Question: What is the prescribed process for a working group to obtain new 3GPP specific result codes for a Diameter application, and what is the initial allocation size they can expect?
Option 1: Submit an individual request for each code via email to 3GPP TSG-CN WG 4, with an expected allocation of 5 codes.
Option 2: Contact 3GPP TSG-CN WG 4 via a Letter (LS) with application details and TS reference, receiving an allocation of 10 result codes.
Option 3: Define the codes internally and then inform 3GPP TSG-CN WG 4 after specification approval, without prior allocation.
Option 4: Contact 3GPP TSG-CN WG 4 via a Letter (LS) with the application's name and corresponding 3GPP TS reference, which will allocate a range of 20 result codes from each required group.
Explanation: This option correctly outlines the process: a working group must initiate contact via a Letter (LS), providing specific details, in response to which they can expect an allocation of 20 result codes from each necessary group, ensuring coordinated management and avoiding code duplication.