Master VOS3000 IVR custom ringback tone (CRBT) configuration. Upload custom audio, assign per-phone CRBT, and understand how ringback interacts with 183 SDP and early media.
VOS3000 Auxiliary Ring Tone Flexible Activation Delay Easy Configuration
Configure VOS3000 auxiliary ring tone with flexible activation delay. Set custom ringback tone timing per gateway for optimal caller experience per Manual 2.5.1.1.