On MiVB, the option to disable “History-Info” in outbound SIP trunk calls can be found under
SIP Peer Profile ->
Signaling and Header Manipulation ->
Suppress Redirection Headers ->
“Yes” (To exclude History-Info/Diversion/Referred-To headers in outbound calls)
If for any reason there is a need to remove any SIP headers coming from carrier, this can be done using SIP adaptations on MBG.