diff --git a/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/CDR.pm b/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/CDR.pm
index 296c3b44..8b22a2c1 100644
--- a/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/CDR.pm
+++ b/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/CDR.pm
@@ -27,6 +27,9 @@ use NGCP::BulkProcessor::Projects::Export::Ama::Ccs::Settings qw(
 
     $ivr_duration_limit
     $primary_alias_pattern
+
+    $switch_number_pattern
+    $switch_number_replacement
 );
 
 use NGCP::BulkProcessor::Logging qw (
@@ -425,7 +428,7 @@ sub _export_cdrs_init_context {
             correlation_id => substr($parent_cdrs->[0]->{id},-7),
             nod => {
                 originating_digits => $originating,
-                switch_number_digits => $terminating, #$scenario->{ccs_subscriber}->{primary_alias}->{username},
+                switch_number_digits => _rewrite_switch_number($terminating), #$scenario->{ccs_subscriber}->{primary_alias}->{username},
                 mode => '0001',
             },
         });
@@ -441,7 +444,7 @@ sub _export_cdrs_init_context {
             correlation_id => substr($parent_cdrs->[0]->{id},-7),
             nod => {
                 originating_digits => $originating,
-                switch_number_digits => $terminating, #$scenario->{ccs_subscriber}->{primary_alias}->{username},
+                switch_number_digits => _rewrite_switch_number($terminating), #$scenario->{ccs_subscriber}->{primary_alias}->{username},
                 mode => '6001',
             },
         },{
@@ -453,7 +456,7 @@ sub _export_cdrs_init_context {
             correlation_id => substr($parent_cdrs->[0]->{id},-7),
             nod => {
                 originating_digits => $originating,
-                switch_number_digits => $terminating, #$scenario->{ccs_subscriber}->{primary_alias}->{username},
+                switch_number_digits => _rewrite_switch_number($terminating), #$scenario->{ccs_subscriber}->{primary_alias}->{username},
                 mode => '2002',
             },
         });
@@ -469,7 +472,7 @@ sub _export_cdrs_init_context {
             correlation_id => substr($parent_cdrs->[0]->{id},-7),
             nod => {
                 originating_digits => $originating,
-                switch_number_digits => $terminating, #$scenario->{ccs_subscriber}->{primary_alias}->{username},
+                switch_number_digits => _rewrite_switch_number($terminating), #$scenario->{ccs_subscriber}->{primary_alias}->{username},
                 mode => '0001',
             },
         });
@@ -485,7 +488,7 @@ sub _export_cdrs_init_context {
             correlation_id => substr($parent_cdrs->[0]->{id},-7),
             nod => {
                 originating_digits => $originating,
-                switch_number_digits => $terminating, #$scenario->{ccs_subscriber}->{primary_alias}->{username},
+                switch_number_digits => _rewrite_switch_number($terminating), #$scenario->{ccs_subscriber}->{primary_alias}->{username},
                 mode => '6001',
             },
         },{
@@ -497,7 +500,7 @@ sub _export_cdrs_init_context {
             correlation_id => substr($parent_cdrs->[0]->{id},-7),
             nod => {
                 originating_digits => $originating,
-                switch_number_digits => $terminating, #$scenario->{ccs_subscriber}->{primary_alias}->{username},
+                switch_number_digits => _rewrite_switch_number($terminating), #$scenario->{ccs_subscriber}->{primary_alias}->{username},
                 mode => '2002',
             },
         });
@@ -514,7 +517,7 @@ sub _export_cdrs_init_context {
             correlation_id => substr($parent_cdrs->[0]->{id},-7),
             nod => {
                 originating_digits => $originating,
-                switch_number_digits => $terminating, #$scenario->{ccs_subscriber}->{primary_alias}->{username},
+                switch_number_digits => _rewrite_switch_number($terminating), #$scenario->{ccs_subscriber}->{primary_alias}->{username},
                 mode => '0001',
             },
         });
@@ -531,7 +534,7 @@ sub _export_cdrs_init_context {
             correlation_id => substr($parent_cdrs->[0]->{id},-7),
             nod => {
                 originating_digits => $originating,
-                switch_number_digits => $terminating, #$scenario->{ccs_subscriber}->{primary_alias}->{username},
+                switch_number_digits => _rewrite_switch_number($terminating), #$scenario->{ccs_subscriber}->{primary_alias}->{username},
                 mode => '6001',
             },
         },{
@@ -543,7 +546,7 @@ sub _export_cdrs_init_context {
             correlation_id => substr($parent_cdrs->[0]->{id},-7),
             nod => {
                 originating_digits => $originating,
-                switch_number_digits => $terminating, #$scenario->{ccs_subscriber}->{primary_alias}->{username},
+                switch_number_digits => _rewrite_switch_number($terminating), #$scenario->{ccs_subscriber}->{primary_alias}->{username},
                 mode => '2002',
             },
         });
@@ -553,6 +556,16 @@ sub _export_cdrs_init_context {
 
 }
 
+sub _rewrite_switch_number {
+
+    my ($switch_number) = @_;
+    if (defined $switch_number_pattern and defined $switch_number_replacement) {
+        $switch_number =~ s/$switch_number_pattern/$switch_number_replacement/;
+    }
+    return $switch_number;
+
+}
+
 sub _commit_export_status {
 
     my %params = @_;
diff --git a/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/Settings.pm b/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/Settings.pm
index 340c5e4f..fce1ce82 100644
--- a/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/Settings.pm
+++ b/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/Settings.pm
@@ -63,6 +63,9 @@ our @EXPORT_OK = qw(
 
     $ivr_duration_limit
     $primary_alias_pattern
+
+    $switch_number_pattern
+    $switch_number_replacement
 );
 
 our $defaultconfig = 'config.cfg';
@@ -92,6 +95,8 @@ our $ama_terminating_digits_cdr_field;
 
 our $ivr_duration_limit = 5;
 our $primary_alias_pattern = undef;
+our $switch_number_pattern = undef;
+our $switch_number_replacement = undef;
 
 sub update_settings {
 
@@ -140,6 +145,12 @@ sub update_settings {
         ($regexp_result,$primary_alias_pattern) = parse_regexp($primary_alias_pattern,$configfile);
         $result &= $regexp_result;
 
+        $switch_number_pattern = $data->{switch_number_pattern} if exists $data->{switch_number_pattern};
+        ($regexp_result,$switch_number_pattern) = parse_regexp($switch_number_pattern,$configfile);
+        $result &= $regexp_result;
+
+        $switch_number_replacement = $data->{switch_number_replacement} if exists $data->{switch_number_replacement};
+
         return $result;
 
     }
diff --git a/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/settings.cfg b/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/settings.cfg
index da2cb7c0..464686ee 100644
--- a/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/settings.cfg
+++ b/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/settings.cfg
@@ -29,4 +29,7 @@ ama_originating_digits_cdr_field = source_cli
 ama_terminating_digits_cdr_field = destination_user_in
 
 ivr_duration_limit = 5
-primary_alias_pattern = 431976
\ No newline at end of file
+primary_alias_pattern = 431976
+
+switch_number_pattern = 43
+switch_number_replacement =
\ No newline at end of file
diff --git a/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/settings.debug.cfg b/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/settings.debug.cfg
index 03043dca..8624459d 100644
--- a/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/settings.debug.cfg
+++ b/lib/NGCP/BulkProcessor/Projects/Export/Ama/Ccs/settings.debug.cfg
@@ -31,4 +31,7 @@ ama_originating_digits_cdr_field = source_cli
 ama_terminating_digits_cdr_field = destination_user_in
 
 ivr_duration_limit = 5
-#primary_alias_pattern = 431976
\ No newline at end of file
+#primary_alias_pattern = 431976
+
+switch_number_pattern = 43
+switch_number_replacement =
\ No newline at end of file