Is there a SIP-GSM gateway for Android?

Question

Android

There are several idle Android phones, as well as Asterisk IP PBX and reliable WiFi. Can these phones be used to make calls from station subscribers to phones of mobile operators (GSM). Simply organizing a SIP-GSM gateway. We do not consider the installation of ready-made SIP-GSM gateways (Goip, OpenVox, etc.).

Answer 1

I will support the author of the question, recently I was also puzzled by the search for such software, and did not find anything for the android platform, nevertheless I am absolutely sure that it is a useful and popular software. VoIP is being used by more and more people, and I'm sure the number of "builders" of home VoIP systems has grown, to which I count myself. I had a need to send incoming landline calls to the cloud PBX purely receiving incoming calls, with PSTN FXO everything just bought a "box" from Dlink DVG7111S and there is happiness, it would seem that GSM is the same, but it wasn’t there, at first I looked for "boxes "Dlink type, it turned out to be in a similar budget, mainly FXS wired phone adapters with a GSM channel, theoretically I think you can connect Dlink to an FXS port. Cons I'm not sure about the result, buying another "box", reminds me of a solution through w..
Other "boxes" are too multi-channel 4, 8, 16 and the price tag is tens of tr. and many are a box for connecting USB GSM modems, for example, I have a modem, but even in a professional solution from scratch and more modems, it is no longer possible to purchase.
About the GSM modem, I’ll say there is a working solution with the help of Oktel’s program, I myself made sure it works great, but only under Windows, it means either to drive a PC 24x7x365, someone will say buy a nettop answer in the word buy .... for the sake of one number, a whole nettop is doubtful.
And then the thought came, because of which I found this thread with a question. Namely, in any old smart that is not used for its intended purpose, I think many already have such goodness. Smart for android has all the hardware necessary to implement the functionality of the GSM - VoIP gateway. GSM module for receiving (sending) calls from network to network, WiFi for connecting to the "fat" home Internet, a processor no worse than in different "boxes" that will completely master such a task, and even more battery on board in case of a short-term power failure, I can not find the main application with such functions.

Answer 2

If your Android phones will act as SIP clients, then you can: look towards Asterisk + dongle. I am currently implementing a similar solution.

Answer 3

If your IP PBX Asterisk can call mobile operators, then yes. Otherwise, your question is simply meaningless. Phones will act as clients of the voip network via sip. In android this is a standard feature.

Answer 4

Good afternoon!
I join the question, unfortunately the search returned no results.

Answer 5

Here is a good article about this www.ictinnovations.com/using-android-phone-as-gsm-... , who are too lazy to read, the problem is in the closed libraries for working with iron.

Answer 6

www.ozeki.hu/android-smpp