A phone-based system replaces the booths, interpreter consoles, transmitters and receivers of traditional simultaneous interpretation with a laptop, an audio interface and the phones guests already carry. That saves floor space, build time and the work of handing out and collecting receivers. Booths and receivers are still the right choice when you need human interpreters, when the venue’s mobile signal and Wi-Fi cannot be relied on, or when phones are not allowed in the room. Sim Trans rents both, so this comparison is not a sales pitch for one side.
Below we set out what each option involves on the day, what drives the cost, and which events suit which set-up.
What a traditional booth set-up involves
A conventional simultaneous interpretation set-up has five parts.
- Soundproof booths, one per language, insulated so interpreters can hear the floor clearly and the room cannot hear them. They usually sit at the back or side of the hall, with a clear view of the stage and screens.
- Interpreter consoles inside each booth, so the interpreters can listen to the floor, switch microphones and take relay from another booth when needed.
- A distribution system, usually infrared or radio, with transmitters and radiators placed so that every seat receives a clean signal.
- Receivers and headsets for every guest who needs interpretation, with chargers, spare batteries and hygiene covers.
- Technicians to install, test and run the system, and staff at a desk to issue receivers, often against an ID or a signature, and collect them at the end.
Most important of all, booths house human interpreters, who usually work in pairs and take turns. That is what the equipment is for.
Set-up and timing
Booths and transmitters are usually installed the day before the event or early on the morning of it, after the stage and AV are in place. Cabling has to run from the AV desk to the booths, and radiators have to be positioned and tested across the room. At the end, everything has to be packed down, and receivers counted back in.
Logistics guests notice
Guests queue to collect a receiver, choose a channel number, wear a headset for the session and return the receiver at the end. At a large conference in Dubai, receiver distribution can need its own desk and staff at every entrance, and lost or unreturned receivers are a familiar headache.
What a phone-based set-up involves
With AI interpretation on guests’ phones, the equipment list is short.
- On our side: a laptop and an audio interface, with XLR and USB cables. We connect to the audio system the venue already has and work from one discreet position at the side of the room.
- On the guests’ side: their own phone and earbuds. They scan a QR code on a table card, badge or screen, choose their language from a list shown in each language’s own script, and listen. No app, no account, no sign-up.
- On the organiser’s side: printed QR cards or a slide, which we design with you, and a clean audio feed from the venue’s mixing desk.
Set-up and timing
We set up in minutes. The longest part of the day is the sound check with the venue’s AV team and testing every language channel on real phones before the doors open. Our team then monitors every language channel live throughout the session. Nothing needs to be packed down except a laptop and an interface, and there is nothing to count back in.
Logistics guests notice
Very little. Guests scan and listen. They can choose audio and captions, or captions only, and switch to “Show original” if they want the speaker’s own words. Languages can be added during a live session, so a late request on the day is a setting, not a new booth. The full journey is on our how it works page.
Side-by-side comparison
| Booths and receivers | Phone-based system (SIM.AI) | |
|---|---|---|
| Who interprets | Human interpreters, usually in pairs per language | AI interpretation (speech recognition, machine translation and synthetic voice); human interpreters can be added in a hybrid set-up |
| Equipment in the room | Booths, consoles, transmitters, radiators, receivers, headsets | A laptop and an audio interface |
| What guests use | A receiver and headset handed out on arrival | Their own phone and earbuds |
| Floor space | Space for each booth at the back or side, with sight lines to the stage | One small position at the side of the room |
| Set-up | Usually the day before or early on the day; cabling and coverage testing | Minutes, plus a sound check with the venue AV team |
| Adding a language | Another booth, more interpreters and a new channel, booked in advance | A setting; can be added during a live session |
| Number of languages | Limited by booths, interpreters and channels available | 81 available, up to 12 at the same time |
| Distribution staff | A desk to issue and collect receivers | None; guests scan a QR code |
| Connectivity needed | None for guests; the system is self-contained | Mobile connection or venue Wi-Fi for guests |
| Captions | Not part of the system | Live captions with “Show original” |
| Records afterwards | Floor and booth audio if recorded | Recordings of every language channel, transcripts (.docx and .xlsx), subtitle files, usage report |
| Nuance, humour, unclear audio | Strong, in the hands of a skilled interpreter | Can contain errors with names, accents, idiom, humour and poor audio |
What drives the cost
We do not publish prices in articles, because the right figure depends on the programme. What we can do is show what moves the number in each case. For current details on how SIM.AI is quoted, see our pricing page.
Booths and receivers
- Number of languages. Each language usually means a booth, a team of interpreters and a channel.
- Number of days and sessions. Interpreters, technicians and equipment are booked by the day.
- Audience size. Every listener needs a receiver and headset, plus spares.
- Room size and layout. Large or irregular halls need more radiators to cover every seat.
- Build and transport. Delivery, installation, the build day and pack-down.
- Staffing. Technicians on site throughout, and staff to run the receiver desk.
- Specialist subject matter. Legal, medical and technical sessions call for interpreters with that experience.
Phone-based system
- Number of language channels running at the same time.
- Number of days and sessions, and how long each runs.
- Preparation: building the glossary, and whether Precision mode is needed for legal, government or technical sessions.
- Hybrid elements: any sessions that still need human interpreters.
What drops out entirely is the per-guest hardware. Whether you have fifty listeners or five hundred, nobody needs a receiver, so audience size stops being an equipment question.
When booths and receivers are the better choice
Be honest with yourself about these situations.
- You need human interpreters. Legally binding proceedings, sensitive negotiations, medical consent and VIP protocol occasions where every word matters. Sim Trans provides human simultaneous interpretation in Dubai and across the UAE, with booths and receivers through its interpretation equipment rental.
- Connectivity is weak. A basement hall, a remote desert venue or an exhibition centre where thousands of visitors share the same network. Guests need a mobile connection or venue Wi-Fi for a phone-based system. Check this early.
- Phones are not allowed. Some government and security-sensitive rooms ask guests to leave phones outside.
- The audience may not carry smartphones or earbuds. Some community and older audiences will be better served by a receiver handed to them.
- The venue has an installed system you want to use. Output from AI interpretation to conference systems such as Bosch DICENTIS, Integrus infrared and Dante networks is coming soon. Until then, AI channels reach guests through their phones.
When a phone-based system makes more sense
- No room for booths. A hotel ballroom set for a gala, where booths would take tables and spoil the sight lines.
- Many languages, smaller groups. A ministry town hall in Abu Dhabi where staff want Arabic, English, Hindi, Urdu, Malayalam and Filipino. Six booths for small groups is hard to justify; six AI channels is a setting. See our page on Hindi interpretation for one of the languages UAE audiences ask for most.
- Quick turnarounds. A room that changes from a breakfast briefing to a panel within the hour.
- Records matter. Transcripts per language for minutes, and subtitle files for the event video, come as standard. Our transcripts and records page explains what you receive.
- Unpredictable language mix. Walk-in audiences at a community event or an exhibition seminar, where you do not know in advance who will need what.
Mixing the two
Many events do not need to pick one. A medical congress in Dubai might run human interpreters in booths for Arabic and English in the main auditorium, with AI channels on guests’ phones for French and Russian, and captions only in the workshop rooms. Because Sim Trans rents the equipment, provides human interpreters and runs SIM.AI, one team plans the whole thing. Our page on combining AI and human interpreters shows how.
If you are still weighing AI against human interpretation more broadly, the decision checklist for organisers works through it session by session, and our SIM.AI vs traditional booths comparison gives the summary view.
Next step
Send us your venue, programme and language list, and we will tell you honestly which sessions suit booths, which suit phones, and which need both. Book a demo to hear a phone-based session in your own languages before you decide.