Auto dial/busy camp on the analog trunk



I’ve read the official documentation for busy camp on guide for extensions and SIP trunks, however i couldn’t find anything about analog trunks.
We have one analog trunk that can only take one call at a time. What we want is if extn 1000 is dialing an external number using the analog trunk but at the same time extn 1002 starts dialing an external number using the same analog trunk. Instead of playing “All circuits are busy”, busy camp on should be activated for that analog trunk.
Is this possible?
Thank you!


absolutely not, 1 PSTN 1 single conversation at the same time, 2 on 2 and so on