CODEWITHSUNDEEP
androidipsipvoip
Brad Boil
Brad Boil

Reputation: 99

Direct IP call android

Im creating an Android App in which the clients can call each other without using a SIP proxy (server).

I downloaded the CSipSimple, it has a "local" option in which the clients in a local network can call each other directly.

What if I am connected to the mobile network. If i know the public IP of the destination, can I call him direclty?

If you can suggest another applications that fulfill the mentioned requirements please do mention them.

thanks

Upvotes: 1

Views: 5345

Answers (2)

Konstantin Konstantynin
Konstantin Konstantynin

Reputation: 51

I had the same issue with how to connect 2 android devices via VPN without PBX server. So, after establishing a VPN connection we were using Linphone app Settings for the correct work

Just click settings and disable the random port. If you need to call another device, just type sip:device_remote_IP_addres on the dial pad and click enter. For example, sip:192.168.1.2

Upvotes: 0

Adam Wright
Adam Wright

Reputation: 129

Yes, you should be able to make direct call with almost all SIP clients. I am using mizudroid and works with that.

In this case, you just need to enter the full URI for the destination and not just the extension name.

So instead of calling to "john" you will have to enter

john@ipaddress:port

Example:

[email protected]:14321

Some sip clients might require to prefix all these with "sip:":

sip:[email protected]:14321

As you can see, the tricky part is to find out the correct port. SIP clients are using random local ports by default, but some of them allows you to set the port explicitly. (Don't be confused with the server sip signaling ports which is usually 5060 after the SIP standards.)

Also please note that the role of a sip registrar is exactly this: so you don't have to play finding out the peer's exact address as the server can handle this for you automatically.

Some sip clients might require to enter a sip server address in settings/login, however most of them allows you to use the softphone without any address entered or they have an option to specify serverless/local/registerless or you might just enter a fake address (then the softphone might display "register failed" but you should be able to make direct calls as i have described above)

Upvotes: 5

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