Review on Radio phone Panasonic KX-TG1611 gray by Adam Edison ᠌

Both we and our parents have long abandoned the traditional telephone line. We use cell phones. But talking on a cell phone for a long time is not very comfortable. After a while, the ear begins to "burn". I bought several Cisco SPA 122 VOIP gateways on ebay (three for 700 each (I was in a hurry, you could wait a little bit and buy 500 each) and one for 100). One gateway is two independent telephone lines. I bought in the same place on ebay some for 100, and some gave away several Panasonic tubes for free. Dismantled everything, washed it. Batteries were replaced with new ones. I put 4 tubes in my parents' private house: two on the first floor of the house, one on the second, and one on the third. And in my apartment there are 4 tubes in all rooms)) Raspberry Pi of the second version has been lying idle for a long time. I bought a 2.5-inch 500 gigabyte disk on ebay for 800. and on Aliexpress USB BOX for him for 200. I installed raspbian, on it a digital PBX asterisk. At the same time, download torrents were made on the same mini computer. The consumption of a raspberry with a disk is about 0.1 kilowatt per day. Between the parents' routers and us is openvpn. Asterisk does not look directly at the Internet for security reasons. Access only from the local network. Communication with the outside world through trunks: Zadarma and SipNet. No subscription fee. Charge only for external calls. For example, to Hong Kong and St. Petersburg for landlines through Zadarma, the cost is about 60 kopecks per minute with per-second billing. Very cheap international calls. The system can be freely expanded. The plans are to connect a trunk from a USB modem with a SIM card of some kind of cheap tariff and make another line via GSM.