Thanks — I can build that communication matrix but need a few details to be accurate. Quick questions: 1. Which Cisco product/service are you integrating with (e.g., CUCM, BroadWorks, Webex Calling, or a specific SBC)? 2. Do you need LiveKit’s network details, the Cisco side details, or both? 3. Which SIP transport will you use: UDP, TCP, or TLS/SIPS? 4. Will you use SRTP or plain RTP for media? 5. Are clients behind NAT / using TURN/STUN, or will media flow directly between provider and your network? 6. Any required RTP port range constraints on your firewall (narrow range vs. ephemeral)? 7. Preferred codecs and DTMF method (e.g., OPUS, G.711, RFC2833)? 8. If available, share topology (SBC IPs/subnets) or whether the Cisco side needs IPs to whitelist. Answering these lets me produce the exact Source/Destination IP list, SIP signaling ports, and recommended RTP port range and firewall rules. , with interactive elements