Deaf Services Unlimited is about connecting people. Facilitating communication between deaf people and hearing people is our business. We understand you want the process to be hassle-free and uncomplicated. Scheduling an interpreter through DSU is as simple as making one call. And while our innovation takes customer-based sign language interpreting to the next level, we do it without compromising our dedication to service and our strong commitment to quality. General Information Sign language interpreters can be scheduled either by phone or via our web site. Interpreting services are available 24 hours a day, 7 days a week, 365 days a year. We offer competitive rates and have a nationwide network of certified interpreters.