Data Element & Code Sets Directory
Communication medium type code
 
Code specifying the type of communication medium.
       
   
S
Old Code
 
 
AA
=
Circuit switching
A process that, on demand, connects two or more data terminal equipments and permits the exclusive use of a data circuit between them until the connection is released (ISO).
     
+
EI
=
EDI transmission
Number identifying the service and service user.
     
+
MA
=
Mail
Postal service document delivery.
     
 
TE
=
Telephone
Voice/data transmission by telephone.
     
 
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Edition 2016 Upd. 2021