4 Overview
34.123-13GPPPart 1: Protocol conformance specificationRelease 15TSUser Equipment (UE) conformance specification
4.1 Test Methodology
4.1.1 Testing of optional functions and procedures
Any function or procedure which is optional, as indicated in the present document may be subject to a conformance test if it is implemented in the UE.
A declaration by the apparatus supplier (ICS) is used to determine whether an optional function/procedure has been implemented.
4.1.2 Test interfaces and facilities
Detailed descriptions of the UE test interfaces and special facilities for testing are provided in [10].
4.2 Implicit Testing
For some 3GPP signalling and protocol features conformance is not verified explicitly in the present document. This does not imply that correct functioning of these features is not essential, but that these are implicitly tested to a sufficient degree in other tests.