diff --git a/hardware/devices/cisco/ces/restapi/mode/callsrt.pm b/hardware/devices/cisco/ces/restapi/mode/callsrt.pm
index 61daa2f0f..7ceb4648f 100644
--- a/hardware/devices/cisco/ces/restapi/mode/callsrt.pm
+++ b/hardware/devices/cisco/ces/restapi/mode/callsrt.pm
@@ -160,7 +160,7 @@ sub set_counters {
                 closure_custom_output => $self->can('custom_loss_output'),
                 threshold_use => 'packets_loss_prct',
                 perfdatas => [
-                    { value => 'packets_loss_prct', template => '%d',
+                    { value => 'packets_loss_prct', template => '%.2f',
                       unit => '%', min => 0, max => 100, label_extra_instance => 1, instance_use => 'display'  },
                 ],
             }
diff --git a/hardware/devices/polycom/trio/restapi/custom/api.pm b/hardware/devices/polycom/trio/restapi/custom/api.pm
new file mode 100644
index 000000000..7a32b2b9d
--- /dev/null
+++ b/hardware/devices/polycom/trio/restapi/custom/api.pm
@@ -0,0 +1,259 @@
+#
+# Copyright 2020 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package hardware::devices::polycom::trio::restapi::custom::api;
+
+use base qw(centreon::plugins::mode);
+
+use strict;
+use warnings;
+use centreon::plugins::http;
+use JSON::XS;
+use Digest::MD5 qw(md5_hex);
+use Fcntl qw(:flock);
+use POSIX;
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
+    bless $self, $class;
+
+    if (!defined($options{output})) {
+        print "Class Custom: Need to specify 'output' argument.\n";
+        exit 3;
+    }
+    if (!defined($options{options})) {
+        $options{output}->add_option_msg(short_msg => "Class Custom: Need to specify 'options' argument.");
+        $options{output}->option_exit();
+    }
+
+    if (!defined($options{noptions})) {
+        $options{options}->add_options(arguments => {
+            'hostname:s'        => { name => 'hostname' },
+            'port:s'            => { name => 'port'},
+            'proto:s'           => { name => 'proto' },
+            'api-username:s'    => { name => 'api_username', default => 'Polycom' },
+            'api-password:s'    => { name => 'api_password' },
+            'timeout:s'         => { name => 'timeout', default => 30 },
+            'lockfile-dir:s'    => { name => 'lockfile_dir', default => '/var/lib/centreon/centplugins' },
+            'unknown-http-status:s'  => { name => 'unknown_http_status' },
+            'warning-http-status:s'  => { name => 'warning_http_status' },
+            'critical-http-status:s' => { name => 'critical_http_status' },
+        });
+    }
+
+    $options{options}->add_help(package => __PACKAGE__, sections => 'REST API OPTIONS', once => 1);
+
+    $self->{output} = $options{output};
+    $self->{mode} = $options{mode};
+    $self->{http} = centreon::plugins::http->new(%options);
+
+    return $self;
+}
+
+sub set_options {
+    my ($self, %options) = @_;
+
+    $self->{option_results} = $options{option_results};
+}
+
+sub set_defaults {
+    my ($self, %options) = @_;
+
+    foreach (keys %{$options{default}}) {
+        if ($_ eq $self->{mode}) {
+            for (my $i = 0; $i < scalar(@{$options{default}->{$_}}); $i++) {
+                foreach my $opt (keys %{$options{default}->{$_}[$i]}) {
+                    if (!defined($self->{option_results}->{$opt}[$i])) {
+                        $self->{option_results}->{$opt}[$i] = $options{default}->{$_}[$i]->{$opt};
+                    }
+                }
+            }
+        }
+    }
+}
+
+sub check_options {
+    my ($self, %options) = @_;
+
+    $self->{hostname} = (defined($self->{option_results}->{hostname})) ? $self->{option_results}->{hostname} : undef;
+    $self->{port} = (defined($self->{option_results}->{port})) ? $self->{option_results}->{port} : 443;
+    $self->{proto} = (defined($self->{option_results}->{proto})) ? $self->{option_results}->{proto} : 'https';
+    $self->{timeout} = (defined($self->{option_results}->{timeout})) ? $self->{option_results}->{timeout} : 30;
+    $self->{api_username} = (defined($self->{option_results}->{api_username})) ? $self->{option_results}->{api_username} : 'Polycom';
+    $self->{api_password} = (defined($self->{option_results}->{api_password})) ? $self->{option_results}->{api_password} : undef;
+    $self->{unknown_http_status} = (defined($self->{option_results}->{unknown_http_status})) ? $self->{option_results}->{unknown_http_status} : '%{http_code} < 200 or %{http_code} >= 300';
+    $self->{warning_http_status} = (defined($self->{option_results}->{warning_http_status})) ? $self->{option_results}->{warning_http_status} : '';
+    $self->{critical_http_status} = (defined($self->{option_results}->{critical_http_status})) ? $self->{option_results}->{critical_http_status} : '';
+    $self->{lockfile_dir} = (defined($self->{option_results}->{lockfile_dir})) ? $self->{option_results}->{lockfile_dir} : '/var/lib/centreon/centplugins';
+
+    $self->{timeout} = $1 if ($self->{timeout} =~ /(\d+)/);
+    if (!defined($self->{hostname}) || $self->{hostname} eq '') {
+        $self->{output}->add_option_msg(short_msg => "Need to specify --hostname option.");
+        $self->{output}->option_exit();
+    }
+    if (!defined($self->{api_username}) || $self->{api_username} eq '') {
+        $self->{output}->add_option_msg(short_msg => "Need to specify --api-username option.");
+        $self->{output}->option_exit();
+    }
+    if (!defined($self->{api_password}) || $self->{api_password} eq '') {
+        $self->{output}->add_option_msg(short_msg => "Need to specify --api-password option.");
+        $self->{output}->option_exit();
+    }
+
+    return 0;
+}
+
+sub build_options_for_httplib {
+    my ($self, %options) = @_;
+
+    $self->{option_results}->{hostname} = $self->{hostname};
+    $self->{option_results}->{timeout} = $self->{timeout};
+    $self->{option_results}->{port} = $self->{port};
+    $self->{option_results}->{proto} = $self->{proto};
+    $self->{option_results}->{timeout} = $self->{timeout};
+    $self->{option_results}->{credentials} = 1;
+    $self->{option_results}->{basic} = 1;
+    $self->{option_results}->{username} = $self->{api_username};
+    $self->{option_results}->{password} = $self->{api_password};
+}
+
+sub settings {
+    my ($self, %options) = @_;
+
+    return if (defined($self->{settings_done}));
+    $self->build_options_for_httplib();
+    $self->{http}->add_header(key => 'Accept', value => 'application/json');
+    $self->{http}->add_header(key => 'Content-Type', value => 'application/json');
+    $self->{http}->set_options(%{$self->{option_results}});
+    $self->{settings_done} = 1;
+}
+
+sub request_api {
+    my ($self, %options) = @_;
+
+=for comment
+    my $tutu = do {
+            local $/ = undef;
+            if (!open my $fh, "<", '/tmp/plop.txt') {
+                $self->{output}->add_option_msg(short_msg => "Could not open file /tmp/plop.txt : $!");
+                $self->{output}->option_exit();
+            }
+            <$fh>;
+    };
+    my $tutu2;
+    eval {
+        $tutu2 = JSON::XS->new->utf8->decode($tutu);
+    };
+    if ($@) {
+        $self->{output}->add_option_msg(short_msg => "cannot decode response (add --debug option to display returned content)");
+        $self->{output}->option_exit();
+    }
+    return $tutu2;
+=cut
+
+    $self->settings();
+    my ($fh, $content);
+    my $lockfile = $self->{lockfile_dir} . '/polycom_trio_' . md5_hex($self->{hostname}) . '.lock'; 
+    if (!sysopen($fh, $lockfile, O_WRONLY | O_CREAT)) {
+        $self->{output}->add_option_msg(short_msg => "cannot open/create lock file '" . $lockfile . "': $!");
+        $self->{output}->option_exit();
+    }
+
+    eval {
+        local $SIG{ALRM} = sub { die 'timeout' };
+
+        alarm($self->{timeout} + 5);
+        flock($fh, LOCK_EX);
+        $content = $self->{http}->request(
+            method => 'GET',
+            url_path => $options{url_path},
+            unknown_status => $self->{unknown_http_status},
+            warning_status => $self->{warning_http_status},
+            critical_status => $self->{critical_http_status},
+        );
+        alarm(0);
+        flock($fh, LOCK_UN);
+    };
+    if ($@) {
+        $self->{output}->add_option_msg(short_msg => 'plugin timeout: ' . $@);
+        $self->{output}->option_exit();
+    }
+
+    if (!defined($content) || $content eq '') {
+        $self->{output}->add_option_msg(short_msg => "API returns empty content [code: '" . $self->{http}->get_code() . "'] [message: '" . $self->{http}->get_message() . "']");
+        $self->{output}->option_exit();
+    }
+
+    my $decoded;
+    eval {
+        $decoded = JSON::XS->new->utf8->decode($content);
+    };
+    if ($@) {
+        $self->{output}->add_option_msg(short_msg => "cannot decode response (add --debug option to display returned content)");
+        $self->{output}->option_exit();
+    }
+
+    return $decoded;
+}
+
+1;
+
+__END__
+
+=head1 NAME
+
+Polycom Trio Rest API
+
+=head1 REST API OPTIONS
+
+=over 8
+
+=item B<--hostname>
+
+Set hostname.
+
+=item B<--port>
+
+Set port (Default: '443').
+
+=item B<--proto>
+
+Specify https if needed (Default: 'https').
+
+=item B<--api-username>
+
+Set username.
+
+=item B<--api-password>
+
+Set password.
+
+=item B<--lockfile-dir>
+
+Specify the lock file directory (Default: '/var/lib/centreon/centplugins').
+
+=item B<--timeout>
+
+Threshold for HTTP timeout (Default: '30').
+
+=back
+
+=cut
diff --git a/hardware/devices/polycom/trio/restapi/mode/callsrt.pm b/hardware/devices/polycom/trio/restapi/mode/callsrt.pm
new file mode 100644
index 000000000..ca8df18e5
--- /dev/null
+++ b/hardware/devices/polycom/trio/restapi/mode/callsrt.pm
@@ -0,0 +1,183 @@
+#
+# Copyright 2020 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package hardware::devices::polycom::trio::restapi::mode::callsrt;
+
+use base qw(centreon::plugins::templates::counter);
+
+use strict;
+use warnings;
+use Digest::MD5 qw(md5_hex);
+
+sub custom_loss_calc {
+    my ($self, %options) = @_;
+
+    $self->{result_values}->{display_absolute} = $options{new_datas}->{$self->{instance} . '_display'};
+    my $diff_pkts = ($options{new_datas}->{$self->{instance} . '_packets'} - $options{old_datas}->{$self->{instance} . '_packets'});
+    my $diff_loss = ($options{new_datas}->{$self->{instance} . '_loss'} - $options{old_datas}->{$self->{instance} . '_loss'});
+
+    $self->{result_values}->{packets_loss} = $diff_loss;
+    $self->{result_values}->{packets_loss_prct} = 0;
+    $self->{result_values}->{packets} = $diff_pkts;
+    if ($diff_pkts > 0) {
+        $self->{result_values}->{packets_loss_prct} = ($diff_loss * 100) / $diff_pkts;
+    }
+
+    return 0;
+}
+
+sub custom_loss_output {
+    my ($self, %options) = @_;
+
+    return sprintf(
+        "packets loss: %.2f%% (%s on %s)",
+        $self->{result_values}->{packets_loss_prct},
+        $self->{result_values}->{packets_loss},
+        $self->{result_values}->{packets}
+    );
+}
+
+sub set_counters {
+    my ($self, %options) = @_;
+
+    $self->{maps_counters_type} = [
+        { name => 'channels', type => 1, cb_prefix_output => 'prefix_channels_output', message_multiple => 'All call channels are ok', skipped_code => { -10 => 1 } }
+    ];
+
+    $self->{maps_counters}->{channels} = [
+        { label => 'channel-traffic-in', nlabel => 'call.channel.traffic.in.bytes', set => {
+                key_values => [ { name => 'traffic_in', diff => 1 }, { name => 'display' } ],
+                per_second => 1, output_change_bytes => 1,
+                output_template => 'traffic in: %s %s/s',
+                perfdatas => [
+                    { value => 'traffic_in_per_second', template => '%d',
+                      unit => 'B/s', min => 0, label_extra_instance => 1  },
+                ],
+            }
+        },
+        { label => 'channel-traffic-out', nlabel => 'call.channel.traffic.out.bytes', set => {
+                key_values => [ { name => 'traffic_out', diff => 1 }, { name => 'display' } ],
+                per_second => 1, output_change_bytes => 1,
+                output_template => 'traffic out: %s %s/s',
+                perfdatas => [
+                    { value => 'traffic_out_per_second', template => '%d',
+                      unit => 'B/s', min => 0, label_extra_instance => 1  },
+                ],
+            }
+        },
+        { label => 'channel-maxjitter', nlabel => 'call.channel.maxjitter.milliseconds', set => {
+                key_values => [ { name => 'max_jitter' }, { name => 'display' } ],
+                output_template => 'max jitter: %s ms',
+                perfdatas => [
+                    { value => 'max_jitter_absolute', template => '%d',
+                      unit => 'ms', min => 0, label_extra_instance => 1 },
+                ],
+            }
+        },
+        { label => 'channel-packetloss', nlabel => 'call.channel.packetloss.count', set => {
+                key_values => [ { name => 'loss', diff => 1 }, { name => 'packets', diff => 1 }, { name => 'display' } ],
+                closure_custom_calc => $self->can('custom_loss_calc'),
+                closure_custom_output => $self->can('custom_loss_output'),
+                threshold_use => 'packets_loss',
+                perfdatas => [
+                    { value => 'packets_loss', template => '%d',
+                      min => 0, label_extra_instance => 1  },
+                ],
+            }
+        },
+        { label => 'channel-packetloss-prct', nlabel => 'call.channel.packetloss.percentage', display_ok => 0, set => {
+                key_values => [ { name => 'loss', diff => 1 }, { name => 'packets', diff => 1 }, { name => 'display' } ],
+                closure_custom_calc => $self->can('custom_loss_calc'),
+                closure_custom_output => $self->can('custom_loss_output'),
+                threshold_use => 'packets_loss_prct',
+                perfdatas => [
+                    { value => 'packets_loss_prct', template => '%.2f',
+                      unit => '%', min => 0, max => 100, label_extra_instance => 1  },
+                ],
+            }
+        },
+    ];
+}
+
+sub prefix_channels_output {
+    my ($self, %options) = @_;
+
+    return "Channel '" . $options{instance_value}->{display} ."' ";
+}
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options, force_new_perfdata => 1, statefile => 1);
+    bless $self, $class;
+
+    $self->{version} = '1.0';
+    $options{options}->add_options(arguments => {
+    });
+
+    return $self;
+}
+
+sub manage_selection {
+    my ($self, %options) = @_;
+
+    $self->{cache_name} = 'polycom_trio_' . $options{custom}->{hostname}  . '_' . $self->{mode} . '_' .
+        (defined($self->{option_results}->{filter_counters}) ? md5_hex($self->{option_results}->{filter_counters}) : md5_hex('all'));
+
+    my $result = $options{custom}->request_api(url_path => '/api/v1/mgmt/media/sessionStats');
+    $self->{channels} = {};
+    if (!defined($result->{data}->[0]->{Streams})) {
+        $self->{output}->output_add(
+            severity => 'OK',
+            short_msg => ' no audio/video call running'
+        );
+        return ;
+    }
+
+    foreach (@{$result->{data}->[0]->{Streams}}) {
+        $self->{channels}->{lc($_->{Category})} = {
+            display => lc($_->{Category}),
+            traffic_in => $_->{OctetsReceived},
+            traffic_out => $_->{OctetsSent},
+            max_jitter => $_->{MaxJitter},
+            loss => $_->{PacketsLost},
+            packets => $_->{PacketsReceived}
+        };
+    }
+}
+
+1;
+
+__END__
+
+=head1 MODE
+
+Check call audio/video channels in real-time.
+
+=over 8
+
+=item B<--warning-*> B<--critical-*>
+
+Thresholds.
+Can be: 'channel-traffic-in', 'channel-traffic-out', 'channel-maxjitter'
+'channel-packetloss', 'channel-packetloss-prct'.
+
+=back
+
+=cut
diff --git a/hardware/devices/polycom/trio/restapi/plugin.pm b/hardware/devices/polycom/trio/restapi/plugin.pm
new file mode 100644
index 000000000..f534e9876
--- /dev/null
+++ b/hardware/devices/polycom/trio/restapi/plugin.pm
@@ -0,0 +1,53 @@
+#
+# Copyright 2020 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package hardware::devices::polycom::trio::restapi::plugin;
+
+use strict;
+use warnings;
+use base qw(centreon::plugins::script_custom);
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
+    bless $self, $class;
+
+    $self->{version} = '1.0';
+    %{$self->{modes}} = (
+        'calls-rt' => 'hardware::devices::polycom::trio::restapi::mode::callsrt',
+    );
+
+    $self->{custom_modes}{api} = 'hardware::devices::polycom::trio::restapi::custom::api';
+    return $self;
+}
+
+1;
+
+__END__
+
+=head1 PLUGIN DESCRIPTION
+
+Check Polycom Trio (8300, 8500, 8800) through HTTP/REST API.
+
+=over 8
+
+=back
+
+=cut