[asterisk-biz] Mobile Termination via GSM Gateways

[Douglas Garstang]

I was reading that if you want to terminate to cell phones, that sending
the calls through a GSM (or whatever technology is locally available)
gateway, is cheaper than sending the calls to the PSTN via T1/E1,
Analog.

 

How is that?

 

I'm not sure how these devices work anyway.

Does the gateway appear as a regular cell phone to the mobile network? 

Would you just purchase an unlimited plan from the cell phone provider?
Is that how it works out cheaper? 

I also see specs saying that the devices support a certain number of SIM
cards. Why do you need SIM cards? Does each port on the gateway appear
as a separate mobile phone?

Would that mean if your gateway supported 8 ports, you'd need to
purchase 8 unlimited mobile phone plans?

 

Do ITSP's generally terminate calls to cell phone networks via GSM
gateways or T1/Analog gateways? If they terminated calls via GSM
gateways, the calls should be pretty cheap, but I see that ITSP's
published rates to cell phones are always a lot more expensive anyway.

 

Doug.

 

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