Call termination or VoIP
termination is a beneficial business for converting VoIP signal into GSM. This
is done by means of VoIP-GSM gateway with SIM box and customer traffic. A SIM
box (also called a SIM bank) is device used as part of a VoIP gateway
installation. It contains a number of SIM cards, which are linked to the
gateway but housed and stored separately from it. A SIM box can have SIM cards
of different mobile operators installed, permitting it to operate with several
GSM gateways located in different places.
Usage
The SIM box operator can
route international calls through the VoIP connection and connect the call as
local traffic, allowing the box's operator to bypass international rates and
often undercut prices charged by local mobile network operators.
Benefits of VoIP - GSM
Gateways
Enhanced Network
Connectivity for an Existing System
A VoIP-GSM gateway sits
in-line between the existing PBX/IP-PBX and offers connectivity to GSM and IP
network. This allows the users behind the PBX/IP-PBX to directly place calls
over GSM and IP networks using their regular telephone handsets.
The gateways enhance
existing system connectivity, allowing a call to be routed via the cheapest
possible network route. Several routing algorithms are pre-fed into the gateway
devices to select between available networks before placing the call. The
direct network connectivity offers significant cost savings, with the
convenience of using existing telephony devices and retaining habitual dialing
methods. The IP network connectivity facilitates VoIP telephony for
long-distance calling. Several mobile SIMs can be placed within the gateway to
take advantage of varied operator plans as per location or time of call.
Simplified Multi-Site
Connectivity
With continuous expansion
of business horizons across geography, organizations tend to have more and more
regional offices. A VoIP gateway facilitates easy and low cost communication
between these geographically distant branch offices over cost-effective IP
network. This would eliminate long distance call charges between these
locations as the calls would now be carried over the Internet at much lower
call rates. It thereby eliminates the enormous communication cost incurred
while placing long distance calls between branch-offices; over PSTN network or
ISDN lines.
Virtual Trunking
With VoIP gateways
installed at various office locations, users of one branch-office can virtually
access trunk connectivity of the other branch office. The VoIP gateway routes a
call over costeffective IP network till the last mile of termination and
facilitates users at one location to access the local GSM network of a remote
branch-office and thus eliminates heavy inter-network toll charges, relaying
calls over IP till the last possible mile of termination.
Lower TCO
Demanding a much lower
capital expenditure, the gateways extend network connectivity of existing
telephony system. This preserves the value investment already made and offers
the flexibility accessing new networks and features. Also a VoIP gateway brings
inherent benefits of IP technology, allowing the resources of PBX/IP-PBX at one
location to be virtually accessed over IP from a remote location. For instance,
digital leased lines are expensive and also lack connectivity in remote
locations. A VoIP gateway can extend the digital network connectivity and ISDN
DDI services from one location to other remote locations via the IP network. This
makes the gateway a perfect solution for the locations, where either leasing
T1/E1 PRI connectivity is a costly affair or availability of fixed network is
intricate.
Reduced OPEX
With the new networks-GSM
and IP being integrated into a limited connectivity system, every call being
placed from the system can now choose to travel via the direct and more
cost-effective path. For instance a call made to a GSM number can be routed via
the GSM SIM card in the gateway while a long-distance call can be routed over
the IP network. The gateways can automatically take such decisions, relieving
the users from remembering complex dialing patterns. These algorithms are
variedly termed as least cost logics or automatic route selection schemes.
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