The A link is much less vulnerable to latency than the Abis, so yes, if you have a flaky link, it is recommended to run the A interface over the flaky link, not Abis. That is the main reason why we implemented inter-BSC handover.
~N On Fri, Jun 30, 2023 at 07:32:54PM -0800, Mychaela Falconia wrote: > Hello Community, > > Quick question: if I have to set up a network where the BTS is > physically distant from the MSC, such that either the A link or the > Abis link has to be carried across public Internet (or inside an > encrypted tunnel running over public Internet), would it be better to > colocate OsmoBSC next to OsmoMSC, running Abis across the Internet- > based hop, or colocate OsmoBSC next to OsmoBTS and have A running > across that long hop instead? > > I recall hearing that the A interface carries significantly less > traffic than Abis, and therefore the recommended config is to have > OsmoBSC next to the BTS. However, it is only a vague recollection on > my part, without certainty, hence I thought I would ask here to > confirm, before I embark on a more detailed design of the proposed > production network in this config. > > TIA, > Mychaela -- - Neels Hofmeyr <[email protected]> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Harald Welte
