On-Site Interpreting Services
Some conversations cannot be handled down a phone line. Ad Astra places certified, background-checked interpreters in the room, for courtrooms, hospitals, conferences, and emergencies.
What is on-site interpreting?
On-site interpreting, also called in-person interpreting, places a qualified interpreter physically in the room with the people who need to understand each other. It is the format of choice for legal, government, and medical settings where physical presence is required, where documents are handled, or where the stakes make remote interpreting inappropriate.
Ad Astra can perform interpretation services on site or virtually. We have successfully provided on-site interpreting from Montreal, Longueuil, Toronto, and Vancouver to Washington D.C., New York, Miami, and Los Angeles.
Where physical presence changes the outcome
Courtrooms and legal proceedings
A courtroom interpreter ensures that a defendant who does not speak English fully understands the proceedings, preserving their rights and fair trial access.
Medical appointments and procedures
In-person interpreting for consultations, procedures, and consent conversations where a clinician needs the interpreter in the room.
Conferences and large events
Simultaneous interpreting with equipment, or consecutive interpreting for smaller sessions and side meetings.
ASL and accessibility compliance
Specialized support for American Sign Language interpretation and accessibility obligations, including Certified Deaf Interpreters.
Emergency and urgent situations
Urgent requests supported alongside scheduled appointments when something cannot wait.
Government and community services
Benefits offices, social services, housing programs, and public meetings that serve multilingual communities.
Vetted for the room they are walking into
Every on-site interpreter is background-checked and certified, and assignments are matched to the setting: courtroom, healthcare, or corporate. Our interpreters are compliant with courtroom, healthcare, and corporate regulations, and are available for both scheduled appointments and urgent requests.
When assigning a sign language interpreter to a Deaf student or patient, there are a variety of variables to consider such as cultural and linguistic competency and subject matter expertise. You always want to make sure the assigned ASL interpreter is the best possible fit. Our ASL work is guided by our internal Deaf Leadership team, and we consult with the Deaf community to make sure our practices and approach are in line with their needs.
Consecutive or simultaneous, matched to the setting
Both consecutive and simultaneous interpretation can be provided on site as well as remotely. The right mode depends on the size of the room and the pace of the conversation.
Consecutive
The interpreter listens, then conveys what was said. There is time and space to think, pause, and clarify, which suits interviews, appointments, and negotiations.
Simultaneous
The interpreter conveys meaning in real time while the speaker continues, which suits conferences and large events and usually needs equipment.
Sign language
ASL and BSL interpreters, including Certified Deaf Interpreters paired with hearing interpreters for greater trust and clarity.
Schedule on-site assignments and see them all in one place
AdAstraConnect lets your team request in-person interpreters, track confirmations and cancellations, and roll on-site work into the same reporting as your phone and video sessions.
- Request in-person interpreters for any location
- Upload documents, case details, and arrival instructions
- Track confirmations, cancellations, and session notes
- Digital verification of services replaces paper time sheets
- Combine on-site with OPI and VRI in one unified report

How we qualify every interpreter
There is little margin for error in interpreting, so every Ad Astra interpreter clears a five-stage screening process before taking a single assignment.
Verified command of both languages, in and out.
Certifications and professional credentials confirmed.
Identity verified, with background checks for on-site work.
Digital competency checks on the tools used in session.
Camera framing, sound quality, and internet speed assessed.
Built for regulated environments
Ad Astra interpretation follows strict federal and industry regulations, ensuring safe and reliable communication across every environment we support.
Not sure this is the right fit?
Ad Astra delivers interpretation four ways. Compare them on the interpretation services overview.
Frequently asked questions
On-site interpreting, also called in-person interpreting, places a qualified interpreter physically in the room. It is used for legal, government, and medical settings where physical presence is required.
Choose on-site when physical presence matters: courtroom proceedings, medical procedures, conferences with equipment, sessions involving documents, and situations where a remote connection would undermine trust or accuracy.
For common languages, we recommend booking at least 48 to 72 hours in advance. For rare languages or specialized subject matter, please provide 1 week notice. We also support same-day and emergency requests.
Yes. On-site interpreters are background-checked and certified, and are matched to assignments by subject matter, whether courtroom, healthcare, or corporate.
Yes. We provide American Sign Language interpreters on site, guided by our internal Deaf Leadership team, including Certified Deaf Interpreters paired with hearing interpreters where that produces better communication.
We provide on-site interpreting across the United States and Canada. We have successfully covered assignments from Montreal, Longueuil, Toronto, and Vancouver to Washington D.C., New York, Miami, and Los Angeles.
Consecutive interpreting has the speaker pause so the interpreter can convey each passage, which allows time to think, pause, and clarify. Simultaneous interpreting happens in real time while the speaker continues, and is typically used at conferences and large events.
Yes. On-site interpreters are available for scheduled appointments and urgent requests, subject to language and location.
Book interpreters for your next session
Send us the date, platform, languages, and subject matter, and we will match the right interpreters.
- A response within 10 minutes during business hours
- Pricing built for your volume, not a generic rate card
- A dedicated client success manager and project manager
- Answers on HIPAA, Title VI, ADA, and integration requirements
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