The Hunharian telephone network was the Hungarian Mail's and Railway's own one. We called them for the mail's wires, and the mail's poles.
The Hungarian National Railways (MÁV) and near the river dams was used similar technology, which used the mail.
The Insulators's number are from the mails's name: Hungarian Mail: "Magyar Posta" : MP-2 and MP-3, these are the globe-head Insulators only.
The transposition insulator is: MPK Insulator in one size. The MPK is: "Magyar Posta Keresztezési" : Hugarian Mail Transposition. This 2 type are telephone Insulators only.
The other Insulators made for the telegraph lines. There used 5 mm steel wires, it were had to hold. Lot of Insularor were manufactured for it, and they were not have to, because the telephone lines were better, and it didn't need fat steel wire. Bronze wires were used.
Lot of Insulators remained, ant they were built in the telephone lines, cylinder-heads, DGs. I don1t know their number. Info about the insulators are here.
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