Used Telephone Systems and Spare Parts
A telephone system is the central unit that connects your office phones to each other and to your outside lines. It is also called a PBX. It routes calls between extensions and runs features such as call transfer, hunt groups and voicemail. This range covers used telephone systems and parts from Avaya, Nortel, Panasonic, Samsung, Mitel, Siemens, Alcatel, NEC, LG, BT Business, Toshiba and ShoreTel.
Most buyers are engineers and businesses keeping an existing system running, such as an Avaya IP Office, Nortel BCM, Panasonic KX-TDA or Mitel 3300. You can buy a complete system chassis, or add system cards and expansion modules to the one you have.
Showing 1–12 of 666 resultsSorted by popularity
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Avaya DS8
£37.00 £30.83 Ex. VAT -
Sale!
Avaya IP500 V2 IP Office
Original price was: £165.00.£48.13Current price is: £48.13. £40.10 Ex. VAT -
Avaya BRI2 Combo Card
£30.00 £25.00 Ex. VAT -
Samsung Officeserv 7200 Phone System
£62.50 £52.08 Ex. VAT -
Panasonic KX-NCP1180 LCOT4
£55.00 £45.83 Ex. VAT -
Panasonic KX-NCP1170 DHLC4
£30.00 £25.00 Ex. VAT -
Avaya VCM32 Card
£42.00 £35.00 Ex. VAT -
Sale!
Avaya IP500 V1 IP Office
Original price was: £183.60.£174.13Current price is: £174.13. £145.10 Ex. VAT -
AVAYA IP500 DIGITAL STATION 30B
£45.00 £37.50 Ex. VAT -
Panasonic KX-NCP1280 BRI2 2 Port Basic Rate ISDN Card
£30.00 £25.00 Ex. VAT -
Panasonic KX-TDA3161NE 4 Port Door Phone Card
£80.00 £66.67 Ex. VAT -
Panasonic CLI Card
£30.00 £25.00 Ex. VAT
How to choose a used telephone system
Start with your system family
Parts work only within their own system family, and often within one generation. Read the make and model on your main unit, such as Avaya IP500, Panasonic KX-TDA100 or Samsung OfficeServ 7200, and stay within that family.
Count lines and extensions
List your outside lines (analogue, ISDN2, ISDN30 or SIP) and the number of extensions you need, with room to grow. The control unit sets the maximum size. Cards and modules fill its free slots and ports.
Keep your phones and wiring
Digital system phones only work with their own make of telephone system. To keep your handsets, desk wiring and programming, choose a replacement unit or extra parts from the same family as your current system.
Plan for the ISDN switch-off
UK ISDN and analogue lines are being withdrawn, with the national switch-off planned for January 2027. If your system uses ISDN cards, check whether it supports SIP trunks. Some businesses move to a hosted phone system instead.
Replacing your old system
If you move to a new platform, we also buy used telephone systems. Send the make, model and a list of the cards and handsets you have through the sell page, and we will come back to you.
What a telephone system is made of
| Part | What it does | Examples in this range |
|---|---|---|
| Control unit (chassis) | Holds the processor, power supply and card slots | Avaya IP500 V1, Panasonic KX-TDA100, Mitel 3300 CXi II |
| ISDN30 line card | Connects ISDN30 (E1) outside lines | Avaya IP500 PRI ISDN30 Card (E1), Samsung TEPRIa ISDN30 Card, Panasonic KX-TDA0290 PRI Card |
| Digital extension card | Connects the maker's digital system phones | Panasonic DLC8, Avaya DS8 |
| Analogue extension card | Connects single-line phones and fax | Panasonic SLC8 KX-TDA0173, Avaya IP500 PHONE8 Card |
| Expansion module | Adds extension or line ports beyond the main unit | Avaya DS30, Nortel DSM32+, Mitel ASU II |
| VoIP card | Handles calls between IP and non-IP phones and lines | Avaya VCM32 Card |
| Voicemail card or unit | Records messages and plays greetings | Samsung SVMi-20E, Panasonic KX-TVM50E, Siemens IVM P8 |
Questions
Why buy a used telephone system?
Most buyers want to keep an existing system running. A used telephone system or part from the same family lets you replace a failed unit or add extensions without changing your phones, wiring or programming. Once a maker stops production, used parts are often the main source.
Which office telephone systems are in this range?
This range covers on-site telephone systems from Avaya, Nortel, Panasonic, Samsung, Mitel, Siemens, NEC and other makes, most of them used. They suit offices that already run that make. For a new office, you may also want to compare a 3CX phone system or a hosted service.
What decides the cost of a telephone system?
The system family and the number of lines and extensions decide most of it. A small control unit with a few cards needs far fewer parts than a large system with expansion modules, licences and voicemail. Send your line and extension count through the quote form for an answer that fits your site.
What can I do if part of my telephone system fails?
You can usually replace the failed part with a used one from the same family. Faults often sit in a single card, module or power supply, so you may not need a whole new system. Our repair service can also look at faulty equipment.
Do you buy used telephone systems?
Yes. We buy used telephone systems and office phones. Send the make, model and a list of the cards and handsets you have through our sell page, and we will come back to you.
Need a model that is not listed?
Send us the model numbers and quantities you need. We will reply with what we can supply.
Request a quote- Delivery: free next-day delivery to UK mainland addresses on in-stock items ordered by 3pm.
- Returns: within 14 days, see delivery information.
- Replacing old equipment? We buy used phones and systems and repair phones.
Buying refurbished phones and phone system hardware helps to reduce your impact on the environment, using less resources and reducing landfill. We can also recycle your old desk phones, back into the supply chain. Contact our team today and find out what help we can provide with your office telephones.