VoxiPlus
Advanced
INSTALLATION MANUAL
© 2008 TOPEX S.A.
page
10
Advantages
¾
Reducing phone calls cost
Once your TOPEX equipment has been connected to your VoIP PBX, all calls going out to a
mobile network are made directly.
This saves your fixed – mobile network call costs. The mobile telephone calls from your
personnel in the field are cheaper too.
You are advised to use the most advantageous tariff of your mobile provider for your GSM
gateway, since all gateway user call accounts are added up for billing purposes.
If you use a call answering machine as a GSM network service, you pay for your voice
message deliveries as a rule. However, if you connect your answering machine to the GSM gateway,
you pay nothing for your voice message deliveries.
You can bar (forbid) selected numbers or groups of numbers in your gateway. You shall pay
nothing for the calls you have barred.
TOPEX VoxiPLUS keeps detailed records on all calls. This helps you find out easily why your
bill is higher than it should be.
The Least Cost Router is flexible enough to help you set rules for GSM calling at the lowest
possible operation costs.
¾
Routing calls
Routing is the process of selecting paths in a network along which to send data or physical
traffic. Routing is performed for many kinds of networks, including the telephone network, the Internet,
and transport networks.
Routing means a process of retrieving a route from the calling party to the called one. There
are various routing methods according to the type of call and place from which the call is coming.
The routing process usually directs forwarding on the basis of routing tables which maintain a
record of the routes to various network destinations.
Speaking of routing within a single VoIP network, we think of the activity executed by the PBX
whenever a registered user initiates a new call.
The result of this process is a route to another registered user based on the called number
analysis. The called number can be an IP telephone, GSM gateway, PSTN gateway, another IP PBX,
etc.
Figure 2 – VoIP Call routing to IP or Mobile
The routing options are dependent on the capabilities of the particular PBX. For SIP-based
telephones, a SIP proxy server can be used as a PBX.
