System information

Each simcards can have it’s own GSM engine (in other gsm gateway the engines are used by more simcards)
GSM Cell Lock
Because Mizu GSM Gateways use only 8 channels, they don’t overuse the gsm network. However, you can setup individual GSM channels to use separate
cells
Virtual Simcards
With the ease of Mizu simbank, your simcards can be stored in a central location, and used in gsm gateways installed at different locations.
Delayed network registration
A delay time can be configured to elapse between succesive engine (re)registrations.
Intelligent routing
Ballancing the traffic across your simcard based on price and quality
Handling of incoming calls
In usual GSM gateways there are no simple mechanisms to handle incoming calls from the gsm network. In a Mizu system all calls can be forwarded to
your support team, so each call can be responded accordingly.
No GSM network owerload
Mizu GSM gateways occupy only 8 channels
Fast detection of dead channels
Failovering from simcards blocked by the operator or with wrong quality
Automatic blacklist generation
Wrong numbers will be detected and blocked on the server (not forwarded to the gsm network)
Minute limits
Each simcard can have different daily, monthly and other limits
Time between subsequent calls
Calls will not be forwarded to gsm gateway without a delay between (configurable)
SIM Bank
Simcards can be managed on a central location, and they will “fly” between gateways
Many other tricks
Ask the Mizu support for more details
4.8.8. How to setup a gateway behind a NAT
For the basic gateway the followin port forward must be applied on your NAT box:
-TCP: 1721 (h323 signaling)
-TCP: 3386 (remote desktop)
-UDP: 44444 (“voice-here”)
-at least 16 UDP port for RTP (setup the minrtpport and maxrtpport settings accordingly in the voipgsmgw.ini)
(RTP media may work without the port forwarding set explicitly. This depends on caller party)
-TCP: 21 (optional for ftp access)