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