[asterisk-users] Meaning of " requested special control 20, passing it to SIP"

[John Novack]

Received this on the console
-- IAX2/76.21.238.129:4569-4986 requested special control 20, passing it 
to SIP/magicjack-08225a58


Did a Google search, but reached a dead end
Can anyone explain?
Something need to be changed in my configuration?
The call completed satisfactorily.

Inbound IAX trunk - outbound to SIP provider magicjack ( no dongle )

Asterisk 1.4.26

TIA

John Novack

-- 
Dog is my co-pilot