How to expand analog telephony in the office?

Question

Telephony

Good afternoon.
There is an office with a working analog mini-automatic telephone exchange for 8 internal numbers. PBX without the possibility of an upgrade. Now the question arose about the expansion of the office and telephony, respectively. Changing analog to IP telephony is expensive. One device from 3t.r. What is the cheapest way to expand an analog network? Well, except how to change the PBX itself

Answer 1

We somehow just bought another PBX, connected it to the existing one and printed out a memo on how to call someone. It is better that frequently calling on one automatic telephone exchange were.
Tembolee, no one forces a new automatic telephone exchange to be bought - firms write off and get rid of rubbish, system specialists drag them to Avito for a penny. https://www.avito.ru/?q=%D0%9C%D0%B8%D0%BD%D0%B8-%...