Quickstart

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This document details the steps needed to get your x164 switch started.

Contents

Preface

The x164 softswitch is based on yate. The softswitch can be installed on the servers of the x164 customer or is hosted by x164 in the datacenter.

We recommend to install the softswitch as a OpenVZ virtual machine. OpenVZ offers near-bare-metal performance. The advantages of virtualization are easy backups and easy migration to different hardware in case of failures or hardware upgrades. x164 provides a OpenVZ template for download which is a ready-configured softswitch.

Softswitch installation

Setup Linux Host for OpenVZ

Use of Debian Squeeze is recommended for its stability, but you can use other Linux distributions as you wish. You can look for the proper option for your machine here. Installation guides are also available for the different supported architectures here.

This website offers a screenshot based tutorial that explains how to make a bare-bones installation without a graphical desktop environment. We suggest to create a separate partition /vz to store the virtual machines, as for example in the following scheme.

Disk partitioning

Partition Size File system Comments
/boot 500 MB ext2
swap ~ swap Size should be the same as RAM
/ 20 GB ext4
/vz remaining disk space ext4 OpenVZ virtual machines will be installed in this partition


It is encouraged that you follow the order shown in the table.



Updating and upgrading

After installation run the following commands to ensure you have the latest version of the installed packages:

sudo apt-get update
sudo apt-get upgrade


Remote SSH access


If you want to work on your server from a remote client, it is recommended to use a Secure Shell (SSH) protocol. Install a SSH server:

apt-get install openssh-server


Now you can open the terminal on your workstation and type the following to log into the server:

ssh root@[Server's IP Address]


Provide the password and continue working remotely.

Midnight Commander


We recommend using a visual file manager like Midnight Commander (mc) to make working with the command line easier. To install it in your server enter this command:

apt-get install mc
mc


You can find more information about mc in [1]

Webmin installation


It is recommended that you use Webmin to easily configure your softswitch. Run the following command to avoid dependency issues

apt-get install perl libnet-ssleay-perl openssl libauthen-pam-perl libpam-runtime libio-pty-perl apt-show-versions python


Then you can download Webmin

wget http://prdownloads.sourceforge.net/webadmin/webmin_1.590_all.deb


and install it

dpkg --install webmin_1.590_all.deb


OpenVZ Installation


Installation for Debian systems is detailed in this tutorial. You can also refer to the OpenVZ installation guide for Debian and other operating systems.

Softswitch template installation


To download the softswitch template just run the following command:

wget http://www.x164.com/index.php/download-and-install


and create the softswitch container.

vzctl create [CTID] --ostemplate nameOfTemplate 


Once you have created a new [CTID].conf file will appear at /etc/vz/conf. There you can set the VM's IP, gateway and hostname as it fits your network, among other parameters. This is an example of what the .conf file should look like:

IDConf.png


Then you can start your softswitch container:

vzctl start [CTID]


Here you can look up some of the basic operations needed to work with your container.

Setup softswitch to connect with x164


The softswitch needs to connect to the x164 database to retrieve routing information and to the x164 radius server to send call details records. We will initiate fake calls from a softphone to test whether everything works correctly.

Editing register.conf file


To access the x164 database in realtime from your softswitch you must need a secret key that we issue to you. To find your key, log into https://access.x164.com. Go to the Rating tab and select Gateways in the Action area.

GatewaySecretKey.png


You need to enter the key into the call routines in the softswitch. Go into the /usr/local/etc/yate folder of your installation and open the register.conf file. In this file the string 'hyTnw94^^f' must be substituted by your own secret key for MySQL procedures in yate.

Yate-registerFileEditing.png


Setup Firewall on Softswitch

The firewall can be setup comfortably with Webmin:

https://softswitchIP:10000


In the Networking/Linux Firewall subsection, Default Action should be set to Drop. Then a new rule must by added by clicking Add Rule. This new rule must be defined like this

AddRuleLinuxFirewallMenu.png


where 11.22.33.55 is the IP of your workstation. The firewall must be opened for all IPs from which you receive VoIP traffic. Now the Linux Firewall menu should look like this:

LinuxFirewallMenu.png


Press the Apply button to activate the rules.

Verify yate functionality


You can verify that yate is working in principle. Go to the terminal and log into the softswitch through port 29. Using a port which is not the standard ssh port 22 reduces the chance that some weak password is hacked.

ssh root@[softswitchIP]:29


Then see what is happening on the port that will receive the fake call. The softswitch listens on udp port 5061 and not the standard port 5060.

usr/local/etc/yate ngrep port 5061


Now you can attempt a call from a softphone Zoiper

FakeCall.png


After dialing you should see SIP messages going back and forth between the soft phone and yate. As no subscriber is setup in the system the call will of course fail.

Connection to Radius server


Login into https://access.x164.com and click search in the CDRs tab. The test calls your did should be shown, confirming that the softswitch is connected to the x164 radius server.

CDRsExample1.png


Web Configuration of the x164 Service


To get the x164 system started, you must create some new subscribers and set up a block of DID numbers. Once you have done this you can make a test call to verify the system is working properly.
All the tables you have to use in the following section are listed in the 'Rating' tab of the web application, in the 'Actions' menu.

Adding subscribers


In this step you will create at least two dynamic or fixed IP subscribers and set a profile and a rate for both of them, so you can later make a test call from one to another. In the following tables the bold fields must be set, the remaining fields may stay empty.

Adding a dynamic IP customer


Adding a dynamic IP customer implies setting a password for authentication:

Reseller (Automatically generated Id)
Dynamic_ip 1 (Flag for dynamic IP use)
Subscriber user1@domain.com (Subscriber name)
Password verysecret (User password)
Profile PROFCLIENT (Profile name. Links the customer to a profile in the 'Profiles' table)
Blocked 0 (Block subscriber flag)
Pre_location sip/sip: (Protocol used. Will be added before the called number. Write in lowercase)
Post_location (Automatically updated IP address after SIP client registers to softswitch)
Expires (Automatically updated when dynamic IP expires)
Formats (Optional codec formats separated by comma, g729, ulaw, ...)


Adding a fixed IP customer


For fixed IP customers authentication is based on their IP address, so there is no need to provide a password. Also it's necessary to provide the post location field so their calls can be routed by the x164 system.

Reseller (Automatically generated Id)
Trusted Peer 11.22.33.44 (Authorized IP address)
Dynamic_ip 0 (Flag for dynamic IP use)
Subscriber user1@domain.com (Subscriber name)
Profile PROFCLIENT (Profile name. Links the customer to a profile in the 'Profiles' table)
Subscriber_out (In case subscriber provides also termination his carrier name must be set to avoid looping calls)
Blocked 0 (Blocked subscriber flag)
Pre_location sip/sip: (Protocol used. Will be added before the called number. Write in lowercase)
Post_location @11.22.33.44 (Customer's IP address)
Formats (Optional codec formats separated by comma, g729, ulaw, ...)


Linking customer to a profile


Next step is adding a profile, which is used by the system to calculate the price of calls. Profiles and customers are linked by the 'Profile' field. Select 'Profiles' in the 'Action' area and add a new one:

Reseller (Automatically generated Id)
Profile PROFCLIENT (Profile name. Links the customers in the 'Customer' table)
Rate PROFCLIENT (Link to profile's rates in the 'Rates' table)
Starthourweek 0 (Start hour in the week of this tariff)
Endhourweek 167 (End hour in the week of this tariff)
Penalty (Optional price added to this tariff)
Timezone GMT (Timezone, reflects the local time of the tariff)
Incr 1 (Used to consider the duration of the call in increments)
Min_Dur 1 (Minimum duration of the call)
Curr_code EUR (Currency used in iso format)
Carrier IN (Role of the subscriber, in this case the caller)


Linking rates to profiles


The final step of creating a subscriber is adding a rate. Rates include information used to calculate the price of a call and can be linked to several profiles by the 'Rate' field. Go to 'Rates' in the 'Action' area and make a new entry:

Reseller (automatically generated Id)
Rate PROFCLIENT (Link to profile in the 'Profiles' table)
Destination 34123 (Destination number to this rate)
Region (Optional region of this number)
Description (Optional description of the destination)
App audio (Application type)
Conn (Optional, price of the call connection)
Price 1 (Price per minute)
Conn In (Optional, cost of the call setup)
Price In (Optional, cost per minute)
Start Date 2008-01-01 (Start time of the rate)
End Date 2022-01-01 (End time of the rate)
Blocked 0 (Blocked rate flag)
Billtime_sum 3000 (Automatically updated billed time of this rate)
Ringtime_sum 0 (Automatically updated ring time)
Setuptime_sum 0 (Automatically updated setup time)
Calls_count 10 (Automatically updated number of calls)
Success_count 10 (Automatically updated number of connected calls)
Acd_short 300 (Automatically updated short-term average call duration)
Acd_avr 300 (Automatically updated long-term average call duration)


Adding DID subscribers


Now that you have created some customers you can make one of them a DID subscriber. In order to do this first you have to create a DID profile and set up a block of DID numbers. In this case we are going to define the block as '34123xxxxxx' and link the number '34123456112' to the subscriber 'user2@domain.com'.

Adding a DID profile


Make a new entry in the 'Profiles' table. The difference between a DID and a regular profile is in the 'Carrier' field, which in this case must be 'DIDRANGE'. 'DIDRANGE' tells the softswitch to route incoming calls to numbers within the DID number blocks only to subscribers:

Reseller (Automatically generated Id)
Profile DID_OURS (Profile name. Links the customers in the 'Customer' table)
Rate DID_OURS (Link to profile's rates in the 'Rates' table)
Starthourweek 0 (Start hour in the week of this tariff)
Endhourweek 167 (End hour in the week of this tariff)
Penalty (Optional price added to this tariff)
Timezone GMT (Timezone, reflects the local time of the tariff)
Incr 1 (Used to consider the duration of the call in increments)
Min_Dur 1 (Minimum duration of the call)
Curr_code EUR (Currency used in iso format)
Carrier DIDRANGE (Role of the subscriber, in this case the caller)


Setting up a block of DID numbers in Rates table


Add a rate in the 'Rates' table. This must be linked to the DID profile you have created, so you can specify the range of your DID numbers in the 'Destination' field.

Reseller (automatically generated Id)
Rate DID_OURS (Link to profile in the 'Profiles' table)
Destination 34123 (Destination number to this rate. In this case this is the range of own numbers)
Region (Optional region of this number)
Description (Optional description of the destination)
App audio (Application type)
Conn (Optional, price of the call connection)
Price 0 (Price per minute)
Conn In (Optional, cost of the call setup)
Price In (Optional, cost per minute)
Start Date 2008-01-01 (Start time of the rate)
End Date 2022-01-01 (End time of the rate)
Blocked 0 (Blocked rate flag)
Billtime_sum 3000 (Automatically updated billed time of this rate)
Ringtime_sum 0 (Automatically updated ring time)
Setuptime_sum 0 (Automatically updated setup time)
Calls_count 10 (Automatically updated number of calls)
Success_count 10 (Automatically updated number of connected calls)
Acd_short 300 (Automatically updated short-term average call duration)
Acd_avr 300 (Automatically updated long-term average call duration)


Linking a DID to a client


You must now link one of the numbers included in your DID range to one of your customers. To do so, go to the 'DIDclients' table in the 'Rating' tab and make an entry:

Reseller (Automatically generated Id of reseller)
DID_number 34123456112 (Number of the client)
DID_subscriber user2@domain.com (Subscriber who owns number)


Make a test call


Now that the subscribers and DID clients are included in the database, you can make a call from one customer to another. Just make sure both are registered to the x164 system through a softphone or an analog phone with an ATA. In the following image you can see an example of account configuration for registering with Zoiper:

ZoiperConf.png


Setting up carriers


Next you can add a carrier and send it calls. First you have to make a carrier record in the 'Carriers' table. Then you have to link it to a profile and a rate. Finally you can make a test call from a previously defined customer to one of the carrier's numbers.

Adding a carrier


Go to the 'Carriers' table. Enter the carrier's name, its location and a new profile.

Reseller (Automatically generated ID)
Carrier_name carrier.com or 22.33.44.55 (Carrier's name used as billing party in the rate process)
Profile PROFCARRIER (Profile name. Links the carrier to a profile)
Blocked 0 (Blocked carrier flag)'
Pre_location sip/sip: (Protocol used. Will be added before the called number. Write in lowercase)
Post_location @carrier.com or 22.33.44.55 (Carrier's URL or IP)
Line (Optional section identifier from accfile.conf, this can be used instead of pre-location + post-location)
Formats (Optional codec formats separated by comma, g729, ulaw...)


Linking the carrier to a profile


Add a carrier profile to the 'Profiles' table:

Reseller (Automatically generated Id)
Profile PROFCARRIER (Profile name. Links the carrier in the 'Carriers' table)
Rate PROFCARRIER (Link to profile's rates in the 'Rates' table)
Starthourweek 0 (Start hour in the week of this tariff)
Endhourweek 167 (End hour in the week of this tariff)
Penalty (Optional price added to this tariff)
Timezone GMT (Timezone, reflects the local time of the tariff)
Incr 1 (Used to consider the duration of the call in increments)
Min_Dur 1 (Minimum duration of the call)
Curr_code EUR (Currency used in iso format)
Carrier CARRIER (Role of the subscriber, in this case a carrier)


Linking the profile to a rate


Finally go to 'Rates' and make an entry defining the range of numbers that have to be sent to this carrier. In this case we arbitrarily chose the range '341234561xx'.

Reseller (automatically generated Id)
Rate PROFCARRIER (Link to profile in the 'Profiles' table)
Destination 341234561xx (Destination numbers to this rate)
Region (Optional region of this number)
Description (Optional description of the destination)
App audio (Application type)
Conn (Optional, price of the call connection)
Price 1 (Price per minute)
Conn In (Optional, cost of the call setup)
Price In (Optional, cost per minute)
Start Date 2008-01-01 (Start time of the rate)
End Date 2022-01-01 (End time of the rate)
Blocked 0 (Blocked rate flag)
Billtime_sum 3000 (Automatically updated billed time of this rate)
Ringtime_sum 3000 (Automatically updated ring time)
Setuptime_sum 3000 (Automatically updated setup time)
Calls_count 10 (Automatically updated number of calls)
Success_count 10 (Automatically updated number of connected calls)
Acd_short 300 (Automatically updated short-term average call duration)
Acd_avr 300 (Automatically updated long-term average call duration)


Make a test call to the carrier


To ensure everything has been set up properly, you can make a call from one of your customers to a carrier's number and verify the call is properly sent.

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