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tnt, 11/13/2022 04:05 PM
OCTOI status update talk published


Initially we started to cover a couple of retronetworking topics at the OsmoDevCall, but it really made sense to run the pure retro related topics as a separate series of events. In October 2022, we forked the Retro Net working Call format from OsmoDevCall.

The format serves two major purposes:

  1. technical presentations about retronetworking relevant topics - ideally current/recent developments
    • can be pre-recorded to avoid any problems with technical setup, streaming, ...
    • should ideally have a Q+A session at their initial "airing" during one OsmoDevCall
  2. unstructured supplementary social event (USSE)
    • random chat in audio (optionally video)
    • not recorded, obviously

The recording of the technical presentation should then be permanently made available. The recordings can be found in several formats at . They can also be found on

Not every RetroNetCall would necessarily need the two parts, but I think it would be great if we can make that happen.


Wednesday evening, 8pm CET/CEST, every 1st Wednesday of the month

The next couple of events hence are:
  • Wednesday, November 9, 2022 (OCTOI project status update)
  • Wednesday, December 7, 2022
  • Wednesday, January 4, 2022
  • Wednesday, February 1, 2022
  • Wednesday, March 1, 2022

Venue / Platform

We are currently using infrastructure of KNF, a German non-profit internet organization of which laforge is a member.

The URL to join the meeting is

There currently is no password or authentication, we try to welcome anyone. If this turns out to be a problem, we might lock it down in the future, let's hope that's not required.

Topics (for the "presentation" part)


This is a wishlist of future topics for the "presentation" part:

Topic Possible Speaker Tentative Date
ISDN B-Channel protocols (X.75, V.120, V.110, T.70, ...) laforge
Token Ring
Frame Relay
The X.25 Packet Switched Network
The X.21 synchronous serial interface
Analog Telephone Modems and towards a 2022 OSHW softmodem laforge + tnt
E1: The analog side tnt
ISDN: Differences DSS1 <-> 1TR6
X.31: Two flavours of X.25 over ISDN


We'll move the events from the above table to here once they have happened.

Topic Speaker Date Video
TDM, E1, PDH, SDH, STM-1 and Pseudowires laforge 2021-11-12 H.264
iceE1usb in practice tnt 2021-11-12 H.264
Retronetworking: V5 interfaces in ISDN/PSTN laforge 2021-12-28 H.264
Osmocom Community TDMoIP (OCTOI) laforge 2022-04-29 H.264
OCTOI project status update laforge 2022-11-09 H.264

Code of Conduct

The existing Code_of_Conduct of our previous physical / on-site / presence meetings applies.

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