06.773GPPMinimum Performance Requirements for Noise Suppresser Application to the AMR Speech EncoderTS
This clause defines requirements regarding the interactions between GSM supplementary services and the Noise Suppression Feature.
The application of Noise Suppression shall not interfere with the provision or invocation of any supplementary services.
8.2 Explicit Call Transfer (ECT)
No adverse interaction. If the new party is a mobile station with support for the Noise Suppression feature, the noise suppression feature shall be invoked.
8.3 Call wait/Call hold.
8.5 Service Announcements