The value of tmnxMobPdnVisitingPlmnList specifies the Visiting Public
Land Mobile Network (V-PLMN). A PLMN list consists of a list of
Mobile Country Code (MCC) and Mobile Network Code (MNC) ids.
If a corresponding PLMN does not exist in
TIMETRA-MOBILE-PROFILE-MIB::tmnxMobProfPlmnListTable,
an 'inconsistentValue' error will be returned.