How to test anlaog phone without land line ?

Thread Starter

naseeam

Joined Jan 4, 2017
61
Please advise how to test analog phone without analog phone service.

Is there inexpensive instrument I can purchase to do this test ?
 

jaredwolff

Joined Jul 1, 2017
58
Are you testing to make sure there's a dial tone? Or more like a loopback? You can buy a cheap PBX box of some kind, plug it in and make sure you can issue commands to it and that you can hear the response. Folks on here who have worked on these systems may have a better idea..

(If you do a search for Cisco SPA112, that is the relatively cheap box you can buy. Plenty of them, and their cousins, on eBay for cheap cheap cheap)
 

R.E.

Joined Jul 29, 2017
56
I've used these in the distant past and they work well;
https://www.vikingproductstore.com/Line-Simulators-Ringdown-Circuits/

I also built a circuit from an Electronics Now project that incorporated supplying dial-tone and talk-battery to analog sets from a home PBX type project. It was rife with mistakes and circuit errors though, I did manage to get them figured out and the circuit working.

There are plenty of schematics available from searching Google as well.
 
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