What is ANSWER CB GPU NS?

[Qeefahs]

What is the meaning of "ANSWER CB GPU NS" once we execute the NADAP command? also, how can we modify its value?

...
TYPE OF SERVICE CODE SERVICE CODE
ANSWER CB GPU NS 9
EXTERNAL NUMBER LENGTH DATA
EXTERNAL NUMBER NUMBER LENGTH
...

 

[himdp]

These are codes you would enter from a rotary dial instrument to answer a call to Common Bell (CB) Group Call (GPU) or Night Service numer (NS) since no star or hash is possible. Change using NASCS or remove with NASCR.