Mobile Number Portability Addon

Mobile number portability (MNP) enables mobile telephone users to retain their mobile telephone numbers when changing from one mobile network operator to another.

MNP Addon for MOR allows system owner to check number if it belongs to other network and if so - route it through different providers or bill it with different price.

Current implementation allows to save numbers in MySQL database on any server (possible not necessarily on local server).

Before each call MOR MNP Addon checks dialed number and if number is found in database - some prefix is added in front of it.

By prefix MOR can set different routing(LCR) or billing(Tariff) for this number. Localization rules should be used to perform these actions.

Detailed technique is described here: LCR/Tariff change based on call prefix

As Kolmisoft cannot make one unique database for all MNP services in all countries all over the world. MOR admin has to

manually enter numbers in MNP database (process described below) in order for this solution to work. mor_mnp database has

to contain only the necessary data (telephone numbers).

Installation

Do such steps:

1. Update MOR scripts:

rm -fr /usr/src/mor
svn co http://svn.kolmisoft.com/mor/install_script/trunk/ /usr/src/mor

2. Run MNP installation script:

/usr/src/mor/sh_scripts/install_mnp.sh

3. Depending on MOR version:

MOR X16 (or older)

Run script which will update Asterisk extlines to work with MNP database:

/usr/src/mor/test/scripts/asterisk/mnp_cfgs.sh

MOR X17 (or later)

Starting from MOR X17, enable MNP in /etc/asterisk/mor.conf

mnp_enabled = 1
asterisk -rx "mor reload"

How to see if MNP works

Open Asterisk CLI. During the call check the very first lines shown in CLI. In about the 10th line you should be able to see lines like that:

MOR X16 (or older)

    -- Launched AGI Script /var/lib/asterisk/agi-bin/mor_mnp
mor_mnp: 
mor_mnp: MOR MNP AGI script started.
mor_mnp: Successfully connected to the database.
mor_mnp: Extension: 37012312345
mor_mnp: New extension: 37012312345
mor_mnp: MOR MNP AGI script stopped.
mor_mnp: 

MOR X17 (or later)

In call log, the following line should be visible:

[2023-01-17 15:32:03] NOTICE[10659][C-00000007]: app_mor_various.c:4088 _mor_log: Checking number 37012312345 in MNP database

Also, check the output of asterisk -rx "mor show status", you should see MNP status:

MNP enabled: 1, MNP active: 1

MNP enabled - shows if MOR core is aware of MNP existence.
MNP active - shows if MOR core successfully connected to MNP database.

If you cannot see it. Something is wrong with the configuration.

Upgrade/Update

After MOR Upgrade or Update run /usr/src/mor/test/scripts/asterisk/mnp_cfgs.sh

Database

Config to DB in: /usr/local/mor/mor_mnp.conf

It should be MySQL database mor_mnp:

DROP TABLE IF EXISTS `numbers`;
CREATE TABLE `numbers` (
 `number` varchar(50) NOT NULL,
 `prefix` varchar(20) NOT NULL,
 PRIMARY KEY  (`number`),
 UNIQUE KEY `number` (`number`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

Make sure you have set correct MySQL permissions for mor_mnp database and also local or remote asterisk must have correct settings in /usr/local/mor/mor_mnp.conf . If your number is still not recognized, double check if you have it in your mor_mnp database!

An example how to set MySQL permissions:

GRANT REPLICATION SLAVE , REPLICATION CLIENT ON * . * TO 'mor'@'localhost' IDENTIFIED BY 'mor' WITH MAX_QUERIES_PER_HOUR 0
MAX_CONNECTIONS_PER_HOUR 0 MAX_UPDATES_PER_HOUR 0 MAX_USER_CONNECTIONS 0 ;

GRANT ALL PRIVILEGES ON `mor_mnp` . * TO 'mor'@'localhost' WITH GRANT OPTION ;

How to use MNP

You need to insert two values in mor_mnp database. These values are number and prefix.

To manage mor_mnp database you can use PhpMyAdmin:

http://<your server IP>/mordbadmin

PhpMyAdmin login details can be found in file /root/phpMyAdminPassword

If after loging in to PhpMyAdmin, MySQL login page will appear, use these details to login to MySQL:

username: mor

password: mor

Now click "_mnp (1)" menu item on the left to select mor_mnp database.

"numbers" menu item will appear after that.

Click on "numbers" menu item to manage number table.

Now click on "Insert" tab at the top of page.

Fields number and prefix will appear.

Enter desired values and click "Go" to insert these values.

Done!

Number localization

In situations when a number can be dialed in multiple ways you can set mnp_prefixes variable in /usr/local/mor/mor_mnp.conf.

For example, if number 123456789 can be dialed with the following prefixes 00370123456789, 370123456789, 8123456789 then you can set mnp_prefixes variable with the following prefixes:

mnp_prefixes = 00370,370,8

then you will be able to upload only a single number 123456789 into the MNP database and this number will be matched when the client dials 00370123456789, 370123456789 or 8123456789.

MNP tags in SIP INVITE

MNP tags (npdi and rn) can be enabled by setting Enable MNP tags to yes in Provider configuration.

If MNP tags are enabled and MNP lookup was successful, then npdi and rn tags will be added to SIP INVITE:

INVITE sip:DST_NUMBER;npdi;rn=MNP_NUMBER@IP SIP/2.0

here:

• DST_NUMBER - localized destination number, for example, +370123456789
• MNP_NUMBER - localized destination number with MNP prefix, for example +370999123456789

If the number is not found in the MNP database, then only npdi tag will be added to SIP INVITE:

INVITE sip:DST_NUMBER;npdi@IP SIP/2.0

here:

• DST_NUMBER - localized destination number, for example, +370123456

Note that only SIP INVITE requests will be modified. Other SIP headers (such as TO, FROM) are not affected by Enable MNP tags setting.

How to import numbers from CSV

There is no such option to import numbers from CSV in MOR GUI, but numbers can be imported directly to the MNP database.

This procedure is described here:

1. You need to have a CSV file on your server and the file should look like this:

...
37012312345;9991
37012312344;9991
37112312343;9992
37112354321;9992
...

2. Open MySQL CLI:

mysql mor_mnp

3. Create a temporary table and import a CSV file to it:

CREATE TABLE temp (col_1 VARCHAR(50) default NULL , col_2 VARCHAR(20) default NULL);

LOAD DATA LOCAL INFILE '/home/mnpnumbers.csv' IGNORE INTO TABLE temp FIELDS TERMINATED BY ';' ;

4. Copy data from the temporary table to 'numbers' table:

INSERT INTO numbers (number,prefix) SELECT TRIM(REPLACE(col_1, '\r', '')), TRIM(REPLACE(col_2, '\r', '')) FROM temp 
 WHERE ( TRIM(REPLACE(col_1, '\r', '')) REGEXP '^[0-9]+$' = 1) and (TRIM(REPLACE(col_2, '\r', '')) REGEXP '^[0-9]+$' = 1) ;

NOTE: This query skips values that contain non-numerical characters.

For example row

...
+370123123456;9997
...

will not be imported to 'numbers' table.

5. Detele temporary table:

DROP TABLE temp;

Done. Numbers are imported to 'numbers' table.

Automatic import script

Script downloads compressed (ZIP) CSV with a list of numbers from the SFTP server and imports in with default prefix to the MNP database. Current ZIP file required. Only SFTP is supported. The script does not import prefixes from CSV. CSV should contain an only list of numbers.

The script is located in /usr/src/mor/sh_scripts/mnp_numbers_import.sh

Script uses same configuration file /usr/local/mor/mor_mnp.conf . Options which are specific to this script:

download_url = sftp.server.com:/path/to/file.zip  #some remote location of a number file (for sftp)
username = ftpuser                                #user name to connect to a remote server
password = ftppassword                            #password for a user to connect to a remote server
default_prefix = 0009                             #default prefix for numbers (current version does not support prefix import)

Note:
If you are using MOR X18 version on Rocky Linux 9 and FTP server on older operating system then these errors can occur using the script:

Unable to negotiate with xxx.xxx.xxx.xxx port 22: no matching host key type found. Their offer: ssh-rsa,ssh-dss

ssh_dispatch_run_fatal: Connection to xxx.xxx.xxx.xxx port 22: error in libcrypto

The best way is to upgrade the FTP server to a new operating system. If you do not want to upgrade your FTP server, then you can use another option to run this command on the MOR Rocky Linux 9 server:

update-crypto-policies --set DEFAULT:SHA1

How to configure external MNP database

Skip this step if your MOR billing installation is on one server.

Locate mor_mnp.conf file

cd /usr/local/mor

Edit the file with your favorite text editor, for example:

mcedit mor_mnp.conf

You should see similar values, mind the gaps in the file, they should be exactly the same as in the example below:

host = localhost
db = mor_mnp
user = mor
secret = mor
port = 3306
server_id = 1
show_sql = 0
debug = 1
mnp_prefixes = 00370,370,8

Change the values to the ones you need:

host - your database IP address
server_id - your Asterisk server id, same as in /etc/asterisk/mor.conf

How can I add a specific prefix on a call to the ported number?

It's possible to add a specific prefix on the call in this way:

• Create a duplicated provider (for example, you have "Provider A (no MNP) and "Provider A (with MNP)")
• Create Provider Rules for that provider by adding a prefix 060
• MOR will route numbers in the MNP database through that provider according to the Provider Rules.

See also

• MOR Addons
• Impact of MNP in VOIP and LCR environments