Depending on the switch firmware, avaya ports are now labeled avaya and not Nortel

$os_group = "avaya";
$config['os_group'][$os_group]['port_label'][] = '/Nortel .* Module - (.+)/i';

add

$config['os_group'][$os_group]['port_label'][] = '/Avaya .* Module - (.+)/i';

or change to

$config['os_group'][$os_group]['port_label'][] = '/(Nortel|Avaya) .* Module - (.+)/i';