How to implement ip telephony at home?

Question

Asterisk

Hello! I live in a fairly large private house, where each family member has his own room, computer and android phone. Sometimes you just want to call your brother, who is sitting on the second floor, or your mother in the gazebo (wi-fi is there), and not scream. Tell me how to implement? I worked very little with IP-telephony. I think you can deploy an asterisk on a router with openwrt and use some kind of application like viber for LAN on phones ... Can you recommend cheap fixed IP phones (~ 1 tr) to put in the rooms?
PS Internet only 3G, traffic is limited.

Answer 1

Cheap Fixed IP Phones

- look towards Yealink. The best of the inexpensive ones.
As an IP PBX, it is better to use Paspberry Pi or some other dedicated computer - "so that problems in one do not pull the other."
For phones - Android, depending on the version, has a built-in SIP client. If the versions are older - I recommend Zoiper or Linphone.
Concerning setup of automatic telephone exchange - for internal calls everything is simple. You add users, give numbers and passwords, register in phones - and it works.
This way out is already more complicated, but there are just a lot of articles on setting up.

Answer 2

Yesterday I noticed an interesting application on the Google market - grandstreem wave. Judging by the description, you can turn any android device (old phone, TV set-top box, tablet, etc.) into a SIP telephony server. You will get an external SIP trunk (s) on it and you will be happy ... Exclude transcoding (different codecs) on sip peers (subscribers) and the load on the hardware of the "server" will be purely nominal ... PS I did not try it myself - only read. I use Asterisk in its purest form.

Answer 3

forget about ip-telephony.

IP telephony - voice communication over IP
SIP (Session Initiation Protocol) - an IP telephony signaling protocol used to establish, modify and terminate VoIP telephone calls.
VoIP (Voice over Internet Protocol) - a communication system that provides voice signal transmission over IP networks
.... well

Answer 4

forget about ip-telephony. more relevant sip-telephony. you put a server on an atom. raise an asterix on it. kerio operator ... yes, anything. hook it up to the net. on the phones of the sip program (considering that the waffle is scattered around the house). sip phones in the rooms. from the sip server to the provider to raise the links. and voila... works for centuries.

Answer 5

Isn't it easier to buy a DECT phone with the required number of handsets + optionally add a SIP gateway, for example, Cisco SPA-112 for calling through a sip provider outside via the Internet.
Well, either install a server with asterisk or buy an office PBX + buy ip phones for this, such as Siemens C510IP (about 2-4t.r.) or use smartphones ... Google has many options https://ipv6.google.com/search ?newwindow=1&output=...