The front-end URLs are:
| Synchronous front | https://serveis3.nt.aoc.cat/siri-proxy/services/Sincron |
| Asynchronous frontend | https://serveis3.nt.aoc.cat/siri-proxy/services/Asyncron |
| Asynchronous-response front-end | https://serveis3.nt.aoc.cat/siri-proxy/services/AsyncronResposta |