Glossary · MOH

What is music on hold?

Music on hold (MOH) is the audio played to callers while they wait — on hold, in a call queue, or in a park slot. Its job is simple: prove the line is still alive. Dead silence makes callers hang up within seconds, assuming the call dropped.

The modern version is as much message on hold as music: announcements, wait-time estimates, queue position, and answers to common questions, layered over the audio bed.

How music on hold works

On legacy PBX hardware, MOH was literally an audio input — businesses wired a radio or CD player into the phone system. On cloud platforms it is uploaded or selected audio applied per queue, per department, or system-wide:

A caller is placed on hold or enters a queue.
The platform streams the configured audio to that caller.
Periodic message inserts (every 30–60 seconds is typical) break the loop: position updates, callback offers, or informational announcements.
Audio stops the instant an agent connects.

The licensing trap

Playing copyrighted music to callers on hold is a public performance under US copyright law — your personal Spotify/Apple Music subscription does not cover it, and radio-on-hold has been the subject of real infringement actions. Compliant options:

Platform-provided audio — cloud phone vendors include licensed or royalty-free hold music; using it is the zero-effort safe path.
Royalty-free / licensed libraries — purchase business-use tracks outright.
Commissioned or original audio — own the recording, no ongoing rights issues.
PRO licenses (ASCAP/BMI/SESAC) — required if you insist on commercial music; usually more cost and admin than the alternatives justify.

Making hold time work for you

Set expectations — queue position and estimated wait measurably reduce abandonment versus silence-plus-music alone.
Offer the exit — a callback option (“press 1 to keep your place and get a call back”) converts the most frustrated segment.
Say something useful — hours, portal URLs, seasonal notices; answers given on hold are calls shortened.
Match the brand — a law firm and a skate shop should not sound the same on hold.
Audit quarterly — stale promotions on hold (“our 2024 holiday special!”) quietly broadcast neglect.

The better play is reducing hold time itself: an AI receptionist absorbs the routine calls so fewer humans queue at all.

Common questions

Can I legally play Spotify or the radio on hold?

No — consumer streaming subscriptions and radio rebroadcast to callers are public performance of copyrighted work without the right license. Use your platform’s included hold audio, royalty-free tracks, or properly licensed music. The safe default on DialPhone: included hold music, or upload audio you own the rights to.

What audio format does music on hold need?

Cloud platforms accept common formats (WAV/MP3) and transcode internally; classic telephony ultimately delivers in 8 kHz mono, so heavily produced tracks lose fidelity. Choose audio that survives narrowband: simple instrumentation and clear voiceover beat dense mixes.

Should hold audio be music or messages?

Both, alternated. Music alone wastes attention; messages alone irritate on loop. The common pattern — 30–60 seconds of music between short informational inserts — keeps callers oriented without nagging. Lead with the highest-value insert: callback offer or expected wait.

Does hold music actually affect customer satisfaction?

Hold experience does. Callers tolerate known, bounded waits far better than silent or uninformed ones — clear expectations and callback options consistently improve CSAT and cut abandonment. The audio itself matters less than the information layered on it.

See DialPhone queueing

Contact center → · Call queue → · Pricing →

Call queue — where most hold time happens
Call park — the other place callers hear MOH
Auto attendant — the audio experience before the queue
CSAT — measuring whether wait experience hurts you