Request to block or unblock all the user ports associated with the current IG by port type. This is needed to be compiliant with the V5.2 requirement for Accelerated Port Alignment. The status result of this request will be indicated by v52IgPortAlignmentStatus and the individual user port block status will also be updated. Valid values for the variable are: * noRequest - this is the default value. * blockAll - block all user ports associated with this IG. * blockIsdn - block all the isdnBa and isdnPra user ports associated with this IG. * blockPstn - block all the pstn user ports associated with this IG. * unblockAll - unblock all user ports associated with this IG. * unblockIsdn - unblock all the isdnBa and isdnPra user ports associated with this IG. * unblockPstn - unblock all the pstn user ports associated with this IG. When v52UserPortBlock at the user port level is set to be 'blockedNotSuitableForGroupUnblocking', the user port will not be unblocked by issuing an unblocking request using the v52IgPortAlignmentRequest. 'blockAll' option is currently not supported.