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SNM - string of telephone number digits

HL7 Component Table - SNM - string of telephone number digits
Seq# Description Implement Flags Cardinality Length C.LEN Vocabulary Data Type
1 String of telephone number digits SHALL [0..1] [1..]    

Definition: A string whose characters are limited to "+" and/or the decimal digits 0 through 9. As a string, leading zeros are always considered significant.

Used only in the XTN data type as of v2.7.

Minimum Length: 1

Maximum Length: Not specified for the type. May be specified in the context of use

SNM is used for telephone numbers, so it is never appropriate to truncate values of type SNM.