5.2.3.1. General plausibility information 
The amo syntax checks cannot verify all implausible administered alternate
routing informations.
The administrator therefore has to verify itself very careful, whether
alternate routing destination numbers in networking leads to seizable
destinations.
Even if implausible alternate routing data passes the amo syntax
check, call processing will prevent system confusion like loops in switch
or networking.
Unusable alternate routing destination numbers will be indicated by
advisory outputs at usage time, if the related DIAGS switches are set.