How to make a GSM gateway from an Android smartphone?

Question

Android

For example, I decided to go somewhere. I take it, put my smartphone on charge at home and went. Calls are received on this smartphone and go to Asterisk, for example. How can this be done?

Answer 1

(I thought about it and found another solution, you can connect the jack output to the input, and then in theory you can. You only need to switch the mode to the conversational speaker after picking up the handset and then write the sound to the usual one, and that one should go into the microphone, which is reserved for the call and the sound from The spoken speaker seems to be possible to record programmatically) Purely programmatically is not possible due to the fact that it is not possible to programmatically transfer sound into a call. But for example, if you live in Russia, then you can use the Zadarma service, just set forwarding to their number and when people call, they will be asked to enter your account number (it seems 6 digits).
You will have a limit of 400 min.
For Ukraine connection $4 monthly fee $5/month

Answer 2

Megaphone multiphone to help you. Calls can be routed to gsm and sip at the same time.

Answer 3

The probability that you will find software is 0, so no way.
You can only enable call forwarding to some external number that is already in the master.

Answer 4

Is there a GSM-SIP gateway for Android?
Is there a SIP-GSM gateway for Android?

Answer 5

It is easier and more reliable, and most importantly - inexpensive, to fasten a usb modem (about 1000r) to the asterisk using chan_dongle. Checked, it works.
Or, as mentioned above, Multifon, if you have a SIM card from Megafon, a virtual number from Rostelecom, Zadarma and the like.
Directly to your question:
https://pbxinaflash.com/community/threads/chan_mob...
https://jtanx.github.io/2016/02/24/using-asterisk-... Have
n't tried it myself