Cti Communications Ltd
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Analogue PBX to VoIP converter - PSTN to VoIP gateway

Old phone systems like the Panasonic KX Series can make and receive calls over VoIP, they just need a converter. If you have ISDN lines then you need our ISDN to SIP converter, if you have traditional analogue phone lines then you need this Analogue PBX to VoIP converter.

Keep your existing phone system and move your lines to VoIP and save pounds! Our Analogue PBX to VoIP converters can pay for themselves in just a few months.

You can connect up to two different providers and you can use your preferred VoIP supplier or one or both or ours.

Analogue PBX to VoIP converters

Select the correct unit to match your number of lines.

2 lines   95
Up to 4 lines 110
Up to 8 lines 190

The above prices include configuration to your chosen provicer, wiring kit as well as the Analogue PBX to VoIP converter


VoIP can provide Free phone calls and better than half price line rental.


Deal 1

6 per month per simultaneous call and you get 2500 mins of Free calls to UK landline / mobile numbers for each channel. For example, if you have 6 lines you would pay 36 per month for your phone bill and that would be it. Unless each month you make for more than 15,000 mins of calls or call International or premium numbers.

Deal 2

This is best for people who get lots of incoming calls on a single number as your monthly bill would be just 1. Outgoing calls are at very low rates, but we recommend that you make all out going calls via Deal 1 unless you only call out for a few hours a month.

How it works

You just take the BT line cable out of your junction box, and connect our Analogue PBX to VoIP converter in its place. Plug the Analogue PBX to VoIP converter into to your office / home network and then via the Internet it will register at the VoIP SIP exchange.

Your existing phone system doesn't know anything has changed, and you have saved the cost of buying lots of new phones and signing up for an expensive hosted VoIP service.



All prices exclude VAT, and were correct on 09/06/2022 15:28:59 , but should only be used as a guide.