Setup MV-370 GSM Gateway with Asterisk

The GSM gateway MV-370 is manufactured by http://www.portech.com.tw/.

It's main interest in comparison with other gateways is that it is GSM to SIP (not FXS), so voice quality is very good.
Another point of interest is the price
With that gateway properly configured, you are able to receive calls from GSM to Asterisk (including DISA) and to give calls from Asterisk to GSM network.
Here the configuration for MV-370 device is discussed. Below, some interesting information about the routing features achieved by the MV-372 device, which manage 2 SIMs.

Usage

A typical usage of such a gateway is to be able to give a call with your normal mobile to any destination at voip cost :
Your mobile<----gsm network----> MV-370<--lan--> Asterisk<--internet--> VOIP provider<--magic--> landline

To do such a call, you just call your MV-370 number (it has its own simcard), then you get an invitation tone, then you dial the number which is handled by Asterisk.
If you have some special deals with your mobile operator, like free special number, you can call your MV-370 for free.
You can then call all around the world from your mobile at voip cost :-)

MV-370 Configuration

The first thing to do with the MV-370 is to flash the latest firmware.
Any firmware dated before 2006/09/26 is totally unstable, making the box very difficult to parameter and to work with.
Once you've configured everything in the box, one good advice is to unplug the power and to restart it.
By this way you sould have all the parameters taken into account.

To have the MV-370 to work with Asterisk, you need first to configure the box.
Here are some screen shots showing all the important parameters.
You have to note that in all the configuration process, the MV-370 is considered as extension '103' of the IPBX.
In Bold are the parameters depending on your installation




Here the '#' is important to avoid the two stage dialing when you give a call from Asterisk to GSM.


The mobile number you give in that page are the authorised mobile which can call GSM to Asterisk.
These mobile number must be defined as your GSM provider displays the number. ...