VoIP troubleshooting quick map
Recall the fastest distinctions for VoIP troubleshooting across layers, signaling, and media.
Layer map A phone has no link light after a desk move. What is the first layer family? Think before IP. Physical or data-link evidence comes first. Check patching, switch port, power, VLAN profile, and link status before SIP or carrier escalation. Signaling vs media SIP succeeds but audio is one-way. Which plane should you inspect next? SIP can set up a session while RTP media still fails. Common trap The call connected, so the network path must be fine. Use when someone treats answer state as proof of audio path. Your line Connected proves enough signaling to answer. It…
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