DIN EN 14137-2004 邮政服务.服务质量.利用跟踪系统进行挂号邮件和其他类型邮件服务损失的测量
Postal services - Quality of service - Measurement of loss of registered mail and other types of postal service using a track and trace system; German version EN 14137:2003
This European Standard specifies methods for measuring the level of loss and substantial delay of domestic and cross-border registered letter mail, collected, processed and delivered by postal service providers. The resulting overall figure for loss and substantial delay is expressed as a percentage of the total posted registered mail collected or received by the postal service providers. This European Standard is applicable only to those service providers which have a measurement system in place which - records each item as it is posted, - records each item as it is delivered, - can, by comparing these records, count the number of items which have been posted and not delivered.