https://payphones.telesfor.org/ 2026-11-12T01:54:36+00:00 https://payphones.telesfor.org/ https://payphones.telesfor.org/lib/exe/fetch.php?media=logo.png text/html 2026-11-11T03:51:48+00:00 admin (admin@undisclosed.example.com) https://payphones.telesfor.org/doku.php?id=smart:elcotel&rev=1794369108&do=diff Elcotel Elcotel 5 Elcotel 5 was introduced in April 1989. It needs a 6V lead or NiCad battery to operate, slowly charged from the phone line only when off-hook. Settings and rates are stored in the non-volatile memory (8kB EEPROM) and will never be lost even if battery is drained. text/html 2026-11-11T03:49:33+00:00 admin (admin@undisclosed.example.com) https://payphones.telesfor.org/doku.php?id=coin:1slot&rev=1794368973&do=diff Single-slot payphones (placeholder) In 1965, AT&T introduced its first redesign of the pay telephone — the single slot, flat fronted 1A1. The design remained mostly the same until the 90s. There were a few types of the 1-slot phones, determined by the control board and its text/html 2026-11-10T19:27:31+00:00 admin (admin@undisclosed.example.com) https://payphones.telesfor.org/doku.php?id=start&rev=1794338851&do=diff Intro The goal of these wiki pages is to gather and arrange knowledge related to payphones in the US back in a days, and how to bring them back to life. The primary issue we aim to address is the lack of a structured knowledge base. Existing websites are no longer kept up-to-date, and some content, such as manuals, tends to be repetitive or unhelpful, creating a false impression of having more information than there actually is. text/html 2026-11-09T23:17:32+00:00 admin (admin@undisclosed.example.com) https://payphones.telesfor.org/doku.php?id=smart:elcotel:docu&rev=1794266252&do=diff Documents [Elcotel Series 5 Operation Manual] – original manual by Elcotel [Compact Field Guide for Series-5] – by Elcotel, very useful, incl. init, troubleshooting, error codes etc. [LP Firmware (5.4.2) Operation Manual vol. 2] – very interesting firmware release information for Series 5 / Olympian 5501 explaining all the registers, not described anywhere else. text/html 2026-11-09T16:10:47+00:00 admin (admin@undisclosed.example.com) https://payphones.telesfor.org/doku.php?id=smart:elcotel:reveng&rev=1794240647&do=diff Elcotel reverse engineering Initially I was struggling trying to program Elcotel 5 controller and attempted to reverse-engineer the configuration files. Since I was able to program the phone, it became less of a priority but I accepted the challenge. Elcotel engineers tried to protect their business by making the rate changes difficult text/html 2026-11-09T16:06:09+00:00 admin (admin@undisclosed.example.com) https://payphones.telesfor.org/doku.php?id=smart:elcotel:program&rev=1794240369&do=diff Elcotel programming Programming of Elcotel 5 board has to be done with the PNM software. This requires: * a PC with Windows 3.11 or 95. Windows 98 might require use of DOS compatibility mode. Ideally a PC from the era - 486 or Pentium. * Software works with text/html 2026-11-08T04:28:20+00:00 admin (admin@undisclosed.example.com) https://payphones.telesfor.org/doku.php?id=coin:3slot&rev=1794112100&do=diff 3-slot payphones (placeholder) I don't anticipate anything to be here in the near future. If you'd like to help creating this content, please contact me. Large collect of 3-slot payphones: <https://3slotpayphones.com> text/html 2026-11-06T15:51:37+00:00 admin (admin@undisclosed.example.com) https://payphones.telesfor.org/doku.php?id=sidebar&rev=1793980297&do=diff START Smart payphones (COCOT) * Elcotel * Documents & resources * Programming * As regular phone * Reverse engineering * Keypad mod for Olympian * Protel * Documents & resources * Programming * Ernest * Nortel millennium * Programming * Documents & resources * Coin recalibration * Demo firmware wizard * Miscellaneous documents Coin line payphones * Single-slot * Coin validator * 3-slot (placeholder) Instruction cards Telephone lin… text/html 2026-11-06T15:32:59+00:00 admin (admin@undisclosed.example.com) https://payphones.telesfor.org/doku.php?id=smart:elcotel:coinmode&rev=1793979179&do=diff Using Elcotel 5 / 5501 as a regular phone Elcotel 5 / Olympian 5501 board, when initialized, is mostly unusable - majority of numbers cannot be called without programming the rates. Essentially, only 7-digit numbers work with a 25 cent charge. I found a way to make the phone text/html 2026-11-06T05:53:45+00:00 admin (admin@undisclosed.example.com) https://payphones.telesfor.org/doku.php?id=coin:1slot:coinval&rev=1793944425&do=diff 1D coin validators Single slot 1D phones (and newer retrofit controllers by Elcotel, Protel, AT&T and others) utilized different coin validators – from mechanical 20A (with 47A electronic sensor module) to fully electronic ones – MARS LPV 226WE and text/html 2026-11-04T18:18:15+00:00 admin (admin@undisclosed.example.com) https://payphones.telesfor.org/doku.php?id=smart:protel:docu&rev=1793816295&do=diff Manuals Protel CTR-201 [CTR-201 manual by GTEL] [Programming the Protel CTR-201 COCOT by El Oscuro] unofficial guide, has more details on rate bands Protel 310 [310 manual by GTEL] Protel 2000 [Protel 6000 pocket reference] - A quick reference, it says 6000 but the actual board is same as the 2000. Protel 7000 [Protel 7000 manual] - complete manual by Protel. Installation, initialization, troubleshooting, specs.