Call origination refers to the point where the call starts, which
takes place over the PSTN telephone network and transferred to their
destination through the internet. It's important to note that a phone call
through VoIP starts between the initiation point and the destination point,
which are referred to as the originator and terminator respectively. There are
typically different types of call origination depending on the services
provided by the ITSP involved. The only way for call origination to work is if
the VoIP originator has a call termination arrangement with a VoIP terminator.
Hardware Requirement
Like most VoIP solutions, hardware expenses for origination are
minimal. For voice origination, a VOIP switch gateway is required, which
transfers calls from the web to the PSTN. The gateway acts as an intermediary
for a telephony interface and network interface, and acts as the connection
point.
How Call Origination Works
Call origination is a fairly simple process that is a bit more
complicated to explain. In essence, the gatekeeper mentioned previously will
receive the calls and requests from the dialer. When a user makes a connection
to the dialer, the gatekeeper will ask a Radius server to check if the user has
input the correct password and username. The Radius server will then answer the
gatekeeper with a yes or a no. If a yes answer is received from the Radius
server, the user the has the ability to make a phone call from the origination
point. Once the number has been placed, the gatekeeper once again receives a
request for the phone call to be made. It is at this point where the gatekeeper
will interact with the Radius server again to see if the user in question has enough
money to make the phone call. The Radius server will then connect to the
billing server to ascertain how much money has been provided by the user for
this specific call, in order to nail down how long the call can last before
being cut off.
How to Bill your Service
The billing server will then take a look at the location at which
the call is originating from in order to measure the current rate of pay, which
all depends on whether the call is being made in off peak or peak hours. Once
this has been determined, the relevant information will then be sent back to
the Radius server. Once the Radius server has received this information, it
will be sent back to the gatekeeper. The user is then provided with the IP
address for the gateway at the destination to which the call is being placed.
This gateway will send the call to the final destination. If no other issue
arises during this time, the call can take place and the two users can talk for
however long the duration of the call is. If the call takes place once the
maximum time allotment has been reached for the call, it will be disconnected
and more money will need to be provided in order to make another call and
continue the conversation. When the call has come to a conclusion, whether by
the callers themselves or because they were disconnected, the initial user will
have the total price of the call deducted from their payment source by the
billing server.
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