== Asterisk DAHDI Channel Special Extensions Functions ==

||= '''Extension''' =||= '''chan_dahdi.conf parameter''' =||= '''Function''' =||
|| *0                ||                                   || hook flash ||
|| *67               ||                                   || disable Caller*ID ||
|| *69 	             || callreturn                        || say last caller's Caller*ID ||
|| *70 	             || callwaiting                       || disable call waiting for the current call ||
|| *72               || cancallforward                    || enable "call forward immediate" ||
|| *73 	             || cancallforward                    || disable "call forward immediate" ||
|| *78               ||                                   || enable "Do Not Disturb" ||
|| *79 	             ||                                   || disable "Do Not Disturb" ||
|| *60               ||                                   || add last caller's Caller*ID to blacklist |
|| *82               ||                                   || enable Caller*ID if previously disabled with *67 ||