# What is PDD (Post-Dial Delay)?

> PDD (Post-Dial Delay) is the time between the moment a call is initiated — a caller finishing dialing, or a system placing a call — and the moment ringing is heard or the call connects. High PDD, usually caused by long signaling paths or route-hunting across multiple carriers, makes callers hang up before connection and is a classic symptom of low-quality wholesale voice routes. See /answers/what-is-asr, /answers/what-is-acd, and /tools/erlang-calculator.

- Canonical URL: https://www.broadnet.me/answers/what-is-pdd
- Language: en
- Last reviewed: 2026-07-22
- Publisher: BroadNet (https://www.broadnet.me)

## Related

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