A GSM Gateway is basically a mobile phone appliance that can be attached to a PABX phone system enabling calls to be made from your Phone System using a mobile network. If you then put an unlimited or Capped Call Plan SIM card into the GSM gateway and also programming the PABX to direct outbound calls via the Gateway a lot of money can be saved. Anyone can from their landline phone bill see that calls made to a mobile numbers are the most expensive. Many calls are in fact made to mobile numbers and it is easy to end up with a big telephone bill in the end of the month. You will also know that when it comes to calling out to a mobile phone, many mobile carriers have much better deals than the fixed wire carriers.
You need to have a programmable PABX phone system with at least one free analogue port. Also required is an active SIM card on the mobile phone plan you want. A PABX maintainer is then able to install the Gateway for you and program your PABX system so that you can choose which lines will route via the GSM Gateway.
In most cases, using a GSM Gateway for PABX Phone Systems will be cheaper than VoIP unless you need to make a lot of International calls. The true benefits of using a GSM gateway is how easy and straightforward it is to use. After it has been installed and programmed there are no further ongoing support charges to pay and no problems over the quality of the calls or any technical support needed. Adding a GSM gateway is equivalent to connecting your mobile phone and leaving it to one side to use at any time. You will be able to find units from $500 Aus installed for a Single SIM device and for a 4 Channel Device, prices will start around $1800.Units are available in increments of 1, 2, 4, 8, 12, 16, 20, 24, 28 up to 32 Channel (32 SIM cards) that can be attached to Primary Rate ISDN 10/20/30 PABX Systems.
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