The operator's perspective.
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Operator writing, sorted newest first.
What Answering Machine Detection is and what it does for your campaign
AMD listens to the first seconds of an answered call and decides human vs machine, so agents spend their time on live people instead of voicemail.
Why AMD Does Nothing in MANUAL and INBOUND_MAN Modes
Set everything up correctly and AMD still does nothing? If your dial method is MANUAL or INBOUND_MAN, detection never runs. Here is why and what to do.
Why VICIdial AMD Misses Machines and Sends Them to Agents
AMD false negatives push answering machines straight to your agents. Here is why VICIdial misses machines and how to tighten detection to catch them.
Reading the AMD Log Report to See What AMD Actually Decided
The AMD Log Report shows the result detection returned on every call. Here is how to read it and use it to tune VICIdial answering machine detection.
AM Message Wildcards: A Different Voicemail Per Lead
AM Message Wildcards let VICIdial play a different answering-machine message based on a value in the lead record. Here is how to turn it on and use it.
VICIdial AMD Type: Built-in AMD vs Third-Party Engines
The AMD Type setting picks which detection engine routes your answered calls. Learn when to keep built-in AMD and when a third-party engine fits.
VICIdial AMD: Hang Up the Machine or Leave a Message
Detected a machine? You can drop the call instantly or play a voicemail. Here is how to choose the AMD outcome and configure each path.
How to Leave a Pre-Recorded Voicemail on Answering Machines
Set AMD send to vm exten to Y and point the Answering Machine Message field at a recorded prompt to leave a clean voicemail on every detected machine.
The VICIdial Voicemail Message Daily Limit and Why You Cap It
The Voicemail Message Daily Limit stops the same lead from getting your message over and over in one day. Here is how the cap works and when to use it.
The Hidden Cost of VICIdial AMD: Extra Time on Every Call
AMD adds processing time to every answered call, not just the machines. Here is what that costs you and when Dial Timeout is the smarter trade.
The KHOMP Settings Container: Per-Campaign KHOMP Options
How the KHOMP_SETTINGS container lets you apply one set of KHOMP detection options to a single campaign without touching the rest.
The KHOMP Quick Stats Report: Spotting a Slow Gateway
How the KHOMP Quick Stats Report compares today's processing against past days so you catch a slowing detection gateway early.
AMD vs a Longer Dial Timeout: Which Dodges Voicemails Best
Answering Machine Detection and a tuned Dial Timeout both cut voicemail pickups. Here is how to choose the right one for your outbound campaign.
When to turn on AMD and when to leave it off
Turn AMD on for high-machine-rate campaigns; for most, a 22-26 second dial timeout beats AMD's processing cost and false positives. Never on manual dialing.
The Two Dialplan Entries VICIdial AMD Needs
AMD relies on two extensions in your VICIdial dialplan: 8369 for detection and routing, and 8320 for playing a message. Here is what each line does.
How to connect SIPStation to VICIdial
Add a SIPStation by Sangoma SIP trunk to VICIdial using either IP authentication or registration, then verify the peer and place a test call.
Monitoring call quality on a carrier
Track MOS, jitter, packet loss, and latency on every carrier route, set thresholds, and have a plan to switch carriers before bad audio costs you conversions.
Throttling calls-per-second to protect your carrier
Practical pacing to stay under your carrier's CPS cap: lower the auto dial level, ease pacing, and spread call placement across trunks.
How to connect Plivo to VICIdial
Create a Plivo Zentrunk, choose IP-ACL or credential auth, then add the SIP carrier entry and dialplan in VICIdial.
How to connect Bandwidth to VICIdial
Bandwidth trunks authenticate by IP. Whitelist your VICIdial server, add the SIP carrier entry, and route DIDs into an in-group.
How to connect Telnyx to VICIdial
Set up a Telnyx SIP Connection with IP or credential auth, then add the matching SIP carrier and dialplan in VICIdial.
How to connect Twilio to VICIdial
Connect a Twilio Elastic SIP Trunk to VICIdial: grab the SIP domain, whitelist your server IP, then add a SIP carrier and dialplan.
Getting your numbers unblocked when carriers flag them
How outbound numbers get blocked or flagged, the remediation and registration paths to clear them, and how to keep watching your reputation afterward.
Avoiding "Spam Likely" labels on your outbound calls
What triggers a Spam Likely flag on VICIdial outbound calls and the practical fixes - number rotation, attestation, registration, and lower volume per DID.