The story
The institution was established in 1932 as a trust Svyazproyekt (Связьпроект). Its main task was statewide surveying of suitable locations and design of postal offices, telephone, and telegraph exchanges, and communications lines. It was reorganized into an institute and renamed accordingly in 1951. It was headquartered in Moscow and had subsidiaries in major regional centres. The first ones were in Leningrad, Kiev, Tbilisi, Minsk, Novosibirsk, Kuybyshev. Later more of them were established. Some of them were reorganized into independent institutes (1973: Leningrad, Kiev, Novosibirsk, 1978: Tbilisi, Minsk, Kuybyshev). After the dissolution of the Soviet Union they went into various post-Soviet States. In Russia, all subsidiaries have become independent companies: Giprosvyaz Spb in St. Petersburg, Giprosvyaz-4 (ru:Гипросвязь-4) in Novosibirsk, Giprosvyaz-Samara in Samara (former Kuybyshev).
From Wikipedia’s article on Giprosvyaz, shared under CC BY-SA 4.0.3