On Thu, Jun 13, 2024 at 01:29:42PM -0000, [email protected] wrote:
> I opened this issue for your support and suggestions.

This here is a mailing list post, by "issue" we usually mean a ticket in our
issue tracker, osmocom.org.

> I wanted to set half-rate on one trx so that more phones could talk.

You could also try dynamic timeslots: they switch between TCH-F, TCH-H, PDCH
and SDCCH as needed. See chapter 11.7 in the BSC manual:
https://ftp.osmocom.org/docs/osmo-bsc/master/osmobsc-usermanual.pdf

> On my first try, I get this warning("Assignment for this trans already 
> started earlier"- from osmo-msc-  function : msc_a_try_call_assignment)

[shortened]
> network
>  network country code 901
>  mobile network code 75
>  bts 0
>   type sysmobts
>   trx 0
>    timeslot 0
>     phys_chan_config CCCH+SDCCH4
>    timeslot 1
>     phys_chan_config TCH/H
>    timeslot 2
>     phys_chan_config TCH/H
>    timeslot 3
>     phys_chan_config TCH/H
>    timeslot 4
>     phys_chan_config TCH/H
>    timeslot 5
>     phys_chan_config TCH/H
>    timeslot 6
>     phys_chan_config TCH/H
>    timeslot 7
>     phys_chan_config TCH/H
> msc 0
>  codec-list hr1 fr1

Looks fine to me, it should work.

This is not enough information to find out the MSC's problem. Maybe you can
provide more logging and a network trace, and osmo-msc.cfg. (To share large
files, it's better to create a ticket on osmocom.org and attach it there.)

Thanks for reporting! We are always glad to uncover unknown bugs and improve
error handling.

~N

-- 
- Neels Hofmeyr <[email protected]>         https://www.sysmocom.de/
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