There is a possibility to send notification to a pager via the DAPNET-Core. Look here. However, if in case of a failure the DAPNET-Core is not reachable, you may want to send a paging call directly via your unipager.

UNTESTED

Get the python script from https://github.com/dh3wr/UniPager-SendWebsocket. Copy the file unipager_send.py to /usr/local/bin or whereever you want it to be.

Edit commands.cfg and add the following lines:

# 'notify-host-by-pager' command definition
define command{
        command_name    notify-host-by-pager-on-unipager
        command_line    /usr/bin/python /usr/local/bin/unipager_send.py --hostname $USER14$ --password $USER15$ --ric $$ --msg "NAGIOS $NOTIFICATIONTYPE$: $HOSTNAME$ $HOSTSTATE$"
        }

# 'notify-service-by-pager' command definition
define command{
        command_name    notify-service-by-pager-on-unipager
        command_line    /usr/bin/python /usr/local/bin/unipager_send.py --hostname $USER$ --password $USER$ --ric $address2$ --msg "NAGIOS $NOTIFICATIONTYPE$: $HOSTNAME$ $SERVICEDESC$ $SERVICESTATE$"
        }

As you see, there are macros $USER13$ and $USER14$ used. They should contain the hostname of the Unipager and the password, if defined. Define them in the resource.cfg:

$USER13$=unipager.yourdomain.com
$USER14$=VERYSCECRETPASSWORD

Edit contacts.cfg and add the pager subscriber as set in DAPNET and the notification commands:

define contact{
        contact_name                    dh3wr
        alias                           Ralf Wilke
        service_notifications_enabled   1
        host_notifications_enabled      1
        service_notification_period     24x7
        host_notification_period        24x7
        service_notification_options    w,u,c,r
        host_notification_options       d,r
        service_notification_commands   notify-service-by-email,notify-service-by-pager-on-unipager
        host_notification_commands      notify-host-by-email,notify-host-by-pager-on-unipager
        email                           spam@myemail.cl
        pager                           dh3wr
        address1                        dl-nw
        address2                        123456
        }

The address2 entry defines the RIC to send the message to. Remember to add the commands just created.

Either use the template or define at each host and service the contacts you want to notify.

define host{
        name                            generic-host-rwthafu    ; The name of this host template
        notifications_enabled           1       ; Host notifications are enabled
        event_handler_enabled           1       ; Host event handler is enabled
        flap_detection_enabled          1       ; Flap detection is enabled
        failure_prediction_enabled      1       ; Failure prediction is enabled
        process_perf_data               1       ; Process performance data
        retain_status_information       1       ; Retain status information across program restarts
        retain_nonstatus_information    1       ; Retain non-status information across program restarts
        check_command                   check-host-alive
        max_check_attempts              10
        notification_interval           0
        notification_period             24x7
        notification_options            d,u,r
        contacts                        rwthafu,dh3wr
        register                        0       ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL HOST, JUST A TEMPLATE!
        }