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 <nhofmeyr(a)sysmocom.de>
http://www.sysmocom.de/
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