Using the default naming convention

The IBM-supplied command lists generate names for resource definitions using either an IBM-supplied or user-written naming convention. Names are generated in the following manner:

The first character is N, identifying the name as being generated by VTAM® for dynamic I/O configuration.
The second character is the subarea number expressed as a single character (0–9 or A–Z). For example, a communication controller in subarea 6 has a second character of 6. A communication controller in subarea 35 has a second character of Z. A communication controller in subarea 36 has a second character of 0, because subarea numbering begins with 1, not 0. The maximum number of subareas that can be defined using the IBM-supplied naming convention is 36.
The next four characters are the 4-digit device address, represented in hexadecimal.
In the definition of a single device, a number of resources must be named. The last characters depend on the resource being named:
L

LINE

G

GROUP

D

Data-set name

xx

2-digit hexadecimal local address for the logical unit attached to the cluster controller (3x74)

For example, the name generated for the definition of a device at X'123' in subarea 6 is named N60123D. The LINE name for the device is N60123L.