applies (see previous bullet), but the configuration file usually isn't provided
 by a Debian package but can be modified independent from any Debian package
-mechanism. Note: Feature is available in the High Availability setup only.
+mechanism.
+Note: Feature is available in the High Availability setup only.
+
+* _/etc/ngcp-config/templates/etc/foobar/baz.customtt.tt2.$PAIRNAME_:
+configuration file similar to
+_/etc/ngcp-config/templates/etc/foobar/baz.tt2.$PAIRNAME_ but it's guaranteed
+that the file won't be part of any Debian package mechanism.  Note: Feature is
+available in the High Availability setup only.
+
+* _/etc/ngcp-config/templates/etc/foobar/baz.customtt.tt2.$HOSTNAME_:
+configuration file similar to
+_/etc/ngcp-config/templates/etc/foobar/baz.tt2.$HOSTNAME_ but it's guaranteed
+that the file won't be part of any Debian package mechanism.  Note: Feature is
+available in the High Availability setup only.
+Note: Feature is available in the High Availability setup only.
 
 [IMPORTANT]
-Configuration file priority: *.customtt.tt2.$HA_NODE takes precedence over
-*.customtt.tt2, over *.tt2.$HA_NODE, over *.tt2.
+Configuration file priority: *.customtt.tt2.$HOSTNAME takes precedence over
+*.customtt.tt2.$PAIRNAME, over .customtt.tt2.$HA_NODE, over *.customtt.tt2, over
+*.tt2.$HOSTNAME, over *.tt2.$PAIRNAME, over *.tt2.$HA_NODE, over *.tt2.
+
 
 Support action related files
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/functions/main b/functions/main
index bab04dff..491593b3 100644
--- a/functions/main
+++ b/functions/main
@@ -203,6 +203,7 @@ fi
 
 if [ -r /usr/share/ngcp-ngcpcfg/functions/carrier_features ] ; then
   . /usr/share/ngcp-ngcpcfg/functions/carrier_features
+  set_host_and_pair_files # set $HOST_FILE + $PAIR_FILE for usage in generate_template_list
 fi
 ## }}}
 
@@ -216,7 +217,7 @@ generate_template_list() {
   for dir in ${CONFIG_POOL} ; do
     [ -n "${dir}" ] || ( echo "${dir} doesn't exist" >&2 ; continue )
     # iterate over all files
-    for file in $(find "$TEMPLATE_POOL_BASE/${dir}" -name \*.tt2 -o -name \*.tt2"${HA_FILE:-}") ; do
+    for file in $(find "$TEMPLATE_POOL_BASE/${dir}" -name \*.tt2 -o -name \*.tt2"${HA_FILE:-}" -o -name \*.tt2"${HOST_FILE:-}" -o -name \*.tt2"${PAIR_FILE:-}") ; do
       # *NO* arguments provided via cmdline
       if [ -z "${1:-}" ] ; then
         echo "$file" >> "${filelist_prepared}"
@@ -232,18 +233,42 @@ generate_template_list() {
   done
 
   # remove all filenames where a preferred filename exists
-  # foo.customtt.tt2.spX > foo.customtt.tt2 > foo.tt2.spX > foo.tt2
+  # foo.customtt.tt2.hostname > foo.customtt.tt2.pairname > foo.customtt.tt2.spX > foo.customtt.tt2 > foo.tt2.hostname > foo.tt2.pairname > foo.tt2.spX > foo.tt2
   for line in $(cat ${filelist_prepared}); do
 
-    # reduce filenames from "foo.*" to "foo"
+    normalized_filename="$line"
+
     if [ -n "${HA_FILE:-}" ] ; then
-      normalized_filename="${line%${HA_FILE}}"
-    else
-      normalized_filename="${line}"
+      normalized_filename="${normalized_filename%${HA_FILE}}"
+    fi
+
+    if [ -n "${HOST_FILE:-}" ] ; then
+      normalized_filename="${normalized_filename%${HOST_FILE}}"
     fi
+
+    if [ -n "${PAIR_FILE:-}" ] ; then
+      normalized_filename="${normalized_filename%${PAIR_FILE}}"
+    fi
+
     normalized_filename="${normalized_filename%.customtt.tt2}"
     normalized_filename="${normalized_filename%.tt2}"
 
+    # foo.custom.tt2.hostname
+    if [ -n "${HOST_FILE:-}" ] ; then
+      if grep -q -- "^${normalized_filename}.customtt.tt2${HOST_FILE}$" "${filelist_prepared}" ; then
+        echo "${normalized_filename}.customtt.tt2${HOST_FILE}" >> "${filelist_final}"
+        continue
+      fi
+    fi
+
+    # foo.custom.tt2.pairname
+    if [ -n "${PAIR_FILE:-}" ] ; then
+      if grep -q -- "^${normalized_filename}.customtt.tt2${PAIR_FILE}$" "${filelist_prepared}" ; then
+        echo "${normalized_filename}.customtt.tt2${PAIR_FILE}" >> "${filelist_final}"
+        continue
+      fi
+    fi
+
     # foo.customtt.tt2.sp{1,2}
     if [ -n "${HA_FILE:-}" ] ; then
       if grep -q -- "^${normalized_filename}.customtt.tt2${HA_FILE:-}" "${filelist_prepared}" ; then
@@ -258,6 +283,22 @@ generate_template_list() {
       continue
     fi
 
+    # foo.tt2.hostname
+    if [ -n "${HOST_FILE:-}" ] ; then
+      if grep -q -- "^${normalized_filename}.tt2${HOST_FILE}" "${filelist_prepared}" ; then
+        echo "${normalized_filename}.tt2${HOST_FILE}" >> "${filelist_final}"
+        continue
+      fi
+    fi
+
+    # foo.tt2.pairname
+    if [ -n "${HOST_FILE:-}" ] ; then
+      if grep -q -- "^${normalized_filename}.tt2${PAIR_FILE}" "${filelist_prepared}" ; then
+        echo "${normalized_filename}.tt2${PAIR_FILE}" >> "${filelist_final}"
+        continue
+      fi
+    fi
+
     # foo.tt2.sp{1,2}
     if [ -n "${HA_FILE:-}" ] ; then
       if grep -q -- "^${normalized_filename}.tt2${HA_FILE}" "${filelist_prepared}" ; then
@@ -266,7 +307,7 @@ generate_template_list() {
       fi
     fi
 
-    # file should be used, so list it
+    # another file not matching any previous checks
     echo "$line" >> "${filelist_final}"
   done
 
diff --git a/helper/build_config b/helper/build_config
index a7de5a94..6cf79e58 100755
--- a/helper/build_config
+++ b/helper/build_config
@@ -23,10 +23,12 @@ HELPER="${HELPER:-/usr/share/ngcp-ngcpcfg/helper/}"
 
 input_file="$1"       # like /etc/ngcp-config/templates/etc/mysql/my.cnf.tt2
 # calculate output file {{{
-  x=${input_file##${NGCPCTL_MAIN}/templates/}     # drop leading /etc/ngcp-config
-  y=${x%%.tt2}                                    # drop trailing suffix '.tt2'
-  [ -n "${HA_FILE:-}" ] && y=${y%%.tt2${HA_FILE}} # drop trailing suffix '.tt2.sp{1,2}'
-  y=${y%%.customtt}                               # drop trailing suffix '.customtt'
+  x=${input_file##${NGCPCTL_MAIN}/templates/}         # drop leading /etc/ngcp-config
+  y=${x%%.tt2}                                        # drop trailing suffix '.tt2'
+  [ -n "${HA_FILE:-}" ]   && y=${y%%.tt2${HA_FILE}}   # drop trailing suffix '.tt2.sp{1,2}'
+  [ -n "${PAIR_FILE:-}" ] && y=${y%%.tt2${PAIR_FILE}} # drop trailing suffix '.tt2.pairname'
+  [ -n "${HOST_FILE:-}" ] && y=${y%%.tt2${HOST_FILE}} # drop trailing suffix '.tt2.hostname'
+  y=${y%%.customtt}                                   # drop trailing suffix '.customtt'
 # }}}
 export output_file="${y}" # like /etc/mysql/my.cnf, export variable
                           # for usage within {pre,post}build scripts