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Ericsson Old PBX

Ericsson Old PBX

Ericsson Old PBX

Hi all,

I´m a telephony instructor in Brazil and I need to discover the model of a Ericsson PBX.

The PBX have 5 lines and 30 extensions, with a crossbar switch and two power suplly (24 and 48 V). The crossbar is in the upper part of the frame. In the middle a nd the low parto of the frame have a lot of eletromagnetic relay.

It have too a manual switch with manual keys, rotary dial and a monophone.

It was used in a hospital until 5 years ago and seems to be made in the 60/70.

Any help it will be apreciated.


Ademar F. fey

RE: Ericsson Old PBX

If it has 8 verticals in the Xbar switch it is an ARD526

RE: Ericsson Old PBX

All Ericsson Xbar I have seen has a letter stamped on the relay armature.
"eg" lr-br for line relays
      M for marker
      R for register etc

RE: Ericsson Old PBX

Hello all,

Yes, the PBX have 8 verticals (If it has 8 verticals in the Xbar switch it is an ARD526).

It seems to be the ARD526 Ericsson PBX.

Anyone have some documentation about it ??

Thanks in advanced,


RE: Ericsson Old PBX

It is many years since I have worked on them but I will see if I can find any of my notes on them.

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