Man pages matching name asterisk::conf::iax in section 3pm:

Asterisk::Conf::IAX.3pm.en	debian 10 / libasterisk-agi-perl
Asterisk::Conf::IAX.3pm.en	debian 11 / libasterisk-agi-perl
Asterisk::Conf::IAX.3pm.en	debian 12 / libasterisk-agi-perl