Tag: SIP signaling
Learn how VoIP codec negotiation works, why calls fail with 488 errors, and how to configure SDP offers for optimal audio quality and bandwidth efficiency.
Learn how SDP codec negotiation works in VoIP calls. Understand the Offer/Answer model, payload types, and troubleshooting tips for SIP and RTP.
SIP proxies and B2BUAs handle VoIP calls differently-one relays signals, the other controls them. Learn how each works, when to use them, and why most businesses choose B2BUAs despite the added complexity.
The SDP Offer/Answer model is the backbone of VoIP call setup, letting devices agree on codecs, ports, and media settings. Learn how it works, why it's reliable, and what breaks it.
Post-dial delay in VoIP can cause callers to hang up before a ring even starts. Learn how to tell if it's caused by signaling problems or media delays-and how to fix each one for better call success rates.
