"Case or decision","Expected rule or evidence","Initial status","Actual result","Owner","Evidence reference"
"Number route","Authorized DID and carrier-supported destination","Not verified","","",""
"Signalling and media","Separate endpoints and network paths documented","Not configured","","",""
"Codec and DTMF","Both ends agree; observed audio and digits correct","Not tested","","",""
"Security","Provider-supported authentication, access controls and encryption","Not verified","","",""
"Transfer and overflow","Exact mechanism, leg limits and fallback tested","Not tested","","",""
"One-way audio and disconnect","Handset evidence and clean session release","Not tested","","",""