Summary

  • A dial-up call to SezamPro’s local system was not automatically a general Internet connection. The service passed through distinct stages: its earlier BBS, a connection through Belgrade’s academic network, an email gateway and later a provider circuit.
  • The history is best read as an access stack, not as a contest for one “first” date. Founders disagree about the commercial launch day, and accounts also differ on when the café opened.

In 1995, a telephone modem could connect a customer to SezamPro without connecting that customer directly to the global Internet. That distinction is easy to lose in retrospective accounts that compress a BBS launch, an academic link, an Internet-facing service and a retail ISP into one milestone. SezamPro’s own history shows the work between them.

SezamPro grew out of Sezam, a Belgrade bulletin-board system founded in 1989. (Ristanović, “Sezam”.) Its operators planned a successor for users who wanted a larger online service and better links to other systems. A contemporaneous SezamPro description lists eight public dial-in lines, a NetWare network and 14.4 kbps modems. It also describes subscriptions with daily time limits. The dial-up line brought a user to Sezam’s own environment; the service description does not say that each call provided unrestricted TCP/IP access to the Internet. (Ristanović, “SezamPro”.)

Even the start date resists a neat anniversary. Dejan Ristanović’s “Founding SezamPro” remembers commercial operation beginning on 19 November 1995 at 03:40. His separate tenth-anniversary history gives 19 December. Cofounder Danko Jevtović’s 2026 account also says 19 November. Those are attributed recollections, not independent logs. “Late 1995” is the safer chronology unless the disagreement itself is the subject. (Ristanović, “Founding SezamPro”; Ristanović, anniversary history; Jevtović.)

The next layer was an Internet handoff. Jevtović recalls a Token Ring connection to the academic network through Belgrade’s Faculty of Technology. Ristanović’s account says that by the end of January 1996 SezamPro had established a leased connection to the academic network, then described as Yugoslavia’s only Internet provider. A gateway written for Sezam’s proprietary BBS software carried email between that system and Internet mail. That could connect people and messages internationally without making every dial-in session equivalent to an ordinary Internet account.

Email exchange, a remote Telnet login, a BBS prompt and general Internet access were different capabilities.

The café made the distinction visible. Ristanović describes SezamCafé as a place for people without a computer or modem to try the Internet. He dates Internet access at the café to April; Jevtović remembers the opening in May and calls it the first cybercafé in Yugoslavia. PC Press’s May 1996 issue index also records a SezamCafé item. The sources confirm an important access experiment, but they do not settle the exact opening day or independently establish national priority. (PC Press, issue 14; Ristanović, “Pun Internet”.)

Opening a room was not the same as scaling the service. In Ristanović’s sequence, the summer brought a port to 32-bit Windows NT that let users reach the system through Telnet. The next constraint was capacity: the eight lines were already important for console access, while longer Internet sessions would occupy them. He places the new provider line’s operation on 25 October, a public event at the café on 29 October and full Internet access in the service offer on 1 November. Jevtović remembers obtaining 18 more telephone lines, then a 128 kbps dedicated dial-up line to Beotel on 29 October. His account says a planned EUNET backup did not materialize. These dates and arrangements are recollections from people involved; they describe separate milestones and should not be collapsed into one launch. (Ristanović, “Pun Internet”; Jevtović.)

Beotel’s satellite connection was upstream of its service to SezamPro. It is therefore imprecise to say that SezamPro itself ran a satellite link. A 1997 WIRED report saw four café computers linked locally to SezamPro hosts and those hosts connected through a 128 kbps leased line. The account places SezamPro alongside the University of Belgrade and Radio B92 as one of several routes between users in Serbia and the wider network. The picture is layered: a visitor used a café terminal; a subscriber called the local system; the operator connected that system to an upstream provider; and the provider had its own international path. (WIRED, “The Internet Revolution”.)

There was no single architecture that can safely stand for “Serbia’s first Internet.” B92’s OpenNet history describes an Internet department that began with dial-up to Amsterdam’s XS4ALL, then moved to an analogue leased line with six local dial-up lines. RCUB’s institutional chronology dates its academic-network connection through BeotelNet to 28 February 1996 at 64 kbps; a University anniversary account gives 27 February. The one-day discrepancy remains in the record. Each account marks a different institution, service and threshold. None alone is a complete census of when every user could reach the Internet. (B92.ISP, “History”; RCUB, “History”; University of Belgrade, 20-year account.)

SezamPro’s path was not a switch from “offline” to “online.” It was a succession of working layers, each with a distinct limit: the BBS software shaped what users could do, the academic connection provided an early external path, a mail gateway bridged incompatible systems, the café widened access beyond computer owners, telephone lines constrained concurrency, and provider connectivity made broader service possible. The word “ISP” can name the destination, but it does not explain the route used to get there.

Sources and limits

Operator and cofounder recollections establish what their authors remember and describe; they are not traffic logs. PC Press’s issue index confirms coverage of a café opening but not its “first” status. RCUB and the University give different February dates. WIRED’s estimates and interviews are bounded observations, not nationwide adoption measurements. The article does not claim that SezamPro carried B92’s censored broadcast or that sanctions alone explain the capacity constraints.