58% of the $400B call center industry runs on on-prem phone systems, and until now, bringing AI voice automation to them meant ripping out their entire infrastructure first. @Callab_AI connects directly to legacy PBX systems like Cisco UCM and Mitel, with no migration needed. Congrats on the launch, @haithemkchaou & @chehir_dh! https://ycombinator.com/launches/QTC-cal…