An open source implementation of the LE (Local Exchange) side of the ETSI/ITU V5 interface, in order to talk to Access Multiplexers (AN), such as Nokia EKSOS, DeTeWe ALIAN, etc. https://osmocom.org/projects/retronetworking/wiki/Osmo-v5
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README.md

osmo-v5 - Osmocom implementation of ETSI/ITU V5 interface

This is a repository containing code implementing the ETSI/ITU V5 interface as specified in ITU-T G.964 + G.965.

V5 is an interface spoken between digital telephone exchange and its [remote] access network (multiplexers + concentrators of subscriber access lines).

For some general intro into V5, you might find the following OsmoDevCall recording interesting: https://media.ccc.de/v/osmodevcall-20211228-laforge-retro-isdn-v5

Initial development was done just using the spec as reference; from 09/2022 onwards a Nokia EKSOS N20 became the primary target. The code has been uses successfully against Nokia EKSOS N20 and Siemens Fastlink.

Homepage

The project homepage is at https://osmocom.org/projects/retronetworking/wiki/Osmo-v5.

GIT Repository

You can clone from the official osmo-v5.git repository using

    git clone https://gitea.osmocom.org/retronetworking/osmo-v5

There is a web interface at https://gitea.osmocom.org/retronetworking/osmo-v5

Mailing List

Discussions related to osmo-v5 are happening on the discussion@lists.retronetworking.org mailing list, please see https://lists.retronetworking.org/postorius/lists/discussion.lists.retronetworking.org/ for subscription options and the list archive.

Please observe the Osmocom Mailing List Rules when posting.